Connection and powering device for a telephone transceiver

Abstract

Abstract The telephone transmitter is connected to the line by a circuit with relay 20 which can also provide the connection for a telephone set 12. The relay 20 comprises two coils 21 and 22. Two bridges 31 and 32 are connected to the input and to the output respectively of the relay 20. Two transistors, 41 and 42, powered respectively via the bridges 31 and 32, allow actuation of the control coils 21 and 22 of the relay. The bridge 31 also provides standby powering of a collection of transmitters 90 having microprocessors. The bridge 32 also powers, via a transistor 60 for controlling line seizure, a current generator with transistors 70 which provides the powering of reception 81 and modulation 82 amplifiers, as well as the powering of the collection 90. <IMAGE>

Inventors

• 👤 Eric Tholozan
• 👤 Christian Hourbrack

Bibliographic Details