Bike speedometer (CB20497E)

Latest

Details: Written by: Newton C. Braga

Bike speedometer (CB20497E)

This circuit can be powered by a solar cell. The circuit is from a 1991 documentation having a phototransistor as sensor.

Circuit Bench

Instrumentation Amplifier with Differential Input (CB4929E)
The integrated circuit used in this 80's differential amplifier is a quadruple version of the 741...
Zener Test (CB5326E)
With calibrated RV1 it is possible to find a zener diode voltage. The integrated circuit is 0 741...
Symmetrical Regulator LM380 (CB5879E)
This 80's circuit uses an audio amplifier to obtain a symmetrical source from a single source. The...