Yes i used to be a hand model
I am attempting to repair a old STW sensor from my boat. i thought it had a magnetic switch as when i measure the paddle spinning i would get beeps out of my meter in diode mode.
The paddle has 2 magnets in it with opposing polesĀ and is mounted in a though hull fitting.
with a black and red wire leaving the though hull.
today i decide to test for ac. after looking at the signet site when i spin it i get an ac voltage.
I assume the frequency of the signal equals the rpm of the paddles * 2
I don't have a scope.
Resistance is about 1.8K
flicking it with my finger i get about 10V AC max
How should I read this device?
What is inside the though hull a coil?