Suggested by an American publication, this circuit has 5 operating conditions indicated in the diagram. The circuit can be designed based on modern equivalent transistors.
This circuit is from the time when cars used contact breakers. This 80's version measures the dwell...
September 2016 - It can be obtained from Mouser Electronics a kit for developing wireless remote...
This simple solar powered MW receiver was obtained from a 1974 Popular Electronics. The transistor can...