This circuit was suggested by Texas Instruments in a 1980s documentation. The transistor must be equipped with a heat sink. The transformer has 10 A secondary current.
This circuit is from Japanese documentation from the 1960s. The coil data is provided in Japanese and...
This circuit is from a cookbook to timers. The circuit is triggered by an external signal and,...
Using a varactor or varicap, this 1969 Electronics World circuit has a modulation range from 75...