This circuit is from a time when this type of feature was not common in line cars. The pulse transformer has a 1: 1 turn ratio and the SCR admits equivalents.
This small transmitter has an RF amplifier stage with coupling made from the central socket of the...
Found in a 1965 Motorola documentation this circuit drives magnetic-type fuel pumps found in cars...
This circuit simulates a multi-position switch using programming buttons. The circuit is from an...