On 10/11/17 20:19, Andy Bennet wrote:
On 10/11/2017 20:01, JoeJoe wrote:
See he

http://tinypic.com/r/qsqp1z/9

Question is:Â* why would you want to put a variable resistor between Z
and Y, and not a fixed value one?

I could do this in my sleep years ago, honest...

Adjust the temperature at which the LED comes on?

I'd go with that. There's a thermistor below the variable resistor and
an LED triggered by the transistor.

Presumably some kind of overheat warning device (assuming PTC sensor)?.


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