Shock Generator (CB26139E)

This electronic defense was found in the 1990 special issue of Radio Electronics Experimenter magazine. A few hundred volts is generated.

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Precision Differential Amplifier (CB14118E)
The presented differential amplifier, indicated for instrumentation, was obtained in the 1994...
Dialing indicator (CB5995E)
This circuit provides a signal when dialing occurs. The circuit is powered by the telephone line...
TTL Variable Oscillator (CB25333E)
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...