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.
We found this circuit, which appears with variations on this site, in a European documentation from the...
This circuit includes a battery charging system and an inverter for operating a fluorescent lamp....
) This variable frequency oscillator was found in an old American documentation. Transistors allow more...