Heat Sensor Circuit And Working Operation

The principle of operation of heat detector circuit.
Heat sensor circuit and working operation. The o 2 sensor s heater circuit is controlled in one of two ways. Heat sensor circuit and working operation. First is the positively controlled type of circuit. 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. 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. If the o 2 sensor heater circuit s negative wire goes directly to ground look for a short to power problem.
The main property of a heat sensor is to sense the heat which is present around the sensor. Usually the heater circuit in this case is controlled by a relay. A simple heat detector circuit is shown in the figure that can be used as a heat sensor. The usage of the heat sensor circuit is inside your pc or in your kitchen.
You also note that before start testing the circuit first set the variable resistor. In this heat detector circuit diagram a potential divider circuit is formed with a series connection of thermistor and 100 ohms resistance.