This simple source uses two 2N3055 transistors that must be equipped with good heat sinks. The source has no protection, only an input fuse. The diodes are for 5 A x 50 V or more.
Frequencies up to just over 100 kHz can be obtained with an oscillator based on one of the four...
This two-transistor circuit is from a Radio Electronics magazine from April 1965. The transistors are...
This traditional monostable configuration is from a Motrorola documentation from the 70s. The...