Hall voltage changes with changes in magnetic field strength, the stronger the magnetic field sensor types, the higher the voltage, the weaker the magnetic field, the lower the voltage. Hall voltage value is small, typically only a few millivolts, but amplified by the integrated circuit, which can make the output voltage is amplified to a sufficiently strong signal. Hall-effect sensor IC from Ruoshi need to mechanically change the magnetic field strength. The method is shown below with a rotating impeller flux as a control switch, when the impeller blades in the air gap between the magnet and the Hall IC, the magnetic field deviation integrated on-chip, the Hall voltage disappears. Thus, the change in output voltage of the Hall IC, a position sensor can be shown the impeller drive shaft free, use of this principle, can be an integrated circuit chip with the Hall effect sensor ignition timing. Hall-effect sensors are passive sensors sensor prices, which have external power supply to work, a feature that enables it to detect low speed functioning. Exhaust gas temperature sensor: the exhaust gas temperature sensor for measuring the top of the compressor discharge temperature, B constant value of 3950K ± 3% sensors, the reference resistance is 90 ℃ corresponding resistance 5KΩ ± 3%. Module temperature sensors: a temperature sensor for measuring the frequency conversion module module (IGBT or IPM) temperature, with the temperature sensor model is 602F-3500F, the reference resistance is 25 ℃ corresponding resistor 6KΩ ± 1%. Several typical temperature corresponding resistance are: -10 ℃ → (25.897─28.623) KΩ; 0 ℃ → (16.3248─17.7164) KΩ; 50 ℃ → (2.3262─2.5153) KΩ; 90 ℃ → (0.6671─0.7565) KΩ. Sensor principle, Zhejiang sensors, sensor Xinfeng Xinfeng by Xinxiang purification technology Limited. Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) strong, credible, Xinxiang in Henan sensor industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead Xinfeng innovative ideas into the brilliant and you work for a better future!