Electret microphone with simplified electrical connections by pr

Details Electret microphone with simplified electrical connections by pr Electret microphone with simplified electrical connections by pr

1978-11-03

1980-02-12

Stellar, George G.

H04R 1904

Patent

active

041885139

ABSTRACT:
A telephone transmitter sub-assembly has an electret clamped between a pair of printed circuit boards. The electret conducting surface and printed circuit patterns on the boards have an overlapping arrangement at a planar junction. The arrangement connects a capacitor, of which the electret forms part, into an amplifying circuit.

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