Temperature variable voltage dividers can easily be made with a thermistor and fixed resistor.
Subscribe! https://www.youtube.com/electronzap and check out my latest youtube playlist at Short learning basic electronic circuit tutorials for beginners
Become a Patron! Donations help a lot!
https://www.amazon.com/shop/electronzapdotcom As an Amazon associate, I earn from qualifying purchases.
Kit that has everything you need to learn basic electronics and Arduino.
More heat leads to a lower resistance for a NTC thermistor, whereas a PTC thermistor has a higher resistance as heat goes up.
The thermistor voltage divider output voltage will drift more towards the side of the supply that the NTC thermistor is connected to.
I simply use this circuit to touch the NTC thermistor to a large heated resistor in the video. Any heated/cooled item can be used in place of the lone resistor.
My NTC thermistor is close to 10KΩ at room temperature. So dividing the supply voltage with a 10K resistor gives about half supply voltage at room temperature.
Voltage goes up with heat and down with cold in relationship to room temperature in the circuit shown.
- Brief DPDT relay component introduction – Double pole double throw
- Brief switch based NOT gate circuit – Logic inverter
- Quick NPN BJT switch circuit – Bipolar Junction Transistor
- Quick single switch controlled alternating flashing LEDs circuit
- Brief PNP BJT switch circuit – Bipolar Junction Transistor
- Brief 555 bistable mode flip flop alternating LEDs circuit
- Brief 555 timer monostable one shot mode circuit
- Brief 555 timer astable multivibrator mode circuit
- Brief 555 Schmitt trigger logic inverter
- Information on this site is not guaranteed to be accurate. Always consult the manufacturer info/datasheet of parts you use. Research the proper safety precautions for everything you do.