GB902958A - Improvements relating to power supply arrangements - Google Patents

Improvements relating to power supply arrangements

Info

Publication number
GB902958A
GB902958A GB1223762A GB1223762A GB902958A GB 902958 A GB902958 A GB 902958A GB 1223762 A GB1223762 A GB 1223762A GB 1223762 A GB1223762 A GB 1223762A GB 902958 A GB902958 A GB 902958A
Authority
GB
United Kingdom
Prior art keywords
voltage
output
rectifier
current
transductor
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
GB1223762A
Inventor
Kenneth Gordon King
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.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
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 Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Priority to GB1223762A priority Critical patent/GB902958A/en
Publication of GB902958A publication Critical patent/GB902958A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/36—Repeater circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Rectifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

902,958. Automatic current and voltage control systems. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. Oct. 16, 1958 [Oct. 16, 1957], No. 12237/62. Divided out of 902,957. Class 38 (4). A telephone cable is supplied from both ends by rectifier sets which are arranged to normally supply a constant current provided the output voltage does not rise above a set value. The two characteristics therefore intersect, Fig. 9 (not shown), so that the two sets divide the total voltage between them. Each set is basically as shown in Specification 902,957, but the magnetic current discriminator D, which controls the output current, is connected in series with the D.C. terminals of a bridge rectifier AM5, the A.C. energization of which is controlled by a transductor 21 in accordance with the output voltage of the main rectifier. The output of the transductor thus rises with output voltage and is arranged to be larger than the cable current through rectifier AM5 when the voltage reaches its limiting value. Thereafter the discriminator D becomes energized via diode AM6 in accordance with the output voltage and the output is reduced to hold the voltage at this upper limit. The transductor 21 may be replaced by an impedance energized over an isolating transformer from the A.C. input to the main rectifier.
GB1223762A 1957-10-16 1957-10-16 Improvements relating to power supply arrangements Expired GB902958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1223762A GB902958A (en) 1957-10-16 1957-10-16 Improvements relating to power supply arrangements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1223762A GB902958A (en) 1957-10-16 1957-10-16 Improvements relating to power supply arrangements

Publications (1)

Publication Number Publication Date
GB902958A true GB902958A (en) 1962-08-09

Family

ID=10000894

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1223762A Expired GB902958A (en) 1957-10-16 1957-10-16 Improvements relating to power supply arrangements

Country Status (1)

Country Link
GB (1) GB902958A (en)

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