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Old 04-27-2010, 11:36 AM #1
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Default cant get a proper reading off my dummy load

I know i have my dummy load hooked up right so im wondering if i got the wrong parts, 4 1n4001 diodes with a 2 watt 1 ohm resistor
-nick


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Old 04-27-2010, 11:43 AM #2
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Default Re: cant get a proper reading off my dummy load

Quote:
Originally Posted by nkgamer1990 View Post
I know i have my dummy load hooked up right so im wondering if i got the wrong parts, 4 1n4001 diodes with a 2 watt 1 ohm resistor
-nick
Pictures/drawings Required...

You have not given enough info for anyone to help you...

It's like me saying... I put gas in my car but it won't go...
did I do it wrong....

Jerry
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Old 04-27-2010, 01:55 PM #3
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Default Re: cant get a proper reading off my dummy load

Place the DMM in parallel with the one ohm resistor and make sure its set to VDc 2000. 1 mv = 1 ma. Does that help? also make sure all the diodes are cathode to anode... and facing the right way otherwise current can not flow.

Pictures would be helpful -Adrian
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Old 04-27-2010, 02:00 PM #4
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Default Re: cant get a proper reading off my dummy load

Does it look like this? Are you measuring it there? Is your DMM set to voltage (1mV = 1mA)?



Peace,
dave
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Old 04-27-2010, 02:06 PM #5
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Default Re: cant get a proper reading off my dummy load

Damn, Dave I was just looking for that pic!!



See the diodes.... they must be in this orientation...otherwise the current will not flow. Please take a pic of what you have and we should be able to work it out from there.
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10.6um - >40W CO2 Laser - 25W RF excited CO2 Laser*
685nm - Being built!
660nm - 250mW LOC PowerLight B50 Host - 100mW WL pulsar
635nm - 430mW C6 Host*
632.8nm - Red He-Ne laser ~1mW
593.5nm - Regal 5
542.8nm - Green He-Ne laser ~2.5mW
532nm - 620mW+ lasersman Firedragon III* - 100mW PGL-III-M from JETLASERS* - 70mW Rayfoss Host*
~~~ - 175mW Rayfoss Host - <5mW WL Core - 55mW DinoDirect review laser*

488nm - On the hoist
473nm - 2x CNI lab lasers ~40mW
445nm - 3W Big Boyz Laser - >1.1W Cree C6 Host - 650mW WL Arctic
405nm - 65mW GLP-405 Aquarius host - 160mW 6x Blu-ray MXDL Host
Total: 71,868.5 mW

Goggles!
Laser glow LSG-532-Sport protective eye goggles OD 7+ 190-532nm HIGHLY RECOMMENDED!!
Jetlasers wrap around 190-540nm OD4+ goggles*
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Scopeguy20 Blublockers for 405nm lasers!

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Old 04-28-2010, 02:39 AM #6
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Default Re: cant get a proper reading off my dummy load

http://i892.photobucket.com/albums/a...0/DSC01040.jpg
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Old 04-29-2010, 09:35 AM #7
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Default Re: cant get a proper reading off my dummy load

thats the pic of the test load. i connect a positive battery lead to the spring on the driver and the - battery lead to the case ground heatsink then i measure over the pot.
what setting should my dmm be on?
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