The circuit is a little bit more complicated I'm afraid. It has a drive control, and a biasing scheme with high precision 0.1% resistors. Normally, the drive control signal and the biasing voltage produce the needed current in the collector of the Darlington connected transistor. The control...
I have a power amplifier circuit that has a darlington connected bjt pair. The voltage drop of the transistor goes from 1.5 volts to around 1.2 volts after the circuit has been turned on and is running for a few minutes. I was wondering if there is anyway to make the bias voltage to the...