OpAmp question
OpAmp question
(OP)
I am working on a circuit to emulate the output of a speed/position sensor on a machine. The sensor is a magnetic pickup that reads a wheel that has 8 evenly spaced teeth with a 9th tooth for position indication.
The output of the sensor swings from +15 to -15 volts for each tooth. I have coded a microcontroller to generate the proper timing for this pulse train, but am having trouble with the output circuit.
I can easily make two outputs from the uc, one for the positive half of the wave and and one for the negative half. Is it possible to drive a single opamp (say a TL082) as inverting and non-inverting?
My background is programming not EE, getting hung up on the hardware side of things.
The output of the sensor swings from +15 to -15 volts for each tooth. I have coded a microcontroller to generate the proper timing for this pulse train, but am having trouble with the output circuit.
I can easily make two outputs from the uc, one for the positive half of the wave and and one for the negative half. Is it possible to drive a single opamp (say a TL082) as inverting and non-inverting?
My background is programming not EE, getting hung up on the hardware side of things.





RE: OpAmp question
What is this for? Describe the project in more detail so we can give better answers...
Dan - Owner

http://www.Hi-TecDesigns.com
RE: OpAmp question
TTFN
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RE: OpAmp question
Thank you for your comments!
RE: OpAmp question
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: OpAmp question
TTFN
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RE: OpAmp question
RE: OpAmp question
Your post is quite incomplete.
You want an emulator for a magnetic pickup. Ok.
A typical simple magnetic sensor does not generate a rectangular waveform. If you have one that gives -15V for no tooth and +15V for a tooth, for example, that is a digital magnetic sensor. It requires one output from the microcontroller, this output needing amplification and level shifting. (One opamp or a few transistors and resistors). If you have an analogue sensor giving interesting shaped pulses you will need some resistors and capacitors to shape the pulse and an EE to do the work.
Post a data sheet for the sensor (or just the part number) for more appropriate help.