Transformerless hybrid circuit having direct powered line-side amplifiers

A telephone line-powered Data Access Arrangement (10) has amplifiers (15,27) therein directly powered from the telephone line without voltage regulators or filters. The amplifiers, such as the amplifier (15) driving an LED (40) in an optical coupler (14), draw a constant power supply current indepen...

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Bibliographic Details
Main Authors CWYNAR, DONALD THOMAS, LATURELL, DONALD RAYMOND
Format Patent
LanguageEnglish
French
German
Published 22.04.1998
Edition6
Subjects
AMPLIFIERS
BASIC ELECTRONIC CIRCUITRY
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
TRANSMISSION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
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