I need adjustable frequencies and decibel circuit

clubmed7 · 2009-09-11T07:10:46+00:00

hello everyone.. can show me the frequencies and decibel circuit that build with 555timer or other component that produce tone connected to earphone with battery 9V supply.. i gonna die thinking this circuit.. please help me..

I need adjustable frequencies and decibel circuit

clubmed7

Member

Updated: Oct 26, 2024

Views: 893

hello everyone..
can show me the frequencies and decibel circuit that build with 555timer or other component that produce tone connected to earphone with battery 9V supply..
i gonna die thinking this circuit..
please help me..

0

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