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Continuity Tester With A Chirping Sound

Continuity Tester With A Chirping Sound

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16

14

IC1

CD4017

13

12

15

8

+VCC

CLK

ST

GND

R

CARRY

OUTPUT

S1

ON/OFF

SWITCH

9V

BATT.

R1

1M

METALLIC ROD (SENSOR)

6 CM

C2

10P

C4

0.1μ

R3

150Ω

R2

10K

T1

BC548

LED1

R4

470Ω

PZ1

PIEZO-

BUZZER

C1

10P

C3

16V

GND

Continuity Tester With A Chirping Sound

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0
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publish time: 2020-09-29
Circuit Everyday

Today, there will be a party at home. But you are busy detecting the malfunction of the decorative lights hanging on the border of the house. At the same time, you want to finish your work by night. But daylight makes it difficult to observe the neon bulb inside, and this circuit effectively alleviates this situation.

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