Electric fan setups

[Ivan141]

I just tried doing another reading of the sensor with water out of a water cooker. I got a max reading of 180 ohms from it. It is supposed to switch around 95 degree's I think, so that's hard to test using water that isnt boiling at the moment of measuring. Anyway, 180 would give a currect of about 50mA, It's a shame I dont have a labsupply to test the operation of the relay at this current. The fact that the thermoswitch is not a hard on/off type switch also makes me think that there is a need for some sort of hysteresis, to avoid it switching like wild when the collant temp is around 90-100 degree's.