. The Bell System technical journal . f these will be referred to as the grid-bias circuit and the secondas the compensator-relay circuit. The grid-bias circuit consists essentially of a condenser C shunted bya high resistance R^ in series with a biasing battery Eq of fixed voltage,the secondary of the interstage transformer T, and the grid-filamentterminals of the detector tube V. This arrangement functions to keepthe effective grid-filament voltage due to the signals nearly constant,irrespective of their magnitude, by setting up a voltage on the condenserwhich adds algebraically to the grid-
. The Bell System technical journal . f these will be referred to as the grid-bias circuit and the secondas the compensator-relay circuit. The grid-bias circuit consists essentially of a condenser C shunted bya high resistance R^ in series with a biasing battery Eq of fixed voltage,the secondary of the interstage transformer T, and the grid-filamentterminals of the detector tube V. This arrangement functions to keepthe effective grid-filament voltage due to the signals nearly constant,irrespective of their magnitude, by setting up a voltage on the condenserwhich adds algebraically to the grid-bias battery and whose magnitude * By a multi-section telegraph circuit is meant a connection made up of 2 or moretelegraph lines in tandem with mechanical repetition between them. ADVANCES IN CARRIER TELEGRAPH TRANSMISSION 173 is automatically adjusted to be proportional to that of the incomingsignals. At any instant the actual voltage between filament and grid istherefore equal to the algebraic sum of (1) the fixed bias voltage Eo;. 130 VOLTS+1 -; POLAR I I RELAY VOLTS — VOLTS GRID-BIASCIRCUIT ) COMPENSATORr RELAY— (POLAR) -=-Ec
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
