Diode test (CB20735E)

This simple diode test appears at other points in this section. Or circuit can be adapted to use LEDs instead of ordinary lamps.

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RF Pulse Generator (CB4132E)
This high frequency pulse generator was found in an old American documentation. The circuit makes use...
Amplifier MC14546 (CB20041E)
This small 1 W amplifier uses a Motorola integrated circuit from the 1970s. The integrated circuit...
Triac Heating control (CB21372E)
We found this circuit in a 1966 RCA manual. The integrated circuit is unusual, and the Triac must...