Author Topic: Power supply - another current decimal point  (Read 1082 times)

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Offline JaneTopic starter

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Power supply - another current decimal point
« on: July 27, 2018, 07:10:54 am »
I use , 3010d power supply e.g. https://www.eevblog.com/forum/testgear/yihua-10a-lab-power-supply-review-and-fixing/

It works OK but I would need more decimal points of current - now it has only ONE decimal points.
How much difficult would it be to add another decimal point - so I would have TWO decimal points?
Or is it possible to add Analog  type current meter panel?
 

Offline sokoloff

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Re: Power supply - another current decimal point
« Reply #1 on: July 27, 2018, 09:05:27 am »
Why not just patch an ammeter inline with the output?

You can get a decent handheld DMM for $10 on Amazon. Patch that inline.
 

Offline ArthurDent

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Re: Power supply - another current decimal point
« Reply #2 on: July 27, 2018, 12:31:49 pm »
I have a different 30V10A digital display P.S., the Longwei K-3010D which is a smaller physical size SMPS and it isn't a bad supply for the money but I found that the supply I have does drift with time so if I set it to 15.0VDC with a load, a few minutes later it may have drifted to around 14.8VDC. Probably the one decimal point meters are more than adequate for the design of these cheaper supplies.

If you're just interested in what the current is at a moment in time, the suggestion of using a DMM inline with the output is a good way to go. If I want more resolution and stability I use a much better (and expensive) supply like this one.
 


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