4060 XTAL Oscillator (CB22401E)

We found this oscillator in an old documentation. The crystal frequency can be different to get other output frequencies.

Pure sinusoidal oscillator (CB9190E)
This circuit generates a sinusoidal signal with only -80 dB THD. The circuit was found in a 90's...
Sencore transistor test (CB22546E)
This test, the commercial transistor tester, had its diagram published in an article in Radio...
Adjustable Regulator LM323 (CB15319E)
This circuit can supply voltages in the range of 8 to 20 V with a maximum current of 3 A. The...