Another of the many tachometer circuits we have on our site. This one is from the September 1976 Radio Elecronics magazine. The circuit is connected to the platinum contacts of a car or to a sensor.
This filter that can use any operational was found in a French documentation from 1982. The power...
In the figure we present an extremely simple circuit of a voltage source regulated by a zener...
The maximum current of this power supply is 2 A and the output voltage can be set between 6 and 24 V. The...