Panic button (CB7077E)

Found in a 1968 Motorola publication, this circuit generates a high-powered audio tone when triggered. Equivalent transistors can be used.

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Secret Combination (CB9879E)
This game aims to make you discover which is the combination of activated switches that make the...
28 V PWM Regulator (CB8502E)
Found in a Motorola's 1968 documentation, this circuit operates at 16.5 kHz. The output is 5 A....
Simple Capacitance Meter (CB25854E)
This circuit can measure capacitances in various ranges using a common analog indicator. The...