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.
The integrated circuit used in this configuration is not very common today. However, more modern...
This small Hartley oscillator uses an output transformer for transistors. The frequency is...
This circuit was found in a 90’s EDN. The components used are still common and the sensors can have...