What is the purpose fo the capacitor in the following circuit?
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The capacitor is to stabilize the supply voltage for the Melody IC. It allows the supply to stay steady at sudden current draws.
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\$\begingroup\$ Like this en.wikipedia.org/wiki/…? \$\endgroup\$– perenciaCommented Mar 22, 2020 at 12:49
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\$\begingroup\$ Yes, exactly a decoupling capacitor :) \$\endgroup\$ Commented Mar 22, 2020 at 12:55