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.

FAN73912 High-Power Mid-Bridge Driver
August 2017 - This new component of On Semiconductor is available from Mouser Electronics. This is an...
Impedance Ratio for Some Common Values of Turns Ratios (IP097E )
Turns Ratio Between Windings Impedance Ratios 100:1 10 000:1 99:1 9 801:1 98:1 9 604:1 97:1 9...
Crystal Overtone Oscillator (CB5112E)
The capacitors of this 80's circuit must be ceramic and the transistor can be any PNP that...