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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Fluorescent SCR Inverter (CB12328E)
This circuit is from a 1967 publication. It is possible to power a fluorescent lamp from a 12 V...
Modified Hartley Oscillator (CB21138E)
This circuit was found in old American documentation. Transistor is general purpose and coil rated...
Schmitt Trigger LM3900 (CB5049E)
With a strong positive feedback (via a 10 M resistor) we can get the trigger setting for the...