Driver Darlington (CB8957E)

This circuit was obtained in a 1960 documentation of General Electric. It is applied in the control of registers of the time.

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Beep For Flasher (CB4340E)
This circuit adds a beep to turn on with car flashers that do not have this feature. A 47 ohm to...
TTL Oscillator (CB15741E)
Depending on the value of C1, this oscillator can produce signals of up to 1 MHz. For a capacitor of 10...
Hearing Aid Amplifier (CB18574E)
This commercial circuit, sold under the designation H531 in Japan in the 1960s, used three...