Heat Sensor Circuit And Working Operation

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

Heat sensor circuit and working operation.

Light sensor circuit working operation. In this heat detector circuit diagram a potential divider circuit is formed with a series connection of thermistor and 100 ohms resistance. 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. The principle of operation of heat detector circuit.

We can also use buzzer in place to 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. First is the positively controlled type of circuit. You also note that before start testing the circuit first set the variable resistor.

Usually the heater circuit in this case is controlled by a relay. 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. Remove the relay and retest the circuit.

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