File talk:PC-Speaker IMG 9311-9312.JPG
Tiny PC speakers are NOT piezo.
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The depicted type of small PC speaker is moving-iron, not piezo. I.e. it functions like a traditional telephone receiver or earphone, containing a steel diaphragem attracted by a magnetic ring and a fixed solenoid (coil) in the center, which varies the intensity of the static magnetic field to make it move. While a piezo would have infinite DC resistance (like a capacitor), the standard tiny PC speaker still has 8 Ohm which proves the presence of a coil. User:CYBERYOGI =CO=Windler 92.193.120.28 (talk) 05:35, 28 November 2020 (UTC)
