Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Science & Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 02-26-2011, 12:58 AM #1
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default 445nm connection problems and strange sound

Okay, later on I might try to record a video of what I am experiencing, I haven't posted video before though.

This is a little hard to explain but a very strange effect.

I have my bride of frankenstein build that is all DIY...
for lookin'at... Bride of Frankenstein

Now the battery connection is through twisting the end cap to make contact, as of late I have notice that it emits a quiet high pitched sound when "ON". This hasn't really bothered me and I still play with it from time to time, Even at the low power its running, at the focal it still burns.

Tonight I'm playing with it, the quiet high pitched sound is happening, I put it to a close focal, slide a match book in front and it begins to burn like usual, what I do notice is that the sound coming from the host begins to 'modulate'(sorry not sure how to explain), either way I would expect the sound to stay steady because of some battery connection trouble, but NEVER to change because the beam is breaking(burning carboard)!

I tried it a few times and get the same result, steady quiet high pitch sound, then when I break the beam at burning point, focal, the tone changes?

This is curious! Anyone lend some light on this I would be interested.
Thanks


Edit: just wanted to try it again to make sure i'm not posting something crazy..I though perhaps I was shaking it around in my hand. I put it down on a cloth and moved the matchbook back and forth and still had the same result. The sound is very faint, I may not be able to catch it on video, but it sounds almost like harmonics(my ear is trained more to music than science though)


__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)

Last edited by 532 with Envy; 02-26-2011 at 01:01 AM.
532 with Envy is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 02-26-2011, 01:10 AM #2
daguin's Avatar
Super Moderator
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
daguin daguin is offline
Super Moderator
daguin's Avatar
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

Try having someone else place the match into the beam while you look away (with your eyes closed) and listen without moving your head.

Peace,
dave
__________________
How To Get Along In and Be Accepted in the Forum

If you got some value out of reading this forum, how about donating $2 to keep it going?
Click Here to donate

Love all, trust a few, do wrong to none.
-William Shakespeare
daguin is offline   Reply With Quote
Old 02-26-2011, 01:31 AM #3
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

It could be my perception and an environmental condition, but it still seems like a reaction perhaps from reflections. Also it may not matter but I am using the matchbook and not match.

I ran it by my roommate, he heard the same sound change. I listened as an outside observer and the same. It only happens when the book hits the right spot, anywhere outside and the sound is steady.
__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)
532 with Envy is offline   Reply With Quote
Old 02-26-2011, 01:38 AM #4
daguin's Avatar
Super Moderator
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
daguin daguin is offline
Super Moderator
daguin's Avatar
 
Join Date: Mar 2008
Location: Sunny Southern California
Posts: 16,636
Rep Power: 1432
daguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond reputedaguin has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

My gut feeling is still observer movement/bias.

However,it may also be that you are hearing the sound "echo" off of the matchbook/hand/arm or that the position of the matchbook/hand/arm is changing the acoustics of the area.

Peace,
dave
__________________
How To Get Along In and Be Accepted in the Forum

If you got some value out of reading this forum, how about donating $2 to keep it going?
Click Here to donate

Love all, trust a few, do wrong to none.
-William Shakespeare
daguin is offline   Reply With Quote
Old 02-26-2011, 01:46 AM #5
GoRdOn_B's Avatar
Class 2M Laser
 
Join Date: Jul 2008
Location: Slut Lake
Posts: 663
Rep Power: 31
GoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant future
GoRdOn_B GoRdOn_B is offline
Class 2M Laser
GoRdOn_B's Avatar
 
Join Date: Jul 2008
Location: Slut Lake
Posts: 663
Rep Power: 31
GoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant future
Default Re: 445nm connection problems and strange sound

i have a phr build in a leadlight that makes a high pitched sound when i turn it on. i dont know what it is that makes it do that. but i do know what your talkin about
__________________
~Forget the Tv... I'd rather Hit the Streets & do Graffiti.
GoRdOn_B is offline   Reply With Quote
Old 02-26-2011, 01:53 AM #6
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

