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Topic: help on dual dc supply (Read 1 time) previous topic - next topic

Grumpy_Mike

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is it better to have big caps before or after the regulator?

Both are good but the biggest caps go before the regulator.

winner10920

Ok, I had some bigger caps and smaller ones, I put the big ones on already and I didn't do the regulator yet so that works out,

winner10920

About the mains ground and my "ground", is it safe to connect these two? In the future I wanna put my supply in some sort of housing and am gonna ground it from the mains if I can
I looked at my supply with my oscope and I get a sine wave unless I attack the probe ground to my ground so I guess obviously its safe since I believe the probe ground is the mains ground as well?

elandd2011


Grumpy_Mike

Personally I would not do this because it restricts how you can use your power supply. Leaving the output floating allows you to do things like use it as a negitave supply.
I do not think it is any safer.

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