Unknown circular schematic symbol

Question

This is the symbol that I do not know what it means. The top trace leads to a polarized capacitor

Surely the complete circuit gives a clue that it's a microphone or at least an audio or vibration transducer? — Transistor, Mar 14 '22 at 12:30

vu2nan · Accepted Answer · 2022-03-14T15:41:02.907

18

It's the symbol for an electret microphone.

Here are the external and internal schematics.

edited Mar 14 '22 at 15:41

answered Mar 14 '22 at 11:30

vu2nan

1 Answers1