GB979814A - Improvements relating to phase shifting circuits - Google Patents

Improvements relating to phase shifting circuits

Info

Publication number
GB979814A
GB979814A GB3172661A GB3172661A GB979814A GB 979814 A GB979814 A GB 979814A GB 3172661 A GB3172661 A GB 3172661A GB 3172661 A GB3172661 A GB 3172661A GB 979814 A GB979814 A GB 979814A
Authority
GB
United Kingdom
Prior art keywords
phase
transistor
phase shifting
windings
arm
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
GB3172661A
Inventor
Derek Morris Embrey
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.)
ELECTRIC CONSTRUCTION CO
Original Assignee
ELECTRIC CONSTRUCTION CO
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 ELECTRIC CONSTRUCTION CO filed Critical ELECTRIC CONSTRUCTION CO
Priority to GB3172661A priority Critical patent/GB979814A/en
Publication of GB979814A publication Critical patent/GB979814A/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
    • H02M7/155—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 semiconductor devices only
    • H02M7/162—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 semiconductor devices only in a bridge configuration
    • H02M7/1623—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 semiconductor devices only in a bridge configuration with control circuit
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/16—Networks for phase shifting
    • H03H11/20—Two-port phase shifters providing an adjustable phase shift
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/16—Networks for phase shifting
    • H03H11/22—Networks for phase shifting providing two or more phase shifted output signals, e.g. n-phase output

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

979,814. Phase shifting. ELECTRIC CONSTRUCTION CO. Ltd. Aug. 17, 1962 [Sept. 4, 1961], No. 31726/61. Heading H2F. A phase shifting network comprises a bridge ABCD the arms CD, DB being equal resistors or inductors 26, 28, the arm BA being an inductor or capacitor, and the arm CA being resistive and comprising a full wave bridge of diodes 20 in series with a transistor 22. Output is derived across the diagonol DA on lines 12, 14, and by controlling the transistor by a signal on lines 24 the resistance of the arm CA and hence the phase shift may be varied. As shown, the inductors 26, 28 are the halves of a centre tapped secondary winding of an input transformer. In alternative arrangements the capacitor 16 may be replaced by an inductor, and the emitter and base connections of the transistor may be interchanged. The output at 12, 14 may feed a transformer having a centre tapped secondary winding, and may control a thyratron or S.C.R. As shown in Fig. 6, three similar circuits may be combined to provide phase shifting for all the phases of a three-phase supply by controlling a single common transistor. The pairs of windings 26, 28, 26<SP>1</SP>, 28<SP>1</SP>, 26<SP>11</SP>, 28<SP>11</SP>, may be windings on a three-phase transformer or windings of a three-phase generator.
GB3172661A 1961-09-04 1961-09-04 Improvements relating to phase shifting circuits Expired GB979814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3172661A GB979814A (en) 1961-09-04 1961-09-04 Improvements relating to phase shifting circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3172661A GB979814A (en) 1961-09-04 1961-09-04 Improvements relating to phase shifting circuits

Publications (1)

Publication Number Publication Date
GB979814A true GB979814A (en) 1965-01-06

Family

ID=10327466

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3172661A Expired GB979814A (en) 1961-09-04 1961-09-04 Improvements relating to phase shifting circuits

Country Status (1)

Country Link
GB (1) GB979814A (en)

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