This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
This circuit was found in a 1970 US publication. Transistors are still common and the circuit can be...
Mouser Electronics has in stock Texas Instruments Buck controllers LM5145 to operate with voltage...
This circuit found in an American documentation from 1964, alters the duration of a pulse and can...