This circuit can measure temperatures outside of kilometers. When the temperature is -55~+100°C, the output voltage of the circuit changes with the law of 100mV/°C, and the output is -5.5~+10V. The temperature measurement component of the circuit adopts AD590, and the output current of the temperature change passes through both sides of the shielded line. The RC section filters out the interference and then flows through the 1KΩ resistor, producing a 1mV voltage applied to the input positive terminal of the amplifier. The AD590 directly outputs the absolute temperature. To read in Celsius, a voltage of 273.2mV is applied to the negative side of the amplifier. This voltage is generated by the LM1403 via resistor divider. In practical applications, the shielded wire can only be grounded at one end. If both ends are grounded at the same time, a noise current string will be formed to the core wire to cause interference.
Storage Battery,Auto Battery,Car Battery,Autocraft Battery
SUZHOU DEVELPOWER ENERGY EQUIPMENT CO.,LTD , https://www.fisoph-power.com