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Anti-Theft Alarm

Anti-Theft Alarm

+COMIC1780513OUT2IN16142IC1CD40273758Q2J26Q2VccCLR2K2S2GND++VR110KPRESETC20.1μC10.001μCOND.MICR2470KR4100ΩR6100KR8100ΩR9100KT2BC547C347μ25VT1BC547R1470KR31KR5470KR71KR101KLED1R111KC40.01μT3BC548PZ1PIEZOBUZZERD11N4007230V AC50HZX1 = 230V AC PRIMARY TO12V-0-12V, 250mASECONDARY TRANSFORMERR12 = DEPENDS ON CHARGING CURRENTX1D21N4007C5470μ35VS2ON/OFFSWITCHR1247Ω5WD31N400712VBATT.C625VS1PUSHTO ONSWITCHAnti-Theft Alarm
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publish time: 2020-10-26
Circuit Everyday

You can use this circuit to prevent theft.It alerts you when someone tries to enter your home or office by knocking on the door, pushing the door or knocking.The sensor element is a capacitive microphone, which is mounted on the entrance door of the house, preferably on the door frame.Knocking, pushing, or knocking on the door can make some noise.This is detected by the microphone and fed to the preamplifier section of the circuit, which is connected to the buzzer via a trigger.Therefore, when someone knocks or knocks, the buzzer will go off.

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