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Article #2166Re: 250 Volt AC 50hz supply from battery to test Multimeter
From: budgie
Date: Tue, 17 Feb 2004 08:11
Date: Tue, 17 Feb 2004 08:11
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On Tue, 17 Feb 2004 12:58:41 +1100, "John G" <Greentest@ozemail.com.au> wrote: >A small invertor from Dick Smith or Jaycar will run from > your vehicle attery and provide plenty of AC for this job. I suspect the o/p's vision was for something MUCH smaller, and vehicle atteries don't fit most ppl's toolbox. A simple oscillator + driver transistor pumping a step-up transformer should do the job - no rocket science. After all, the application is really a go/nogo situation, to indicate that the multimeter ain't dead. Actual output voltage and frequency are far from critical.
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