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Timer with Musical Alarm

Timer with Musical Alarm

GND

IC2

UM66

2

1

O/P

3

Vcc

9

3

11

12

8

Vcc

16

GND

IC1

CD4060

10

+

R5

1K

C1

0.1UF

C2

0.22UF

R2 2M2

VR1 1M

R3 56K

R4

1K

T1

BC547

ZD1

3.3V

Zener

C3

1UF

25V

R6

1K

T1

BC547

9V

BATT.

S1

ON/OFF

Switch

VR2

1K

LS1

8 Ohm,

0.5W

Speaker

R1

100

Ohm

PRESET

Timer with Musical Alarm

6
0
0
publish time: 2020-09-17
Circuit Everyday

This low-cost timer can be used to introduce a delay of one minute to two hours. When the time is up, music will sound.

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