80-second timer (CB8875E)

This circuit is from a 1968 publication by General Electric. The timing can be changed by changing the time capacitor.

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CMOS Driver (CB13776E)
This circuit is from a 1976 Motorola CMOS manual. It can be implemented with modern Darlingtons like...
Voltage Controlled Unijunction Oscillator (CB4432E)
In the figure we have the way of modulating or controlling the frequency of a relaxation...
Alternator Monitor (CB15050E)
The purpose of this circuit is to monitor the operation of an alternator in cars with a 12 V...