Triple-Mode Tone Generator
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Triple-Mode Tone Generator

14

2

IC1

LM556

7

7

1

13

5

10

12

8

9

4

DIS1

O/P1

Vcc

R1

DIS1

TH1

GND

O/P2

T2

TH2

R2

+

VR1

100K

R1

2.2K

R2

5K

LS1

0.5W

12V

T1

BC547

GND

C2

0.1μ

R5

220Ω

Vi

R3

100K

R4

5K

C1

4.7μ

25V

1

3

2

S1

S1 = 3-WAY ROTARY SWITCH

Triple-Mode Tone Generator

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publish time: 2020-09-18
Circuit Everyday

This is a simple circuit that can generate three different tones. You can use it as a call bell, anti-theft alarm or any other security alarm.

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