On 06/04/2011 10:07 PM, raypsi wrote:

hey OM

The dead give away should have been the series resistor to that OA3
heating up big time since P=I^2R the current doubled, the power
quadrupled that resistor would have could have let its' smoke out.

73 OT
de n8zu
Unless the original designer was paranoid enough to use an over sized
resistor in the first place. Back when I first started out in ham radio
building with tubes I was guilty of using a 50W resistor in a 5-10 watt
circuit. (half because I got the 50W part cheap and half because I knew
that I didn't quite know what I was doing and wanted to be safe).