It is a 13.8 V x 10 A regulator obtained in a 2008 documentation. The 2N3055 transistors must be mounted in excellent heat sinks and the voltage is adjusted in the trimpot.
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...