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Checking Voltage

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Hawk Daddy:

I need to check the voltage on my power supply.  I have a digital meter, and I would like to know what setting I use to check the voltage.  Also what do I use as test points?  I was thing just connecting it to the positive, and negative on the switcher.  BUt I need to know what setting to set it on for the meter to read less then 5.5. cause I don't want to mess up my new board.

Hawk

hng:

You should set the meter to read HIGHER than the expected output voltage.   Most meters have a 20 volt setting. Use that. Put the black to  black, and the red to red, and you should be set.

Hawk Daddy:

I'm talking about like, acv, dcv, ohm, dca, and then like 500v, 200v, 20v, 2v, cause I'm pretty sure it has to be on DCV, then I need to know if i need to check it with 500v, 200v, 20v, or 2v, setting, and then what am I looking for when I do, I'm a complete noob at checking voltages.

Hawk

Hawk Daddy:

I think I got it, I put it on 20v, and got a reading of 5.29. Is that too high, the board that I have says not over 5.5 v, and 5.29 isn't that far away from it.  Just let  me know.

Hawk

Fozzy The Bear:


--- Quote from: Hawk Daddy on June 28, 2007, 08:32:57 pm ---I think I got it, I put it on 20v, and got a reading of 5.29. Is that too high, the board that I have says not over 5.5 v, and 5.29 isn't that far away from it.  Just let  me know
--- End quote ---

Hawk... 5.29V is way less than 5.5V  don't worry, that's fine. If you're measuring the power supply output under a no load condition (i.e. you don't have anything but the meter connected to it) then it will read more than 5V .... But when it is under load (i.e. your board is connected)  that output will drop slightly. Which is why you're reading 5.29V. It should drop to just over 5V once you get it connected up.

Best Regards,
Julian (Fozzy The Bear)

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