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.
This circuit is from a 1979 documentation. The FET can be the BF245 or MPF102 and the bipolar...
The circuit shown is from the 1960 Mullard transistor reference manual. The circuit has a common...
This circuit was found in a 1981 publication and consists of an interesting handicraft game. The...