Heat Sensor Circuit And Working Operation

Remove the relay and retest the circuit.

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. The principle of operation of heat detector circuit. The usage of the heat sensor circuit is inside your pc or in your kitchen.

If the o 2 sensor heater circuit s negative wire goes directly to ground look for a short to power problem. The o 2 sensor s heater circuit is controlled in one of two ways. When the set value of the temperature is high then it is indicated with the help of a glowing led. Usually the heater circuit in this case is controlled by a relay.

Light sensor circuit working operation. 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. You also note that before start testing the circuit first set the variable resistor. We can also use buzzer in place to led.

A simple heat detector circuit is shown in the figure that can be used as a heat sensor. The main property of a heat sensor is to sense the heat which is present around the sensor.