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Drawing, Microphone, Measurement circuit – BeStar BCM9745OLF-62 User Manual

Page 3: Filter, C:1μf, Terminal1 "+" terminal2, Shield case ecm unit, Fet impedance converter

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2. Drawing

BCM9745OLF-62

★Angular Response

BCM9745OLF-62

Microphone

徐金国

Shield Case

ECM unit

C2
33pF

C1

10pF

FET impedance

Converter

3. Measurement Circuit:

GND

Terminal 2

Output

Power Supply 2.0V

RL=2.2K

Terminal 1

C:1μF

Page:2 of 5

DRG NO: B/TEM01.100B

王丽娟

徐金国

05.06.14

A

B

08.03.06

李毕佳

张秀琴

Terminal1 "+"

Terminal2 "-"

filter