new switch circuit of door light

Published:2011/8/20 4:16:00 Author: | Keyword: switch, door light | From:SeekIC

Light switch outside the door is often turned on,turned off by someone,and it is easy to damage.There is a new door light switch. This is a percussive door light switch, and has the role of the doorbell. Circuit is shown as picture, and it is mainly formed by the percussion and detection circuit, door light trigger and delay control circuit, the doorbell circuit and power supply circuit.F1 ~ F4 adopt CD4093 digital integrated circuits. Music IC adopts KD-156 model. VT1, VT2 adopt SC9014 transistor; VT3 uses SC9013 transistor; VT4 uses 2SC9012; VT5 uses 2SC8050.



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Sensor_Circuit/Magnetic_Sensor/new_switch_circuit_of_door_light.html

Print this Page | Comments | Reading(3)