The electronic thermostat is a controller with temperature regulation function designed and produced by circuit electronic technology, mainly used for temperature control of electric heating and plumbing. It has the characteristics of convenient operation and high control precision.
The electronic temperature controller (resistive type) is measured by the method of resistance temperature sensing. Generally, platinum wire, copper wire, tungsten wire and semiconductor (thermistor, etc.) are used as temperature measuring resistors. These resistors have their own advantages. point. Sensors for household air conditioners are mostly in thermistor type.
The thermistor thermostat is based on the Wheatstone bridge principle and is a Wheatstone bridge. Connect the power supply E to both ends of the BD. According to Kirchhoff's law, when the resistance of the bridge is R1×R4=R2×R3, the potentials of the two points A and C are equal, and no current flows between the output terminals A and C. The magnitude of the resistance R1 of the thermistor changes as the ambient temperature rises or falls, causing the balance to be broken and an output current between the ACs. Therefore, when the thermostat is constructed, the temperature adjustment range and the operating temperature can be easily changed by selecting an appropriate thermistor.
In our homes and some other places, on some of our devices that require temperature control, electronic thermostats have become very important equipment, which has helped us a lot in our lives, but we have a lot of consumption. I don't know much about electronic thermostats, so today I will introduce some of the working principles of our electronic thermostats.
Electronic thermostat
Electronic Thermostat Principle - Introduction to Electronic ThermostatThe electronic temperature controller (resistive type) is measured by the method of resistance temperature sensing. Generally, platinum wire, copper wire, tungsten wire and semiconductor (thermistor, etc.) are used as temperature measuring resistors. These resistors have their own advantages. point. Sensors for household air conditioners are mostly in thermistor type. The thermistor thermostat is based on the Wheatstone bridge principle and is a Wheatstone bridge.
Connect the power supply E to both ends of the BD. According to Kirchhoff's law, when the resistance of the bridge is R1×R4=R2×R3, the potentials of the two points A and C are equal, and no current flows between the output terminals A and C. The magnitude of the resistance R1 of the thermistor changes as the ambient temperature rises or falls, causing the balance to be broken and an output current between the ACs. Therefore, when the thermostat is constructed, the temperature adjustment range and the operating temperature can be easily changed by selecting an appropriate thermistor.
Electronic thermostat
Electronic thermostat principle - electronic thermostat classificationResistive thermostat and thermocouple thermostat. The components of the circuit system mainly include: temperature controller, thermal protector, main control switch, running capacitor, and operating capacitance of the fan motor. The role of the temperature controller is simply to control the start and stop of the compressor.
Electronic thermostat principle - electronic thermostat principleThe electronic temperature controller (resistive type) is measured by the method of resistance temperature sensing. Generally, platinum wire, copper wire, tungsten wire and semiconductor (thermistor, etc.) are used as temperature measuring resistors. These resistors have their own advantages. point. The sensors of the home air conditioner temperature controller are mostly of the thermistor type. The temperature range in the air-conditioned room controlled by the temperature controller is generally between 18 ° C and -28 ° C.
The common temperature controller for window air conditioners uses the principle of pressure to push the contacts on and off. The structure consists of a bellows, a temperature sensing package (test tube), an eccentric wheel, a micro switch, etc., a sealed induction system and a system for transmitting signal power. The temperature controller control method is generally divided into two types: one is controlled by the temperature change of the object to be cooled, and the vapor pressure type temperature controller is often used, and the other is controlled by the temperature difference of the object to be cooled, and is often used. Electronic temperature controller.
Electronic thermostat
The above is the introduction of some of the working principles of the electronic thermostat and the introduction of the basic situation, I hope you can refer to understand, in our future purchase of electronic thermostat, you can provide some reference, I believe we can help us buy Use it with a suitable electronic thermostat.
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