Here we have a magnet in a wheel. A sensor has 17 VDC applied to one terminal. The second terminal alternates between 5V and 0V. No magnet, 5V. Yes, magnet, 0V. The third terminal is obviously what I called, "common". Everything that is not the magnet or the sensor is either plastic or water. (It's a water meter of sorts.) The axis of the magnet is parallel with the axis of the wheel. It is counterbalanced with a plastic mass, but I didn't draw that part.
I want to find that sensor as a TO-92 or an SMT-3
What do you call it?
About how many gauss is the correct range?
What kind of circuit would be connected (assuming this makes an input for a microprocessor).
It seems strange to me because of the 5V output when no magnet is applied.
A range of Vcc causes a 5 volt output unless it is zero volts?
It passes current when no magnet is nearby, but the voltage is clamped to the 5V line with a diode, and the sensor stops passing current when a magnet is nearby and the voltage falls to zero because of a resistor to ground?
Obviously, I don't have a clue how to measure the magnetic field and can not understand the myriad devices available as Hall Effect sensors.
A partial answer will be helpful.
Number Twelve.
I want to find that sensor as a TO-92 or an SMT-3
What do you call it?
About how many gauss is the correct range?
What kind of circuit would be connected (assuming this makes an input for a microprocessor).
It seems strange to me because of the 5V output when no magnet is applied.
A range of Vcc causes a 5 volt output unless it is zero volts?
It passes current when no magnet is nearby, but the voltage is clamped to the 5V line with a diode, and the sensor stops passing current when a magnet is nearby and the voltage falls to zero because of a resistor to ground?
Obviously, I don't have a clue how to measure the magnetic field and can not understand the myriad devices available as Hall Effect sensors.
A partial answer will be helpful.
Number Twelve.
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