24VDC power supply

When choosing a 24 vdc power supply is it important for the output amperage to match the the device it will be supplying power to? Example: Would a 24vdc / 100ma power supply be ok to operate a timer relay rated (24vdc /8ma control) or should I find a combo closer to the same amperage?

by Dadvin
September 17, 2017

2 Answers

Answer by mikerogerswsm

The current capability of the supply should be more than that required by the load. When using a feeble load on a really beefy supply, ensure that there is some protection. In the example given the combination is okay.

+1 vote
by mikerogerswsm
September 18, 2017

Answer by Dadvin

Thank you for your response Mike. I recently received an invitation to receive your online text book. I would love to sign up for something like this but most of these things assume I'm further along in electronics than I am. Take for instance the timer relay I'm wiring. It's a simple DC circuit but the wiring diagram included with the relay means almost nothing to me. It's kind of funny because I can read the 107 page wiring diagram for a 2 million dollar German press that has an electrical cabinet bigger than my kitchen but I cant make sense of the drawings for a simple 24 volt alarm relay. Thanks again for your help, I hope I can lean on you again in the future. Mel

+1 vote
by Dadvin
September 19, 2017

Hi Dadvin, I've no connection with CircuitLab, I'm just an ordinary Joe who logs in now and then, so it's not 'my' textbook, alas. Yes, I find relay circuits difficult, too. Keep posting! mike

by mikerogerswsm
September 19, 2017

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