GB904246A - Improvements in and relating to electric circuit arrangements incorporating semiconductor controlled rectifiers - Google Patents

Improvements in and relating to electric circuit arrangements incorporating semiconductor controlled rectifiers

Info

Publication number
GB904246A
GB904246A GB10315/60A GB1031560A GB904246A GB 904246 A GB904246 A GB 904246A GB 10315/60 A GB10315/60 A GB 10315/60A GB 1031560 A GB1031560 A GB 1031560A GB 904246 A GB904246 A GB 904246A
Authority
GB
United Kingdom
Prior art keywords
resistor
variable
firing
phase
relating
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
GB10315/60A
Inventor
Albert Edmund Jackets
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Publication of GB904246A publication Critical patent/GB904246A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D15/00—Manufacture of resin soap or soaps derived from naphthenic acids; Compositions
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/14—Carboxylic acids; Derivatives thereof
    • 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
    • H02M7/1555—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 with control circuit
    • 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
    • H03K17/72—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 having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/725—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 having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for ac voltages or currents

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)
  • Rectifiers (AREA)

Abstract

904,246. Rectifying; phase shifting. GENERAL ELECTRIC CO. Ltd. March 16, 1961 [March 23, 1960], No. 10315/60. Class 38 (2). In a circuit comprising a semi-conductorcontrolled rectifier 1 in series with a load 2 and an A.C. source 4 firing pulses are derived from a phase-shifting network including a resistive and a reactive component, one of which is variable to vary the phase and hence instant of firing of the rectifier. As shown, a phaseshifting bridge has two arms comprising high value resistors 8, 9, and two low impedance arms, namely a capacitor 6 and a variable resistor 7. The diagonal comprises the primary winding of a transformer having a saturable core and a secondary winding to provide the pulses. Variation of resistor 7 controls the firing instant over 180 degrees. A small resistor 10 minimizes resonance effects when the resistance 7 is zero. In an alternative arrangement the resistive and reactive components are connected to ends of a centre-tapped transformer and a single high value resistor is used. The reactive component may be inductive and may be variable.
GB10315/60A 1960-03-22 1960-03-23 Improvements in and relating to electric circuit arrangements incorporating semiconductor controlled rectifiers Expired GB904246A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16653A US3108889A (en) 1960-03-22 1960-03-22 Sizing compositions

Publications (1)

Publication Number Publication Date
GB904246A true GB904246A (en) 1962-08-22

Family

ID=21778249

Family Applications (2)

Application Number Title Priority Date Filing Date
GB10315/60A Expired GB904246A (en) 1960-03-22 1960-03-23 Improvements in and relating to electric circuit arrangements incorporating semiconductor controlled rectifiers
GB10406/61A Expired GB931302A (en) 1960-03-22 1961-03-22 Paper sizing compositions

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB10406/61A Expired GB931302A (en) 1960-03-22 1961-03-22 Paper sizing compositions

Country Status (5)

Country Link
US (1) US3108889A (en)
BE (1) BE601646A (en)
ES (1) ES265916A1 (en)
GB (2) GB904246A (en)
NL (1) NL262637A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159008A (en) * 1984-05-15 1985-11-20 Hayashibara Ken Phase-regulated switching circuit
GB2178253A (en) * 1985-06-05 1987-02-04 Hayashibara Ken Surge-current preventing circuit

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1113248A (en) * 1963-12-05 1968-05-08 British Bewoid Company Ltd Improvements in or relating to emulsions of fatty acids
US6103308A (en) * 1998-04-23 2000-08-15 Gencorp Inc. Paper coating lubricant
US7244509B1 (en) 2002-04-19 2007-07-17 Evco Research, Llc Moisture resistant, repulpable paper products and method of making same
WO2003089527A1 (en) * 2002-04-19 2003-10-30 Evco Research, Llc Moisture resistant, repulpable paper products and method of making same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2104264A (en) * 1934-11-08 1938-01-04 Du Pont Paint composition
US2044056A (en) * 1935-04-29 1936-06-16 Nu Size Company Inc Waterproofing size and method of making same
US2233891A (en) * 1935-05-10 1941-03-04 Marbon Corp Plasticized protein compositions
US2757097A (en) * 1953-02-24 1956-07-31 Texize Chem Inc Emulsions for warp sizing containing cationic hydroxyacetate

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2159008A (en) * 1984-05-15 1985-11-20 Hayashibara Ken Phase-regulated switching circuit
GB2178253A (en) * 1985-06-05 1987-02-04 Hayashibara Ken Surge-current preventing circuit
US4710698A (en) * 1985-06-05 1987-12-01 Ken Hayashibara Phase-controlled automatic switching circuit
GB2178253B (en) * 1985-06-05 1989-07-19 Hayashibara Ken Phase-controlled automatic switching circuit

Also Published As

Publication number Publication date
GB931302A (en) 1963-07-17
US3108889A (en) 1963-10-29
ES265916A1 (en) 1961-09-16
NL262637A (en)
BE601646A (en) 1961-07-17

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