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Why are their changes in frequency when the volume is adjusted during sound play?

April 26, 2017Adjusted changes Frequency play sound volume

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Why are their changes in frequency when the volume is adjusted during sound play?

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• When batteries are used for an extended period their input resistance increases and output voltage will reduce in magnitude. This may cause some variations in the operation frequency of the oscillation circuit within the device. Changing the batteries will of course resolve this problem. • The large AC currents required by the speaker driver circuits may also cause variations in the power supply. Connecting a suitable electrolytic capacitor, such as 47µf, between the power supply lines will help to resolve this problem.