40 LEDs each accompanied by a comparator, reference voltages generated by a chain of resistors. Linear meter would have been easy to make, but a real VU meter has to be logarithmic. Maybe the meter could be used as a power meter in a power amplifier. VU meter uses formula 20log(V/V0) and power meter formula 10log(V/V0).
Authored by
at
, Added: 19 Jul 2007
http://www.tekniikka.oamk.fi/~archy/vu-meter/index.html
