Bicycle speedometer (CB7382E)

This circuit appears in other versions on this site. obtained from other publications. This is from American documentation from the 90s.

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5 and 15 V Dual Symmetric Power Supply (CB4304E)
This symmetrical power source for currents up to 1 A was found in a 1986 documentation, serving...
Metronome with Accent (CB12011E)
This circuit synthesizes the tick of a metronome with the speed controlled in RV1. The circuit is...
Two-phase VCO (CB9433E)
Found in Radio Electronics from the 90s, this circuit generates signals from 100 Hz to 1.5 kHz....