I'm new in this site
And sorry for my english language..
I need a circuit for my little oven.
I use an incandescent bulb (4x100W) for heating, and I want make a dimmer circuit to change output using a temperature sensor (ptc or ntc).
I have an AC Light Dimmer I want to modify. I want to change the potentiometer to ptc but I can't find a 470k ptc…
What are your ideas for it?
Can I use this circuit?
With PIC16F88
Best Answer
Here's an example citcuit for using a thermistor & PWM controller (you could hack a dc/dc converter controller to do the job) as a thermostat to run your lights. The xfmr is to drop your AC mains voltage down to whatever supply voltage your MCU needs (a wall-wart would work, as long as your GND isn't isolated).