Infrared electric curtain control circuit
Source: InternetPublisher:傻阿乐 Keywords: control circuit electric curtain Updated: 2020/04/22
Working principle of the circuit: When any button of the remote control is pressed, the remote control emits a
series of infrared pulse signals. The infrared integrated receiver A amplifies and shapes this signal, and then
amplifies and outputs positive pulses through VT to trigger a D of CD4013. The flip-flop is connected into a monostable
flip-flop, when CP. After receiving the rising edge signal of VT output, due to D. is high level ,
making Q. goes high and charges cz through R2. When the voltage of C: is charged to the reset
terminal and the voltage is transferred , Q. Reset to low level . Monostable circuit time constant￡=
0. 7R2·C2.
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