Simple audio power meter circuit diagram composed of LM3915

Published:2011/5/6 3:26:00 Author:Ecco | Keyword: Simple , audio power meter | From:SeekIC

Simple audio power meter circuit diagram composed of LM3915 Note: If the internal resistance of speaker is 4Ω, Rx takeS 10kΩ; the internal resistance is 8Ω, Rx takes 18kΩ, internal resistance is 16Ω, Rx is 30kΩ The more perfect way of this IC showing AC signal amplitude is using half-wave AC signal converter to change the DC signal, and then the DC signal is sent to the IC's input.



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