JohnnieB's sleeper build - Part-3

[JohnnieB]

Originally Posted by yurtle

I figured it was an inductor, and would give off pulses. I didn't measure anything on AC or DC setting. I'll try again with my Wavetek, which does inductance.

How would a Hall effect sensor work? Do I need to feed it with a power source?

A Hall Effect sensor needs power to work. Basically, power is applied to the X-axis of a crystal and the current flow through the Y-axis is proportional to the magnetic flux density impinged on the crystal. With post-processing and calibration, they can be used for all sorts of things.

DC amp probes, magnetic field strength meters, position sensors and pulse generators for tachometers/speedometers.

Originally Posted by yurtle

Here's a pic, if that helps to identify sensor type.

Can't see the number of wires. If it is only two, it is an inductor type pickup coil. If three (or more) it is probably a Hall Effect device.

[yurtle]

You need a NIXIE readout for it.

[JohnnieB]

Originally Posted by yurtle

You need a NIXIE readout for it.

About all NIXIE readouts are useful for these days is load testing battery packs.

[yurtle]

I give up. I must not be getting a good connection. It's only two wires.