Heat Sensor Circuit And Working Operation

Remove the relay and retest the circuit.

Heat sensor circuit and working operation.

You also note that before start testing the circuit first set the variable resistor. The usage of the heat sensor circuit is inside your pc or in your kitchen. The o 2 sensor s heater circuit is controlled in one of two ways. A simple heat detector circuit is shown in the figure that can be used as a heat sensor.

Heat sensor circuit and working operation. The main property of a heat sensor is to sense the heat which is present around the sensor. First is the positively controlled type of circuit. Usually the heater circuit in this case is controlled by a relay.

The principle of operation of heat detector circuit. The light sensor circuit is an electronic circuit designed using light sensor ldr darlington pair relay diode and resistors which are connected as shown in the light sensor circuit diagram. Light sensor circuit working operation. When the set value of the temperature is high then it is indicated with the help of a glowing led.

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. In this heat detector circuit diagram a potential divider circuit is formed with a series connection of thermistor and 100 ohms resistance.