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 > Drivers, Test-load, Power Supply, & Batteries



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



Reply
 
LinkBack Thread Tools Display Modes
Old 08-08-2010, 03:21 PM #1
SHIN's Avatar
Class 1M Laser
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
SHIN SHIN is offline
Class 1M Laser
SHIN's Avatar
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
Default Question about amc7135 and 445nm LD..

Hi.

I built a few of 445nm with v5, microboost.
But maximum current of v5 to 445nm is 1.2A and microboost is 1.1A.
So I am looking for high current driver.

I have my custom P60 heatsink already, so I can use round circuit board for LED.
Drop-in laser module - P60

Dealextreme's cheap 4x amc7135 driver can supply 1.4A, and 5x can 1.75A.
Input voltage of amc7135 ranges upto 6V-7V.
Vf of 445nm LD is over 4.2V.
And drop-out voltage of 1N54xx diode(3A) is 0.8V-0.9V.

I have question:
Can I build 1.4A/1.75A 445nm
with 4x/5x amc7135 driver
and 2 of serial Li-ion battery(8.4V)
and 3 of 1N54xx(ca. 2.5V drop) for voltage drop of batteries ??

I hope this will be possible.. Any comment welcome...

SHIN
Attached Files
File Type: pdf 1N5400.pdf (140.0 KB, 141 views)
File Type: pdf amc7135.pdf (181.6 KB, 609 views)


__________________
DIY pen - LOC 260mW(420mA), BH08 370mW(308mA), Green 130mW
DIY P60 - LOC 320mW(450mA), BDR205 730mW(510mA), 808nm 1.3W(1750mA), A140 1.9W(1.8A), Green 210mW
LPM - Kenometer Lite

Last edited by SHIN; 08-08-2010 at 03:36 PM.
SHIN is offline   Reply With Quote







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







Old 08-09-2010, 07:21 AM #2
SHIN's Avatar
Class 1M Laser
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
SHIN SHIN is offline
Class 1M Laser
SHIN's Avatar
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
Default Re: Question about amc7135 and 445nm LD..

__________________
DIY pen - LOC 260mW(420mA), BH08 370mW(308mA), Green 130mW
DIY P60 - LOC 320mW(450mA), BDR205 730mW(510mA), 808nm 1.3W(1750mA), A140 1.9W(1.8A), Green 210mW
LPM - Kenometer Lite
SHIN is offline   Reply With Quote
Old 08-09-2010, 03:06 PM #3
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: Question about amc7135 and 445nm LD..

Try it out with a test load. A PoIV graph is now available in the 445 forum 3x 445nm LD PIV Plot

I don't see why it shouldn't work, but it can't hurt to test. I'm sure you have a few unknown bin Cree LEDs you could test with... I think I understand what you plan on doing: put a few diodes on the Vcc pin to drop the voltage to the chips w/o dropping the voltage to the LD. That's a pretty common hack for running multiple LED emitters off of a 7135, using LEDs instead of normal ones.
Poorman Mutli-Lux setup method - CandlePowerForums

The main modification would be that you probably only want to drop the Vcc but not the LD's Vin, so you would add the diodes between Vin on the driver board and the paralleled Vcc pins on the 7135, where in Download's example the extra diodes (LEDs) are dropping volts from the Vcc and from the third LED's supply.

BTW, I'm having a P60 heatsink made for my L2, pretty excited. I was just curious if you had any surefires and if the sinks you made for your L2 fit your surefire?
BShanahan14rulz is offline   Reply With Quote
Old 08-10-2010, 02:17 AM #4
SHIN's Avatar
Class 1M Laser
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
SHIN SHIN is offline
Class 1M Laser
SHIN's Avatar
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
Default Re: Question about amc7135 and 445nm LD..

Hi. BShanahan14rulz.

Thank you.

I'll try like this:

445nmLD===7135driver---1n54xx-1n54xx-1n54xx-----Li-ion--Li-ion-----tail switch
<---------------- P60 module -------------------> <---battery--->

My P60 heatsinks were made after surefire-compatible P60. (nailbender@CPF, dealextreme etc)
Each and every diameter and length was measured.
I have surefire L4, E1L and non-surefire P60 hosts but no surefire P60 host.
I think those will fit any P60-compatible host including surefire.

SHIN
__________________
DIY pen - LOC 260mW(420mA), BH08 370mW(308mA), Green 130mW
DIY P60 - LOC 320mW(450mA), BDR205 730mW(510mA), 808nm 1.3W(1750mA), A140 1.9W(1.8A), Green 210mW
LPM - Kenometer Lite
SHIN is offline   Reply With Quote
Old 08-10-2010, 04:08 PM #5
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: Question about amc7135 and 445nm LD..

