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Subject: Arctangent computation with op-amps.

Date: 11/14/02 at 3:09 PM
Posted by: Dan Bernes
E-mail: danber@telicom.ca
Message Posted:

I have a shaft position encoder that generates Sin and Cos signals, i need to display the shaft angular position in degrees using an analog meter.
I need an analog circuit that will compute the arctangent of the quotient of the Sin and Cos magnitudes.
Angular position = arctan sin/cos.
The Sin and Cos magnitudes have a +5V to -5V excursion.
Piece of cake, isn't it?
Any help on this subject will be greatly apppreciated.

Dan.


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