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Sound operated Switch

 

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Parts List

IC1-NE555 Timer

IC2-CD-4017 Decade Counter

T1-BC-148 (NPN Type)

T2,T4-BEL-187 (NPN Type)

D1,D2-IN4001

R1-10K

R2-1.2M

R3-2.2K

R4-150K

R5-220K

R6-10K

R7-R9-100 ohm

C1,C2-0.1 mfd/16V

C3-4.7mfd/16V

C4-0.01mfd/16V

C5-1000 mfd/16V

MIC-Condenser Microphone

LED-Red,Green,Yellow.

Power Supply-6V DC

Clap operated Switch