This circuit for car engine spot adjustment was found in an 80's Radio Electronics. The circuit makes use of a xenon lamp and the pulse transformer must have a turn ratio of 1:50.
Found in Popular Electronics from the 90's, this circuit makes use of components from the time. |...
This circuit for the logic control of the 555 in a power supply was found in the October 1989...
In this circuit, a light-sensitive SCR or Light Activated SCR determines the operation of an...