Heat Sensor Circuit And Working Operation

Working of the circuit is simple when there is heat or increase in temperature to the level where it crosses the threshold set by pot then the collector current increase and led starts illuminating slowly.

Heat sensor circuit and working operation.

Remove the relay and retest the circuit. The usage of the heat sensor circuit is inside your pc or in your kitchen. We can also use buzzer in place to led. A 230v ac supply is provided to the load in this case the load is represented with a lamp.

The o 2 sensor s heater circuit is controlled in one of two ways. Light sensor circuit working operation. You also note that before start testing the circuit first set the variable resistor. First is the positively controlled type of circuit.

Heat sensor circuit and working operation. When the set value of the temperature is high then it is indicated with the help of a glowing led. The principle of operation of heat detector circuit. The main property of a heat sensor is to sense the heat which is present around the sensor.

If the o 2 sensor heater circuit s negative wire goes directly to ground look for a short to power problem. A simple heat detector circuit is shown in the figure that can be used as a heat sensor.