PC address decoder (CB20536E)

This TTL decoder circuit for PC ports was found in a document from 1992. The power supply can be PC's own circuit.

Multimedia PWM Amplifier (CB17971E)
This circuit provides a power of the order of 2 W, characterized by high performance. The output...
12 V to 110 V x 60 Hz Inverter (CB13913E)
This 12 V to 110 V inverter with 100 W was found in a 1977 Signetics manual. The transformer must...
Amplifier 100 plus 100 V (CB15799E)
The gain of this amplifier is given by the components indicated in the formulas next to the...