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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 04-20-2008, 01:20 AM #1
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
nvmextc nvmextc is offline
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
Default help buying multimeter

I currently have this multimeter http://www.dse.com.au/cgi-bin/dse.st...uct/View/Q1456
but cannot get any ma readings when I test DDL's circuit after following the instructions I've read on here.

Would 1 of these multimeter's be more suited for the circuit?
http://www.dse.com.au/cgi-bin/dse.st...uct/View/Q4139
http://www.dse.com.au/cgi-bin/dse.st...uct/View/Q1467


nvmextc is offline   Reply With Quote







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







Old 04-20-2008, 02:08 AM #2
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
chido chido is offline
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
Default Re: help buying multimeter

Your current multimeter should be fine. Are you sure you're properly testing the circuit? What do you mean you don't get any readings? Do numbers show up at all????
chido is offline   Reply With Quote
Old 04-20-2008, 02:22 AM #3
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
nvmextc nvmextc is offline
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
Default Re: help buying multimeter

I'm following the instructions in this thread: http://www.laserpointerforums.com/fo...num=1197651171
I know the circuit already works, I just can't work out the ma, sometimes numbers will flash up for a second but thats it. I can get both the voltages. Does it matter that I am using IN4004 diodes?
nvmextc is offline   Reply With Quote
Old 04-20-2008, 02:28 AM #4
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
chido chido is offline
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
Default Re: help buying multimeter

Using 1N4004 diodes shouldn't matter. Have you tried testing it with the actual LD?
chido is offline   Reply With Quote
Old 04-20-2008, 02:32 AM #5
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
nvmextc nvmextc is offline
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
Default Re: help buying multimeter

No, I wasn't sure how to without damaging it.
Should I test it like it says in step 4 "If your reverse diode and capacitor are already connected to your LD you can connect your test assembly to the output from your fixed resistor and the neg of the battery."
nvmextc is offline   Reply With Quote
Old 04-20-2008, 02:36 AM #6
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
chido chido is offline
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
Default Re: help buying multimeter

Just set the pot to the maximum resistance, connect your LD to the driver, (make sure to short out the capacitor first) test the mA by using the 1 ohm resistor like you would with the 4 silicon diodes and slowly lower the resistance of the pot while checking your multimeter.
chido is offline   Reply With Quote
Old 04-20-2008, 09:26 AM #7
rog8811's Avatar
Class 3B Laser
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
rog8811 rog8811 is offline
Class 3B Laser
rog8811's Avatar
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
Default Re: help buying multimeter

Just be sure, you have set the multi meter to DC mv (Direct current milli volts) when connecting across the shunt resistor? *If your shunt res is 1ohm your mv reading is also your ma (milli amp) reading....

Regards rog8811

*sudden other thought....On most mm's the numbers dissapearing indicates "over-range" so if you are on mv now, change it up to the next scale, could be something like DC 20v.
My meter does up to 400mv on the lowest scale maybe yours has a lower top end?
__________________
See all of my videos on Vimeo
http://www.vimeo.com/4454150

Lots of tutorials and information on lasers
http://www.rog8811.com/

In the land of the blind the one eyed man..... is most likely holding the laser
rog8811 is offline   Reply With Quote
Old 05-01-2008, 05:11 PM #8
Member
 
Join Date: May 2008
Posts: 32
Rep Power: 0
laserhacker is on a distinguished road
laserhacker laserhacker is offline
Member
 
Join Date: May 2008
Posts: 32
Rep Power: 0
laserhacker is on a distinguished road
Default Re: help buying multimeter

hi all. i am new to the forum and read a lot of posts. just wanted to know if this meter i have would be good to check the mw on the laser i am going to build.



i have a craftman model 82344
laserhacker is offline   Reply With Quote
Old 05-01-2008, 07:29 PM #9
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
chido chido is offline
Class 3R Laser
 
Join Date: Dec 2007
Posts: 1,918
Rep Power: 117
chido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond reputechido has a reputation beyond repute
Default Re: help buying multimeter

mW?? I think you mean mA. You need a laser power meter to check the output of a laser.
chido is offline   Reply With Quote
Old 05-02-2008, 09:45 AM #10
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
nvmextc nvmextc is offline
Class 2 Laser
 
Join Date: Jan 2008
Location: Sydney, Australia
Posts: 375
Rep Power: 15
nvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of lightnvmextc is a glorious beacon of light
Send a message via MSN to nvmextc
Default Re: help buying multimeter

I worked out the reason why I can't find current with my DMM, it's not made for diode testing and doesn't show voltage drop.
nvmextc is offline   Reply With Quote
Old 05-02-2008, 10:26 AM #11
SenKat_Stonetek's Avatar
Class 4 Laser
 
Join Date: Mar 2008
Location: San Antonio, TEXAS !!!
Posts: 6,058
Rep Power: 41
SenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to behold
SenKat_Stonetek SenKat_Stonetek is offline
Class 4 Laser
SenKat_Stonetek's Avatar
 
Join Date: Mar 2008
Location: San Antonio, TEXAS !!!
Posts: 6,058
Rep Power: 41
SenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to beholdSenKat_Stonetek is a splendid one to behold
Default Re: help buying multimeter

Quote:
Originally Posted by laserhacker
hi all. i am new to the forum and read a lot of posts. just wanted to know if this meter i have would be good to check the mw on the laser i am going to build.



i have a craftman model 82344
you can check the current <ma>, but not the mw. That is a great model of a multimeter - depending on the circuit you build, you should be able to find a point to measure the current with no issues. If you are building the standard LM317 circuit, then you will be good to go!!!
SenKat_Stonetek 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 09:56 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