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Four Tone Siren | Circuiteasy
Simple, low component count tone generator. It can be adapted to create a morse code circuit, by adding a switch to the o… | Circuit, Electronics circuit, Generator
555 Tone Generator (8 ohm speaker) circuit diagram and instructions
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Tone Generator Circuits under Repository-circuits -37295- : Next.gr
transistors - How does this tone generator circuit work? - Electrical Engineering Stack Exchange
Tone generator/Bird sound generator circuit - Electronic Projects Design/Ideas - Electronics-Lab.com Community
555 Timer Sound Generator
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