Experimental study on the DC response of parallel NTC thermistors to sensitive semiconductor bridge transducers
Hao Jin, Hui-yuan Niu, Wei Li Ren, Xiang-fei Ji, Li Wang, Huijun Li, Cheng-yuan An · Journal of Physics Conference Series · 2024
Abstract The application of parallel thermistor is an essential method for improving the critical fusing current of semiconductor bridge (SCB). In this paper, constant current power supply and infrared test system are employed to experimentally investigate the effect of parallel negative temperature coefficient (NTC)thermistor on the response of semiconductor bridge under various DC excitations. The test results demonstrate a comparison between the SCB (NTC-SCB) with negative temperature coefficient thermistor in parallel and the SCB without NTC. The temperature in the bridge region can be reduced by 68% with a more than one-fold increase in the critical fusing current. And the shunt effect of NTC thermistor is 34.4%-74.4%.