Magnetic Sensor with Op-AMP

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Dineshkumar Mani

Joined Jul 15, 2017
1
I have built a circuit magentic sensor with op-amp (LM324) for speed measurement, which is working fine as per my required bandwidth (100Hz to 350Hz), but I want to know minimum/maximum cut off frequencies,
how can i calculate???????
refer attached circuit.
Magnetic Sensor Details: Coil wounded over the permanent magnet, Magnet Gauss: 6000 density/, L: 60mH, R:950 Ohms
 

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AlbertHall

Joined Jun 4, 2014
12,343
That's not something you can easily calculate because of the vagaries built in to your magnetic circuit. Experiment is your best bet.
 
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