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NE CO | You can probabaly find a multi-voltage transformer that will output close enough to 5 VDC for your application. I'm thinking of the all in one power supplies that have a multi-output jack that supplies different voltages for things like cell phones, printers, cassete players and the like. It should work just fine as a 10% voltage difference on the 120 V will still only be 10% at 5VDC or 1/2 V variation which I think would work fine for the Digital Voltmeter. I suppose you could fine a regulated power supply that would plug into the 120 and provide a more constant voltage, but it would probably cost $1-200 vs $15 or so for the cheapie transformer. | |
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Electronics design question
