Hello,
I successfully built this simple 4-12 volts dc thermostat, I run it on 5 volts:
The NTC gets a lower resistance at higher temperatures this closes T1 which then opens T2 that lits the LED D1.
Instead of the LED I need an approx 4 to 5 volts output when 'hot' and approx 0,5 volts when cold. How would I go about adapting the circuit above for this?
It is important that the output voltage switches abruptly (like the LED does now) instead of a gradient sliding voltage.
Bonus question: I would love the 'cold' voltage output to be variable.
Many thanks!
I successfully built this simple 4-12 volts dc thermostat, I run it on 5 volts:
The NTC gets a lower resistance at higher temperatures this closes T1 which then opens T2 that lits the LED D1.
Instead of the LED I need an approx 4 to 5 volts output when 'hot' and approx 0,5 volts when cold. How would I go about adapting the circuit above for this?
It is important that the output voltage switches abruptly (like the LED does now) instead of a gradient sliding voltage.
Bonus question: I would love the 'cold' voltage output to be variable.
Many thanks!