According to the working environment temperature changes, physical deformation occurs inside the switch, resulting in some of the special effects of temperature table, turned on or off to produce a series of automatic control action elements, called temperature control switch, also called temperature protection or temperature controller, referred to the thermostat. Or by temperature protection the temperature reached a temperature controller, temperature controller sends the switching commands to control the operation of the equipment in order to achieve the desired temperature and energy savings. In air conditioning, the temperature controller is a temperature of air-conditioned room controlled electrical switching apparatus. Temperature controller controlled air conditioning in the room temperature range is generally 18 ℃ ~ 28 ℃. Window air-conditioning temperature controller is based on common principles of pressure to push through and break contacts. Its structure consists of a bellows, thermal package (test tube), eccentric, micro-switches and other components in a sealed sensor system and a signal power transfer system. Action role vapor pressure bellows in the spring, the spring will be controlled by the control panel knob pointer temperature controller, capillary suction on the room air conditioner air outlet, indoor cycling return air temperature from reaction. When the temperature rises to a temperature at which it is set, and the capillary temperature sensing bellows gas expansion agent, so that elongation of the bellows and against the spring force of the switch contact connected, then operation of the compressor, the refrigeration system, until the room temperature When they fell to the set temperature, thermal package gas contraction, contraction and spring bellows act together, will switch to the off position, the motor circuit cut off the compressor. In this repetitive operation, so as to control the room temperature. Electronic electronic temperature controller (resistance) is the use of resistance temperature measurement method, commonly used platinum wire, copper, tungsten, and a semiconductor (thermistor) for measuring resistor, the resistors have their advantages and disadvantages. Most home air conditioning is a thermistor sensor. Thermistor temperature controller is based on the principle of a Wheatstone bridge made of intelligent temperature controller, (left) is a Wheatstone bridge. In BD ends connected to the power E, according to Kirchhoff's law, when the bridge resistors R1 × R4 = R2 × R3, the potential of the two points A and C are equal, no current flows between the output terminals A and C the size of the thermistor impedance of R1 with increasing ambient temperature or lower thermostat switch down and change, so that the destruction of the balance sheet mold temperature, output current between AC. Therefore, in forming the thermostat can easily be done by selecting the appropriate thermistor to change the temperature adjustment range and operating temperature. Ch102 temperature controller temperature table _ _ Jiangsu gifted Litas stand upright by Changzhou gifted Litas electromechanical Limited. Changzhou Li gifted Litas Electrical Co., Ltd. (www.abc.com) strong, credible, in Changzhou, Jiangsu display instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead stand gifted Litas electromechanical and you hand into the brilliant, for a better future!