Constant current source (CB8822E)

This 2mA source was found in a 1968’s Philips documentation. The transistor may be the BC549.

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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)
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