> am changing my voltmeter design a 3rd time and going with the LM3914. I > have yet to figure out how I can use it for an ammeter, but that's another > story. shunt. http://www.tpub.com/content/neets/14175/css/14175_33.htm That's how those cheap digital testers work, if you crack one open you'll find a big piece of wire (1,5mm diameter, about 1 inch long), that's the shunt resistor. BTW, you know about the ICL7107 right? It's a 40-pin IC with all you need to drive a 3 1/2 digit 7-seg led display, exactly like cheap testers. www.intersil.com, order free samples with free shipping!
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Re: Experimental method
2005-07-26 by hjf2k2