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Acoustic Components
Electret microhone capsule
1
2
3
4
Measuring circu
it
(Test Condition Vs=4.5V RL=2
.2KΩ Ta=20
℃
)
OUTPUT
+Vs
C
ECM
unit
Shield case
converter
FET impedance
Term.1
Term.2
Ground
RL
C
1
C
2
1
...
2
3
4