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T O P I C    R E V I E W
sujay Posted - Sep 08 2013 : 6:13:01 PM
Hi

I'm not very familiar with electronics, and I'm trying to build a kine of regulator that will cut of the power when the out pur voltage is higher then 10V

I need it to control the speed of AC motor that has a tachometer.
the tachometer is giving 3V-22V (AC) ,depending on motor speed.

I was thinking to use a zene diode and will be very happy for some help

thanks
1   L A T E S T    R E P L I E S    (Newest First)
audioguru Posted - Sep 12 2013 : 08:31:10 AM
The output voltage of the tachometer can be rectified and filtered into DC.
The resulting DC can be attenuated with two resistors and fed to the input of a comparator IC that has a reference voltage that you want the motor to stop.

The comparator drives a transistor that powers the motor.

It is too complicated for you since you are not very familiar with electronics.

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