...@Dave..I understand what your saying, and that would hold true to the sound change coming at the focal point.
I did put it on the table and just move the book back and forth in attempts to eliminate a variable with the same results.
I should mention that the 'echo'/sound is in sync with the flashes of burning.(i'm not doing well explaining this..sometimes even the sublime is hard to put into words)

So, being said it may be a sound "echo", would it be the lights reflection that is creating the 'echo'?
__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)

Last edited by 532 with Envy; 02-26-2011 at 01:57 AM.
532 with Envy is offline   Reply With Quote
Old 02-26-2011, 01:56 AM #7
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

Quote:
Originally Posted by GoRdOn_B View Post
i have a phr build in a leadlight that makes a high pitched sound when i turn it on. i dont know what it is that makes it do that. but i do know what your talkin about
I think it's a loose battery connection of sorts, at least that's probably what it is in my case. My connection isn't really 'sound', but it works.
__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)
532 with Envy is offline   Reply With Quote
Old 02-26-2011, 02:11 AM #8
lazeerer's Avatar
Class 3B Laser
 
Join Date: May 2010
Location: CT
Posts: 3,664
Rep Power: 782
lazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond repute
lazeerer lazeerer is offline
Class 3B Laser
lazeerer's Avatar
 
Join Date: May 2010
Location: CT
Posts: 3,664
Rep Power: 782
lazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

I am almost certain that it is the protection circuit of the battery. I have also read somewhere but cant remember exactly that a high pitch noise usually comes from the inductor as well. But i dont know the explanation for it.

I have had this high pitched nose before coming from one of my protected 14500 cells when i was trying to suck to my juice out of it.

If you wish i can try to attempt it to make this sound and record a video and maybe this can help you hear what mine sounds like and compare it to your sound.

Iam not certain i can get it to make the sound i will have to hook it up.

Let me know.
__________________


405nm 1013mW In Cree Z5 , 850mW LaserGLow Electra Mod , 583mW C3 BDR
445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
488nm 52mW OPSL SAPPHIRE 488-50, 59mW SS Melles Griot BCD-50&BCD-25 35mW
515nm 83mW Direct Green Diode Fully Custom Host
532nm 617mW RPL Style , 213mW CNI-PGL-III-A , 120mW DIY SS C3
589nm 130mW CNI-PGL-III-A
594nm 13mW CNI-PGL-III-C
632nm 4mW HeNe
635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
SPECTROMETER - 390nm to 980nm



All My Reviews, Tips & Mods Are Here Now: >Reviews<


Check Out My YouTube Video's Here:
http://www.youtube.com/user/Lazereer
lazeerer is offline   Reply With Quote
Old 02-26-2011, 02:22 AM #9
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

Quote:
Originally Posted by lazeerer View Post
I am almost certain that it is the protection circuit of the battery. I have also read somewhere but cant remember exactly that a high pitch noise usually comes from the inductor as well. But i dont know the explanation for it.

I have had this high pitched nose before coming from one of my protected 14500 cells when i was trying to suck to my juice out of it.

If you wish i can try to attempt it to make this sound and record a video and maybe this can help you hear what mine sounds like and compare it to your sound.

Iam not certain i can get it to make the sound i will have to hook it up.

Let me know.
Thanks for the offer, I'm not really worried about the sound and probably won't fix it. The unit is running at pretty low power and that might explain it somewhat.
I was more interested in the sounds change at focal and I think that Dave and I have worked out at least a very plausible explanation. Aside from some strange feedback through the diode from the reflection(not even sure it that could happen) and environmental effect might be whats going on.
__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)

Last edited by 532 with Envy; 02-26-2011 at 02:25 AM.
532 with Envy is offline   Reply With Quote
Old 02-26-2011, 02:33 AM #10
lazeerer's Avatar
Class 3B Laser
 
Join Date: May 2010
Location: CT
Posts: 3,664
Rep Power: 782
lazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond repute
lazeerer lazeerer is offline
Class 3B Laser
lazeerer's Avatar
 
Join Date: May 2010
Location: CT
Posts: 3,664
Rep Power: 782
lazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond reputelazeerer has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

OK. I am glad you guys got it to a plausible explanation as i dont even know what to say on that part.

