This power supply with only 4 components has basic full-wave configuration. The diodes depend on the current and the transformer voltage determines the output voltage.
Frequencies up to just over 100 kHz can be obtained with an oscillator based on one of the four...
This circuit, found in a Popular Electronics from 1992, is based on an oscillator and a crystal...
This is a discrete equivalent version of an open collector TTL gate. What we have is an inverter...