GB375705A - Improvements in and relating to electric valve circuits - Google Patents

Improvements in and relating to electric valve circuits

Info

Publication number
GB375705A
GB375705A GB35130/31A GB3513031A GB375705A GB 375705 A GB375705 A GB 375705A GB 35130/31 A GB35130/31 A GB 35130/31A GB 3513031 A GB3513031 A GB 3513031A GB 375705 A GB375705 A GB 375705A
Authority
GB
United Kingdom
Prior art keywords
source
voltage
frequency
circuit
grid
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
GB35130/31A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB375705A publication Critical patent/GB375705A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M7/15—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using discharge tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

375,705. Rectifying alternating current. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. -(Assignees of Boyajian, A. ; 55, Stratford Avenue, Pittsfield, Massachusetts, U.S.A.) Dec. 18, 1931, No. 35130. Convention date, Dec. 24, 1930. [Class 38 (ii).] In an arrangement for supplying rectified current from an A.C. source 11 to a load 10 through a grid-regulated valve 13 of the discontinuous control type, an additional source of A.C. 20 of higher frequency and similar voltage to that of the source 11 is connected across the valve in order that the voltage between the anode and cathode falls to zero (as indicated in Fig. 2) or to a sufficiently low value several times per cycle of the source 11 so that the grid may become effective to block the valve at various times during the positive half cycle of anode voltage. The grid control voltage is supplied through a transformer 14 and phase adjusting device 17. Filter circuits. 22, 23 and 24, 25 are provided in each A.C. circuit in order to prevent currents of one frequency flowing in the circuit of the other frequency, and a current limiting resistance 21 is provided in the circuit of the auxiliary frequency.
GB35130/31A 1930-12-24 1931-12-18 Improvements in and relating to electric valve circuits Expired GB375705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US375705XA 1930-12-24 1930-12-24

Publications (1)

Publication Number Publication Date
GB375705A true GB375705A (en) 1932-06-30

Family

ID=21895055

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35130/31A Expired GB375705A (en) 1930-12-24 1931-12-18 Improvements in and relating to electric valve circuits

Country Status (1)

Country Link
GB (1) GB375705A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742583C (en) * 1941-09-09 1943-12-07 Aeg Arrangement for interrupting a direct current circuit by means of controlled vapor or gas discharge paths
DE753708C (en) * 1937-04-15 1953-07-13 Wilhelm Dr-Ing Ziegenbein Method for facilitating the disconnection of a consumer from a power source

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE753708C (en) * 1937-04-15 1953-07-13 Wilhelm Dr-Ing Ziegenbein Method for facilitating the disconnection of a consumer from a power source
DE742583C (en) * 1941-09-09 1943-12-07 Aeg Arrangement for interrupting a direct current circuit by means of controlled vapor or gas discharge paths

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