Old 08-03-2012, 09:46 PM #1
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Default Problems with test load

Heey,

I am having some problems with my test load for my 660nm diode.
I am useing 3 1N4007 diodes and 1 1ohm 5 watt resistor.
When i measure the voltage at the resistor it gives back 0mV, wich is weird because when i measure the voltage that the driver outputs it gives back the correct voltage.......
I already made a second test load because i thought it might be a broken diode or resistor.

Thanks in advance.


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Old 08-03-2012, 10:13 PM #2
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Default Re: Problems with test load

What kind of a driver?

If you post a picture or diagram of your setup i may be able to help you.
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Old 08-03-2012, 10:23 PM #3
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Default Re: Problems with test load

I am useing a mohgasm 490mah 17mm round driver, i am not at home so i cant take a picture.

But this is my setup

Driver+ ---1w1ohm--->--->--->--- Driver-
---------|-----------|
--------Measure here

I am useing 2 CR123A battery's.
I really hope you guys can help me because i can't figure it out.

Last edited by Vertigo666; 08-03-2012 at 10:25 PM.
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Old 08-03-2012, 10:30 PM #4
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Default Re: Problems with test load

With a round driver the middle circle is battery positive, and the outer ring is negative.
Do you have that right?

Mabye you have the diodes backwards, try fliping them around
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Old 08-03-2012, 10:39 PM #5
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Default Re: Problems with test load

I am sure that i connected the possitive and negative correctly. I am not sure about the diodes, when get home i will try to flip the diodes. When i am done i will post the results

Thanks for your help.
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Old 08-05-2012, 11:38 PM #6
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Default Re: Problems with test load

It is working now, 1 of my diodes was flipped..........
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