This 8-tube amplifier with 12 W output was found in an American publication from 1947. The output is in counterphase with pentode tubes.
This circuit was found in a 1970 American publication. The FETs are power types according to the...
This very simple brake light circuit is activated with the brake lights, just connecting it by...
This voltage regulator from STMicroelectronics provides a 1,2 A current in the voltage range from...