MICROPHONE FOR TELEPHONE Russian patent published in 1994 - IPC

Abstract RU 2006183 C1

FIELD: instruments. SUBSTANCE: transducer is electrostatic with external polarization. In addition first and second capacitors, resistor and commutation element are introduced. Terminal of first capacitor is connected to one pole of amplifier power supply and to first terminal of commutation element. Second terminal of first capacitor is connected to one terminal of resistor and to second terminal of commutation element. Second terminal of resistor is connected to amplifier input and one electrode of transducer through second capacitor. Second electrode of transducer is connected to slide of commutation element and amplifier power supply. EFFECT: increased functional capabilities. 1 dwg

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RU 2 006 183 C1

Authors

Ehstrin E.S.

Bulatov V.S.

Smol'Nikov D.B.

Dates

1994-01-15—Published

1991-05-23—Filed