Shielded cable driver (CB20917E)

This circuit was found in National documentation from the 1980s. The circuit is intended for transmitting signals on a shielded cable.

1 kHz Multivibrator (CB486)
A square signal of about 1 kHz is produced by this astable multivibrator. Frequency is determined...
Voltage Controlled Oscillator (CB10826E)
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
High impedance differential amplifier (CB9837E)
Based on operational amplifiers of the time, this circuit from the 1980s has high input impedance. The...