Just to clarify, this is what I was thinking:


But with a test load and not a real laser diode. I took the Vf of the 1n5400 diodes from the datasheet graph, assuming ~1A. At 2A it's about 0.85V.

I don't know if the regulator needs to compare the Vin to the V after the LED, it shouldn't have to. If it does, though, I bet it would cause some annoying malfunctions.

Anyways, give it a shot with a test load, the load should drop about 4.5-4.6V if you want to be precise. throw in a very low resistance high power resistor to measure the current, etc. etc., you know the story.
BShanahan14rulz is offline   Reply With Quote
Old 08-11-2010, 03:27 AM #6
SHIN's Avatar
Class 1M Laser
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
SHIN SHIN is offline
Class 1M Laser
SHIN's Avatar
 
Join Date: Jul 2009
Location: Seoul
Posts: 207
Rep Power: 12
SHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the roughSHIN is a jewel in the rough
Default Re: Question about amc7135 and 445nm LD..

Thank you for the diagram. BShanahan14rulz.

I tested with my custom 2A/3A test load and it seemed to work fine.
445nm LDs are on its way.
I'll post the picture if this is successful.

Again I appreciate you.

SHIN
__________________
DIY pen - LOC 260mW(420mA), BH08 370mW(308mA), Green 130mW
DIY P60 - LOC 320mW(450mA), BDR205 730mW(510mA), 808nm 1.3W(1750mA), A140 1.9W(1.8A), Green 210mW
LPM - Kenometer Lite
SHIN is offline   Reply With Quote
Old 09-16-2010, 05:52 AM #7
gillza's Avatar
Class 2M Laser
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
gillza gillza is offline
Class 2M Laser
gillza's Avatar
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
Default Re: Question about amc7135 and 445nm LD..

Quote:
Originally Posted by BShanahan14rulz View Post
Just to clarify, this is what I was thinking:


But with a test load and not a real laser diode. I took the Vf of the 1n5400 diodes from the datasheet graph, assuming ~1A. At 2A it's about 0.85V.

I don't know if the regulator needs to compare the Vin to the V after the LED, it shouldn't have to. If it does, though, I bet it would cause some annoying malfunctions.

Anyways, give it a shot with a test load, the load should drop about 4.5-4.6V if you want to be precise. throw in a very low resistance high power resistor to measure the current, etc. etc., you know the story.
Please correct the nOOb if I'm wrong as I'm trying to understand how AMC7135 functions: from what I read I gather that the purpose of the Vdd is to measure the potential at that point (at Vdd) and to adjust potential at OUT in such a way that the Voltage drop across the diode will be the Vf of the diode? And in this case the voltage dropped only at Vdd to meet the chip's maximum Operating voltage while keeping it high at Diode's positive terminal so that there will be "room" for Voltage drop?
__________________
Never knows best

My lasers:

405nm : PHR-803t in Dorcy Jr. Old Style with Ehgemus heatsink: 102mW
405nm : Bluray in SAIK SA-305 at 745ma: 980mW
445nm : Guidesman Dual E-Drive: 1.6W
650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

List of 12x 405nm 5.6mm diode builds

Last edited by gillza; 09-16-2010 at 06:00 AM.
gillza is offline   Reply With Quote
Old 09-16-2010, 03:53 PM #8
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: Question about amc7135 and 445nm LD..

Quote:
Originally Posted by gillza View Post
Please correct the nOOb if I'm wrong as I'm trying to understand how AMC7135 functions: from what I read I gather that the purpose of the Vdd is to measure the potential at that point (at Vdd) and to adjust potential at OUT in such a way that the Voltage drop across the diode will be the Vf of the diode? And in this case the voltage dropped only at Vdd to meet the chip's maximum Operating voltage while keeping it high at Diode's positive terminal so that there will be "room" for Voltage drop?

You may be onto something here. Perhaps this would only be usable if the AMC7135 are well heatsinked or the diodes also drop the voltage to the LD, I.E. the diodes trop the main supply voltage. It looks like the AMC senses the voltage before the load and tries to compensate how much V it drops to keep the current near 350mA. I guess when I have some time I ought to do some testing, now that I have more AMC's. It only seems to take a reference on the Vcc pin, according to the datasheet, though. Not sure why.

Last edited by BShanahan14rulz; 09-16-2010 at 03:57 PM.
BShanahan14rulz is offline   Reply With Quote
Old 09-16-2010, 09:49 PM #9
gillza's Avatar
Class 2M Laser
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
gillza gillza is offline
Class 2M Laser
gillza's Avatar
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
Default Re: Question about amc7135 and 445nm LD..

