New TDH98072 dedicated pyroelectric infrared sensor circuit diagram

Published:2011/5/16 3:13:00 Author:Ecco | Keyword: New , dedicated , pyroelectric , infrared , sensor | From:SeekIC

TDH98072 is a new pyroelectric infrared sensor specific devices. The output current of the circuit is high with PIR sensor input, and it can drive SCR, relay. In addition, the circuit uses CMOS process, the quiescent current is less than 1mA when it works. The control circuit composed of the circuit (such as burglar alarm, automatic lights, automatic valve) has the features of simple structure, easy adjustment, high reliability. 1. The shape and pin arrangement of TDH98072 are shown in Figure 1. Photoresistor should select bright resistor(bright environment in the resistance) being less than 100kΩ, the dark resistance is greater than 3.3MΩ,pyroelectric infrared probe PIR can choose any small pyroelectric probes (must bring lens, such as ANM1 type), the other component parameters are shown in the figure.



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