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Automatic Bathroom Light with Back-up Lamp

Automatic Bathroom Light with Back-up Lamp

COM

IC1

7812

1

3

OUT

2

IN

11

1

9

12

8

16

IC2

CD4060

10

6

7

4

3

6

2

1

5

8

IC3

NE555

}

+

+

+

+

+

C1

1000μ

35V

230V AC

50HZ

S1

ON/OFFF

SWITCH

BULB*

OR

CFL

CONTACT OF

RELAY RL1

N/O

C4

0.1μ

C5

0.1μ

C2

0.1μ

R3

10M

R4, 2.2M

C3, 0.2μ

MR

Q6

Q11

R6

100Ω

LED2

G

C7

470μ

25V

D5

R5

220Ω

LED1

BATT.

9V

C9

470μ

25V

R8

10K

S2

R7

56Ω

D6

D7

VR1

1M

OUTPUT

R9

100Ω

0.5W

LED3

LED4

C10

0.01μ

LED3, LED4 = WHITE LEDs

RL1 = 12V, 200Ω

1C/O RELAY

D5-D7 = 1N4001

S2 = ON/OFF SWITCH

LED3-LED4 = WHITE LED

230V, 25 EATT BULB OR QR 11 WATT CFL TUBE

X1 = 230V AC

PRIMARY TO

15V AC, 250mA

SECONDARY

TRANSFORMER

R1

68K

NEON

BULB

X1

N/C

D1-D4 = 1N4007

D1

D3

D4

D2

R2

100K

RL1

K

A

SCR

BT

169

C6

100μ

25V

C8

4.7μ

25V

BT

169

BT

169

1

2

3

K

G

A

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Automatic Bathroom Light with Back-up Lamp

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publish time: 2020-09-25
Circuit Everyday

Sometimes we forget to turn off the lights in the bathroom, and we haven't been noticed for a long time. This circuit solves the problem of wasting electricity by turning off the bulb. The lamp will automatically turn off after 30 minutes of power-on, and the accompanying spare LED light will be on for three minutes. This function is very useful, especially in the bath at night.

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