Constituting simple LM3915 audio power meter circuit |
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Constituting simple LM3915 audio power meter circuit diagram Note: If the internal resistance of 4 speaker when, Rx take 10k If the internal resistance 8 speaker when, Rx take
18k speaker if the internal resistance 16 when, Rx take 30k Levin show a use of such IC AC input signal amplitude more sophisticated method is to use a half-wave AC signal converter will be changed to a DC signal, and then the DC signal is then fed to the input of the IC.
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