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 circuit was found in Radio Electronics magazine from October 1964. The circuit uses two...
This 5 V power supply for TTL, Shields and microcontrollers is old, and the components can be...
This automotive alarm uses common components and is suitable for old vehicles. The circuit was...