100 kHz Oscillator (CB22379E)

This is the single-sourced version of the previous oscillator. Frequency can be changed by changing C1.

Constant Current Transistors Tester (CB18920E)
This transistor tester circuit has the advantage of using a constant current source in the tests....
12 V x 5 A Power Supply (CB1505E )
This circuit is from a 1977 publication for radio amateurs presenting a crowbar protection. The...
Current limiter (CB8365S)
Suggested by a 1968 documentation, this circuit limits the current of a regulator and can be...