SIMPLE HEAT SWITCH CIRCUIT
Hello everyone,
Here we are discussing about a Simple Heat sensing or detecting circuit.
This circuit indicates you whenever it senses Temperature. The sensing is done by using a THERMISTOR of 110 ohms. The resistance of Thermistor reduces on increase in Temperature which makes the LED glow.
The circuit is powered by a 6V battery.
CIRCUIT DIAGRAM FOR HEAT DETECTOR
Components used:-
R1 THERMISTOR 110Ω
R2 100Ω
R3 3.3KΩ
Q1 Bc548 NPN
4 comments:
nice circuit. i have one question, in which temperature your circuit will glow the led ?
Thank You For Your comment......
I think the led will glow after 45 degree C.
@TITTU THOMAS
please can u tell me if i can use this circuit as a fever detector circuit? thanks
The Circuit is not capable to detect precise temperature......
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