It is very strange.
__________________


405nm 1013mW In Cree Z5 , 850mW LaserGLow Electra Mod , 583mW C3 BDR
445nm 3.6W Monster Freak TEC 9mm, 3.1W Fat Boy Build , 2.9W Big Stainless , 2.7W Big Black, 2W Arctic G2 , 1.8W C13
473nm 178mW CNI-PGL-III-C , 56mW CNI-PGL-III-C
488nm 52mW OPSL SAPPHIRE 488-50, 59mW SS Melles Griot BCD-50&BCD-25 35mW
515nm 83mW Direct Green Diode Fully Custom Host
532nm 617mW RPL Style , 213mW CNI-PGL-III-A , 120mW DIY SS C3
589nm 130mW CNI-PGL-III-A
594nm 13mW CNI-PGL-III-C
632nm 4mW HeNe
635nm 1130mW Fenix TK35 ML501P73 , 918mW Small Sun ZY ML520G71
650nm 1056mW Polished CNI-PGL-C Mod, 5W Custom Build Red Devil
658nm 430mW LOC 826 Brinyte A20 , LCC 390mW C3 3 mode
660nm 500mW SS LQ ignis
671nm 800mW PowerModulem, 9mW Black Pen
685nm 44mW MXDL 2x AAA Pen, 41mW, 130mW Stainless Shadow
780nm 127mW Pen
808nm 758mW Fire Dragon From DJNY
LPM's 2W/5W Ophir
SPECTROMETER - 390nm to 980nm



All My Reviews, Tips & Mods Are Here Now: >Reviews<


Check Out My YouTube Video's Here:
http://www.youtube.com/user/Lazereer
lazeerer is offline   Reply With Quote
Old 03-03-2011, 06:44 PM #11
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

You're absolutely certain that the sound is coming from the actual laser and not the focal point? I see you've already ruled out that weird noise you sometimes "hear" if you looking at something bright...Hopefully it's not the laser diode chip acting as feedback and causing electrical characteristics to change in the diode. Most squeals come from inductors.

The only other alternative that I can think of is that when you have a laser focused like that and force something into the focal point, the chip weevils that are residing on that object create a high-pitched squealing as the focal point sterilizes the surface. Rest assured, these chip weevils cannot harm your laser if they aren't being sterilized, but it is very possible that the heat will make one of them jump towards your laser diode's chip.
BShanahan14rulz is offline   Reply With Quote
Old 03-03-2011, 07:25 PM #12
DTR's Avatar
DTR DTR is online now
Class 4 Laser
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
DTR DTR is online now
Class 4 Laser
DTR's Avatar
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

I am with 532. Normally when I hear a high pitch sound when turning a laser on it is from a weak connection point somewhere in the host. I would try bypassing the tailcap and see if that helps.
DTR is online now   Reply With Quote
Old 03-03-2011, 07:35 PM #13
RA_pierce's Avatar
Class 3B Laser
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
RA_pierce RA_pierce is online now
Class 3B Laser
RA_pierce's Avatar
 
Join Date: Sep 2007
Location: Southern California
Posts: 3,258
Rep Power: 3873
RA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond reputeRA_pierce has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

I've had a few Flex Drives make a high pitched "squeal." I diagnosed the problem as insufficient battery power and in another laser it was due to a poor solder joint at the - battery contact. The other time it was due to a crappy switch. When the laser would squeal it would drop in power and sometimes flicker.
So, in all these cases it was just something wrong with the electrical continuity.

Last edited by RA_pierce; 03-03-2011 at 07:37 PM.
RA_pierce is online now   Reply With Quote
Old 03-04-2011, 04:29 PM #14
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,440
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,440
Rep Power: 18210
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

Quote:
Originally Posted by daguin View Post
My gut feeling is still observer movement/bias.

However,it may also be that you are hearing the sound "echo" off of the matchbook/hand/arm or that the position of the matchbook/hand/arm is changing the acoustics of the area.
I doesn't have to be though. I've done some experiments with pulsed operation and burning, and in some rare instances i could hear the pwm frequency (that was in the kHz range) coming from the target. I suppose this is somehow caused by the material slightly cooling and heating up between the pulses.

