Friday, July 17, 2020

Low cost temperature sensor




Low-cost temperature sensors can be achieved by using a diode or transistor (by shorting the Base and Collector). When constant current passes through the base-emitter junction it produces a voltage between the base and emitter (Vbe) that is a linear function of the absolute temperature. 
The overall forward voltage drop has a temperature coefficient of approximately 2 mV/°C. The semiconductor junction sensor’s voltage versus temperature is much more linear than that of a thermocouple or resistive temperature device (RTD). 

Low power Pushbutton ON/OFF Controller solution from Linear Technology

  All of the flexible timing circuitry required to debounce the on/off pushbutton is integrated within the LTC2950. For applications that ne...