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6 Simple transistor | police | ambulance Siren (audio alarm) circuits
Make police siren circuit using 555 timer, transistors and op-amp Siren kong transistors Siren generator using ic um3561
6 simple transistor
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POLICE SIREN - Basic_Circuit - Circuit Diagram - SeekIC.com
6 Simple transistor | police | ambulance Siren (audio alarm) circuits
Siren Generator using IC UM3561
