With TWH9248 9249 an auto lighting

Posted on Nov 10, 2015

220V AC by Cl buck, VDI rectifier, VD2 regulator and filter capacitor C2, output stable 12V DC voltage for use module A2, Al through internal A2 6V regulator outputs in 6V DC v

With TWH9248 9249 an auto lighting
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oltage. Sensitive electrical resistor RG connected across TWH9249 gate control terminal R 6V voltage output terminal B, the circuit has an automatic light control function, the circuit will be blocked during the day does not work, H lamp is not lit, at night or when comparing light dark circuit that is able to lift the blockade restored to normal operation. When the body moves within the detection range, the module receives a microwave transmitter and the microwave echo reflected from the body compared to the more, the internal processing circuit by O terminal A2 output a delay signal to the solid state relay TAC108 turned on, the lamp H namely lit. As the human body or human remains absolutely motionless after the departure, after the delay signal lamp goes out. If people move back, the lamp H will continue to light up. Circuit potentiometer RP can be used to adjust the detection sensitivity.

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