Gating network for time-sharing communication system

Abstract

Abstract A GATING NETWORK FOR INTERMITTENTLY CONNECTING A SIGNAL GENERATOR TO A LOAD, E.G. FOR USE IN A TIME-SHARING TELECOMMUNICATION SYSTEM, INCLUDES A NORMALLY BLOCKED PRIMARY BRIDGE CIRCUIT FORMED BY FOUR DIODES, OR BY THE EMITTER-BASE AND COLLECTOR-BASE CIRCUITS OF TWO COMPLEMENTARY TRANSISTORS CONNECTED IN TANDEM, WHOSE OUTPUT DIAGONAL IS IN SERIES WITH THE SIGNAL PATH AND WHOSE INPUT DIAGONAL IS CONNECTED BETWEEN INTERMEDIATE POINTS OF TWO NONADJOINING HIGH-RESISTANCE ARMS OF A SECOND BRIDGE CIRCUIT ALSO HAVING TWO LOW-RESISTANCE ARMS. ALL THE ARMS OF THE SECONDARY BRIDGE CIRCUIT INCLUDE DIODES HAVING THE SAME ORIENTATION WITH REFERENCE TO AN INPUT DIAGONAL OF THAT CIRCUIT WHICH IS CONNECTED ACROSS A SOURCE OF REVERSIBLE DC VOLTAGE, WHEN THE OUTPUT VOLTAGE OF THAT SOURCE IS OF A FIRST POLARITY, A CONDENSER CONNECTED ACROSS THE OUTPUT DIAGONAL OF THE SECONDARY BRIDGE IS CHARGED, WHEREAS UPON REVERSAL OF THAT VOLTAGE THE CONDENSER IS DISCHARGED THROUGH THE PRIMARY BRIDGE TO BIAS IT INTO A STATE OF CONDUCTIVITY.

Inventors

• 👤 Arnaldo Vicentini
• 👤 Demetrio Sonaglioni

Bibliographic Details