GB1379061A - Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals - Google Patents

Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals

Info

Publication number
GB1379061A
GB1379061A GB3361272A GB3361272A GB1379061A GB 1379061 A GB1379061 A GB 1379061A GB 3361272 A GB3361272 A GB 3361272A GB 3361272 A GB3361272 A GB 3361272A GB 1379061 A GB1379061 A GB 1379061A
Authority
GB
United Kingdom
Prior art keywords
current signals
transistor
citcuit
double
arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3361272A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GERAETEWERK KARL MARX STADT IM
Original Assignee
GERAETEWERK KARL MARX STADT IM
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GERAETEWERK KARL MARX STADT IM filed Critical GERAETEWERK KARL MARX STADT IM
Priority to GB3361272A priority Critical patent/GB1379061A/en
Publication of GB1379061A publication Critical patent/GB1379061A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/66—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will
    • H03K17/665—Switching arrangements for passing the current in either direction at will; Switching arrangements for reversing the current at will connected to one load terminal only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/20—Repeater circuits; Relay circuits
    • H04L25/22—Repeaters for converting two wires to four wires; Repeaters for converting single current to double current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc-Dc Converters (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1379061 Telegraph switching circuits GERATEWERK KARL - MARX - STADT IM KOMBINAT VEB MESSGERATEWERK ZWONITZ VEB 18 July 1972 33612/72 Headings H3T and H4P A single to double-current telegraph signal converter comprises two transistors connected by a diode and in series between the input line and between the terminals of a centre tapped battery, one transistor T1 being controlled by the input signal and the other by the voltage across the diode, whereby one or other transistor conducts depending upon whether a contact SK is open or closed. In addition a variable resistor is connected across each emitter-base path, the base of the other transistor T2 being also connected to a separate source of voltage. The resistors control the drive to the transistors. Fi is an input filter and an inductor Dr serves to provide compensation when single current operation is used.
GB3361272A 1972-07-18 1972-07-18 Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals Expired GB1379061A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3361272A GB1379061A (en) 1972-07-18 1972-07-18 Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3361272A GB1379061A (en) 1972-07-18 1972-07-18 Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals

Publications (1)

Publication Number Publication Date
GB1379061A true GB1379061A (en) 1975-01-02

Family

ID=10355179

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3361272A Expired GB1379061A (en) 1972-07-18 1972-07-18 Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals

Country Status (1)

Country Link
GB (1) GB1379061A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289177A (en) * 1994-04-29 1995-11-08 Plessey Semiconductors Ltd Receiver arrangement for receiving a current pulse

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2289177A (en) * 1994-04-29 1995-11-08 Plessey Semiconductors Ltd Receiver arrangement for receiving a current pulse
US5661754A (en) * 1994-04-29 1997-08-26 Plessey Semiconductors Limted Receiver arrangement
GB2289177B (en) * 1994-04-29 1998-04-15 Plessey Semiconductors Ltd Receiver arrangement

Similar Documents

Publication Publication Date Title
GB1410606A (en) Signal selector circuit
GB1463103A (en) Switching circuits
ES471916A1 (en) Solenoid drive circuits
GB937294A (en) Improvements in bridge-type transistor converters
GB1379061A (en) Citcuit arrangement for use in telegraph apparatus for the conver sion of single current signals into double current signals
GB1274469A (en) A switching device
GB975520A (en) Improvements in or relating to electric gating circuits employing transistors
GB1409895A (en) Electrical switches
GB1323711A (en) Electrical networks
GB1063308A (en) Transistor switching circuits
GB989232A (en) Improvements in or relating to signalling circuits
GB1174085A (en) Amplifier
ES463977A1 (en) Electronic solid state switching device
ES449996A1 (en) Arrangement for producing pulse-shaped signals
FR2373194A1 (en) Transistor switch for ultrasonic array - includes series opposed transistors in each path shunted by diodes
GB1121477A (en) Transistor switch
GB1467065A (en) Dc voltage regenerating transformer coupling device
GB964664A (en) Improvements in or relating to electronic switches
GB1399524A (en) Alternating current amplitude responsive gating device
JPS5593320A (en) Switching unit
GB1437960A (en)
GB1231640A (en)
JPS5432259A (en) Complementary pair circuit of transistor
GB1471925A (en) Transmission line terminations
GB1048418A (en) Transistor switching circuit

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees