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Security System Switcher

Security System Switcher

16

12

15

10

13

IC2(B)

CD4538

11

+

4

8

2

3

1

5

8

IC1

LMC555

7

T

R

Vcc

DIP

GND

3

4

1

7

5

IC2(A)

CD4538

2

8

+

+

R1

10K

R2

1M

R3

3.3K

R4

10K

R5

10K

VR1

2.2M

R7

100K

C5

47μ

25V

S1

TRIGGER

SELECT

C3

2.2μ

T1

BC547

R5

100K

C1

100n

COND.

MIC

VR2

2.2M

R8

100K

C6

220μ

25V

R9

4K

T2

BC547

RL1

POWER

SUPPLY

R10

1K

LED1

D3

1N4007

+5V

GND

C2

100n

D1

D2

N/O

N/C

D1-D2 = 1N4148

RL1- 5V, 1C/O RELAY

SECURITY

SWITCH

J1

EXT

S1 = SPDT SWITCH

C4

0.01P

J1 SOCKET IS USED FOR EXTERNAL TRIGGER

Security System Switcher

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publish time: 2020-09-24
Circuit Everyday

Audio signals can be used as an input form to control any security system. For example, an automatic security camera can be configured to respond to a knock on the door. The operation makes the safety system automatically open. It uses sensors to detect intruders and provides a 5V regulated DC power supply to power the circuit.

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