Vibration Tachometer

[evi1kid]

Dear all,

Currently trying to build a Virbration Tachometer to be used on a DC motor to measure RPMs of 2500 to 6000.

Does anyone know of any schematics/diagrams available?

In addition, if anyone know of how to calibrate the reeds to the tachometer, that will also be appreciated.

Thanks for your time,

-evi1kid

 

[IRstuff]

doesn't sound like your company is making good utilization of its money if it's designing and building something that it doesn't even know how to verify its functionality.

TTFN

FAQ731-376

 

[Strong]

I did an Internet search on "tachometer circuit" and found a lot, like this link:

http://www.discovercircuits.com/T/tachometers.htm

Vibrating "reeds" are used in mechanical and not electrical tachometers. Either type tachometer can be purchased at low cost already made!

Walt

 

[Tmoose]

Depending on the resolution you need, for Less than $40 for the German made one sold by Briggs and Stratton and others. 19200 - 800 to 25,000 rpm ?

http://www.manddsmallengine.com/briggs/tools/images/19200.jpg

http://www.treysit.com/treysit-sirometer.pdf

pretty good for strong 1x and not direction sensitive ( round wire ). It sure agreed I have a wheel/tire issue on the old Volvo.