We found this circuit in a 1965 publication by General Electric. The zener is 8.2 V x 1 W and the table shows the capacitor values according to the number of cylinders in the vehicle.
This circuit, suggested by an old American publication, allows you to use the AM radio antenna of a...
Powering from a 36 V supply this circuit has a power output of 16 W in 4 ohm loads. With 40 V and...
The circuit illustrated in Figure allows external loads (8) to be driven from parallel port...