Unijunction SCR Trigger (CB21469E)

This unusual unijunction transistor SCR firing circuit was found in a General Electric documentation from the 1960s.

100 kHz Tunnel Diode Oscillator (CB1335E )
This basic oscillator with tunnel diode generates a 100 kHz signal with 1 uW output power. The...
Headphone Amplifier (CB14463E)
This amplifier for medium or high impedance magnetic headsets (above 200 ohms) was found in an...
Crystal Time Base (CB19368E)
This circuit provides precise signals of three frequencies, using CMOS technology. The integrated...