I found it difficult to reproduce the effect though, but those experiments were all done with less powerful reds.


The whole situation is likely to be caused by a bad electrical connection, that produces a sound of its own (a spark on every time it disconnects). The frequency could be the same as that of the driver - those draw current in peaks too, resulting in variable load on the bad connection.
Benm is online now   Reply With Quote
Old 03-04-2011, 04:39 PM #15
chipdouglas's Avatar
Class 3B Laser
 
Join Date: Dec 2008
Location: Riverside, California
Posts: 4,011
Rep Power: 347
chipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond repute
Send a message via Yahoo to chipdouglas
chipdouglas chipdouglas is offline
Class 3B Laser
chipdouglas's Avatar
 
Join Date: Dec 2008
Location: Riverside, California
Posts: 4,011
Rep Power: 347
chipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond reputechipdouglas has a reputation beyond repute
Send a message via Yahoo to chipdouglas
Default Re: 445nm connection problems and strange sound

also i know this is far fetched. but are you running an inverter any where near where you are using your laser. they tend to hum quite loudly.

michael.
__________________
IN A CONSTANT STATE OF PICNIC

I AM THE STATUS QUO

ARE YOU A NEW MEMBER, OR EVEN MORE, ARE YOU NEW TO ONLINE FORUMS... READ THIS
LASER POINTER FORUM ETIQUETTE


for pot modding facts click below

http://laserpointerforums.com/f51/pot-modding-faqs-40510.html
chipdouglas is offline   Reply With Quote
Old 03-04-2011, 04:57 PM #16
532 with Envy's Avatar
Class 3R Laser
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
532 with Envy 532 with Envy is offline
Class 3R Laser
532 with Envy's Avatar
 
Join Date: Jun 2010
Location: Somewhere between Here and THere
Posts: 1,491
Rep Power: 576
532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute532 with Envy has a reputation beyond repute
Default Re: 445nm connection problems and strange sound

Quote:
Originally Posted by Benm View Post
I doesn't have to be though. I've done some experiments with pulsed operation and burning, and in some rare instances i could hear the pwm frequency (that was in the kHz range) coming from the target. I suppose this is somehow caused by the material slightly cooling and heating up between the pulses.

I found it difficult to reproduce the effect though, but those experiments were all done with less powerful reds.


The whole situation is likely to be caused by a bad electrical connection, that produces a sound of its own (a spark on every time it disconnects). The frequency could be the same as that of the driver - those draw current in peaks too, resulting in variable load on the bad connection.
It is an interesting phenomena, there has been much discussion of the bad electrical connection and i'm sure that is what is producing the high pitch sound(the build is very low budget)
The change in sound when I broke the beam at the right point is what really interested me.
I understand what Dave is saying and would agree with him in part, but my gut was telling me that it had something to do with the change in beam characteristics.....or something(i'm by no means a physics professor!).
It's been fun to see what people have to say about it, i'm afraid that the sound and it's change from what i'm hearing is so faint it would be hard to capture it on video. I did run it by a roommate and he heard the same change when the beam hit the burning point.
Perhaps this weekend I will "Try" to capture it and share it here.
__________________
_______________________________________________

337.1nm Home Built TEA Laser
HeNe lasers a'plenty.Plus that nice one in the avatar
594nm Melles Griot HeNe
594nm Trius Engineering HeNe
405nm handhelds (diy)
445nm handhelds (diy)
473nm B&W Tek lab style
488nm.40mW Multi-Line Argon Ion laser.....(with thanks to Dave)
515nm Argon Ion laser 40mW
532nm lab style 100mW+handhelds (diy)
543nm Melles Griot HeNe
674nm lab style..500mW
808nm 40W FAP diode array
Kimmon IK4123R-B Helium-Cadmium laser and matching power supply.(with great thanks to Event_Horizon!)(Non-working head...PM me if you have one or information)
532 with Envy is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 01:09 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC