Good evening all. As I was tuning up my Drake L-7 amp this evening there was a very loud bang and a visible flash behind the plate voltage meter on the left. Foolish or not I reset the power supply c
** What is the measured resistance of the anode-circuit parasitic suppressor resistors? ** In an L-7, R12 is supposed to be the glitch-R. However, at a minimum it needs to be replaced with a 10 - 15
Torrey, Did you hear a loug band on both attempts, or just on the first attempt. How about the visible arcing, did you see it on both attempts? How about meter readings? When the close the key line w
Michael Tope wrote: A number of amplifier gurus recommend that this be replaced with a high voltage globar type glitch resistor (10 to 30 ohms). Specifically, Guru Eimac: http://www.cpii.com/eimac/ab
snip Good point Mike, Fuses and circuit breakers do not limit fault current, but only fault duration. (except in the case of "current limiting fuses" which open and quench the arc very fast, but are