Tachometer using the 555 (CB414E)

This circuit can be used to measure the frequency of a low frequency square signal. The signal can be produced by transducers, for instance, in a motor. The meter is a 0-1 mA analog type, and end-of-scale is adjusted by the 10 k trimpot. The capacitors are choose according the frequency of the signal to be measured.

 

Tachometer using the 555
Tachometer using the 555

 

 

 


Circuit Bench