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PROGRAMMABLE HYBRID BALANCING TECHNIQUE FOR A TELEPHONE SET

IP.com Disclosure Number: IPCOM000007816D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2002-Apr-25

Publishing Venue

Motorola

Related People

Authors:
Patrick Clément

Abstract

In a telephone set, a common way to insure that the signal generated in the microphone does not produce any signal in the earphone is achieved by taking the earphone signal between the centre points of a bridge configuration. This bridge is formed by the line impedance Z,, by an hybrid balancing irnped- ante Z,, and by resistors R, and R, according to Figure 1.