Melody ICs?

Thread Starter

Vorador

Joined Oct 5, 2012
87
Hello everyone,

I was just wondering how melody ICs like UM66 produce music with just a constant DC supply as the input? The speaker needs to be fed some sort of pulsating current to produce some sound, so how does the IC achieve this even though it's input is not AC?

Thank you! :)
 

MrChips

Joined Oct 2, 2009
30,454
The supply voltage, DC or AC has nothing to do with the sound output.
Think of you smart phone or MP3 player. They are all powered by a battery supplying DC.
 

Alec_t

Joined Sep 17, 2013
14,206
The DC supply powers internal circuits which convert digital samples of a sound to pulses which are integrated to give an audio waveform.
 
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