Yes. What you're looking for is called a "linear power supply" and you can either build it or buy it. If you're going to build it, all you will need are: - a 120VAC to 7.5 to 10VAC transformer -- to power the meter, you need very little power. Say, 1 amp output at 7.5 volts. - A "7805" three-terminal power regulator. - a rectifier bridge - a 1n4001 switching diode - some capacitors to provide filtering to the regulator input/output. And some wire, solder, frame, etc. Alternatively, you could look at some electrical surplus outfits and find an open-frame linear power supply for, oh, $15 to $30. How much you want to spend in time and/or money Mike? Edit: here we go. Brand new, open-frame linear power supplies. The cheapest is 5VDC @ 1.2A. $27. http://www.mpja.com/viewallpict.asp?dept=26&main=1 Until the input voltage gets to within range, the power supply won't produce anything. Minimum voltage on this supply is the configured input = 13%, for 120VAC, that would be about 105VAC input to see regulated output.
Edited by NVDave 9/13/2006 02:04
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