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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Remote Load Monitor (CB4642E)
The purpose of this project is to monitor remote loads. The windings are made in a burnt...
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This circuit allows to activate three functions in a controlled way, determined by a diode array....
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This circuit is from Radio Electronics. The magazine no more exists, but the circuit can be...