Quote:
Originally Posted by BShanahan14rulz View Post
You may be onto something here. Perhaps this would only be usable if the AMC7135 are well heatsinked or the diodes also drop the voltage to the LD, I.E. the diodes trop the main supply voltage. It looks like the AMC senses the voltage before the load and tries to compensate how much V it drops to keep the current near 350mA. I guess when I have some time I ought to do some testing, now that I have more AMC's. It only seems to take a reference on the Vcc pin, according to the datasheet, though. Not sure why.

Vcc is Vdd? I guess it makes sense assuming that amc7135 measures the potential difference at Vdd relative to GND, and adjusts potential at OUT (again relative to GND) so that the voltage drop across the diode is its Vf (forward voltage) necessary to maintain 350mA output.

Unless I'm completely talking out of my A$$ here the LD diode functions more or less like a one way resistor, so following the Ohms law, assuming that LD's resistance is constant, in order to push certain current through it voltage accross the LD needs to be changed (to maintain Ohms law), and that is what AMC7135 does.

Now keep in mind I'm in no way electrical engineer, my background is in chemistry and biochemistry, so I may be completely wrong!!! I'm here to try to understand it
__________________
Never knows best

My lasers:

405nm : PHR-803t in Dorcy Jr. Old Style with Ehgemus heatsink: 102mW
405nm : Bluray in SAIK SA-305 at 745ma: 980mW
445nm : Guidesman Dual E-Drive: 1.6W
650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

List of 12x 405nm 5.6mm diode builds
gillza is offline   Reply With Quote
Old 09-17-2010, 05:40 PM #10
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: Question about amc7135 and 445nm LD..

[evil voice] I think you might be asking questions that are better left alone

But on a more serious note, I'm not exactly sure of the voodoo that goes on inside the chip, and the datasheets are very very generic. I AM thinking that it senses the voltage on the OUT pin as well, even though it's not indicated in the logic diagram on the datasheets, because on the newer versions it's recommended to add an output capacitor to ground if the length of the wire between the OUT pin and the load is longer than 3cm, or on a different board. Usually, these short length requirements are indicative of some sensitive comparator thingamabobs in there.

So I can say that what you think sounds more or less like what's going on, but I can't reply back to you for certain that that is what it is doing. If you are really curious, I might suggestyou ask at CPF if anybody knows how exactly they work. All I know is that it sinks 350mA through the out pin, and if Vf+.15V>Vbatt, then it pretty much direct-drives it with no current limiting (which wouldn't matter because your current wouldn't go higher than .35 anyways at that low supply voltage)
BShanahan14rulz is offline   Reply With Quote
Old 09-17-2010, 06:41 PM #11
gillza's Avatar
Class 2M Laser
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
gillza gillza is offline
Class 2M Laser
gillza's Avatar
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
Default Re: Question about amc7135 and 445nm LD..

Quote:
Originally Posted by BShanahan14rulz View Post
.....All I know is that it sinks 350mA through the out pin, and if Vf+.15V>Vbatt, then it pretty much direct-drives it with no current limiting (which wouldn't matter because your current wouldn't go higher than .35 anyways at that low supply voltage)
Um so 0.15V is the dropout voltage of AMC7135?
__________________
Never knows best

My lasers:

405nm : PHR-803t in Dorcy Jr. Old Style with Ehgemus heatsink: 102mW
405nm : Bluray in SAIK SA-305 at 745ma: 980mW
445nm : Guidesman Dual E-Drive: 1.6W
650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

List of 12x 405nm 5.6mm diode builds
gillza is offline   Reply With Quote
Old 09-17-2010, 08:10 PM #12
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: Question about amc7135 and 445nm LD..

yep. As long as your LD/LED Vf+0.12V is less than the supply voltage, (and the supply voltage to the Vdd pin is within spec) the current will be regulated. It is more efficient the closer your battery voltage is to Vf+0.12V. Some people say it works ok when out of spec, as long as you heatsink them well.
BShanahan14rulz is offline   Reply With Quote
Old 09-17-2010, 08:17 PM #13
gillza's Avatar
Class 2M Laser
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
gillza gillza is offline
Class 2M Laser
gillza's Avatar
 
Join Date: Jul 2010
Location: Philadelphia, Pa
Posts: 598
Rep Power: 28
gillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant futuregillza has a brilliant future
Default Re: Question about amc7135 and 445nm LD..

Got it Thank you. This thread did shed some light on me and you Sir explained things splendidly Much appreciated!
__________________
Never knows best

My lasers:

405nm : PHR-803t in Dorcy Jr. Old Style with Ehgemus heatsink: 102mW
405nm : Bluray in SAIK SA-305 at 745ma: 980mW
445nm : Guidesman Dual E-Drive: 1.6W
650nm : LPC-815 @ 0.45A in Ehgemus Host Easy Build: 293mW

List of 12x 405nm 5.6mm diode builds
gillza 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 01:27 AM.


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