I am designing a circuit that will convert the signal from a magnetic (reluctor) sensor as used on engines to read crankshaft position.
This circuit works, but there are some problems. It is far too sensitive and can read the signal from the sensor when it is 100mm from the teeth on the crankshaft trigger. The sensor is normally 1mm from the teeth.
I need to modify the circuit so it will not read any signal that is less then 500mv and have a hysteresis. I need any signal that goes over 500mv and then crosses zero to be seen as a good signal.
Sorry if I do not have the correct jargon. My background is automotive not electronics.
Ray.
**broken link removed**
This circuit works, but there are some problems. It is far too sensitive and can read the signal from the sensor when it is 100mm from the teeth on the crankshaft trigger. The sensor is normally 1mm from the teeth.
I need to modify the circuit so it will not read any signal that is less then 500mv and have a hysteresis. I need any signal that goes over 500mv and then crosses zero to be seen as a good signal.
Sorry if I do not have the correct jargon. My background is automotive not electronics.
Ray.
**broken link removed**