This 5-tube hi-fi amplifier was found in an American publication from 1947; The output is in class B and the circuit uses a source with transformer.
March 2017 - Texas Instruments is already making available through Mouser Electronics the LP5907 an...
We got this circuit in an old publication from 1978. The circuit uses a phototransistor and an...
This simple PWM control was found in American documentation. We can use any power transistor...