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GB1186363A - Thyristor Circuits - Google Patents

Thyristor Circuits

Info

Publication number
GB1186363A
GB1186363A GB2840266A GB2840266A GB1186363A GB 1186363 A GB1186363 A GB 1186363A GB 2840266 A GB2840266 A GB 2840266A GB 2840266 A GB2840266 A GB 2840266A GB 1186363 A GB1186363 A GB 1186363A
Authority
GB
United Kingdom
Prior art keywords
thyristor
capacitor
load
unijunction
triggering
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
GB2840266A
Inventor
Derek Stanley Adams
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
Joseph Lucas Industries 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 Lucas Industries Ltd, Joseph Lucas Industries Ltd filed Critical Lucas Industries Ltd
Priority to GB2840266A priority Critical patent/GB1186363A/en
Priority to SE868667A priority patent/SE333968B/xx
Publication of GB1186363A publication Critical patent/GB1186363A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/352—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being thyristors
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/06—Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors
    • 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
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/125—Conversion of DC power input into DC power output without intermediate conversion into AC 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
    • H02M3/135—Conversion of DC power input into DC power output without intermediate conversion into AC 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/35—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region
    • H03K3/351—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar semiconductor devices with more than two PN junctions, or more than three electrodes, or more than one electrode connected to the same conductivity region the devices being unijunction transistors

Landscapes

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

Abstract

1,186,363. Controlled rectifier switching circuits. JOSEPH LUCAS (INDUSTRIES) Ltd. 12 June, 1967 [24 June, 1966], No. 28402/66. Heading H3T. [Also in Division H2] In a thyristor circuit, Fig. 1, a thyristor 14 has its cathode connected to the negative terminal 12 of a D.C. source 13 and its anode connected to the positive terminal 11 through an inductor 15 and load 16 in series, and a capacitor 18 is connected in series with a switch 17 across thyristor 14, the arrangement being such that in a cycle of operation, firstly capacitor 18 charges through inductor 15 and load 16 to a voltage in excess of that of the D.C. source 13, then thyristor 14 is triggered to feed load 16, the charge on capacitor 18 is reversed (by triggering thyristor 21 into conduction) and finally this reversed charge on capacitor 18 is used to reverse bias thyristor 14 to cut it off (by triggering thyristor 17 into conduction). Should load 16 be inductive, such as a motor, a diode 22 is provided to limit the back e.m.f. generated when thyristor 14 is cut-off. The mean load current may be adjusted by variation of the firing time of thyristor 14. The thyristors of the circuit shown in Fig. 1 may be controlled by the circuit shown in Fig. 2, comprising a free running multivibrator T1, T2, controlling unijunction transistors U1, U2. Transformer secondaries 32, 34 and 35 are used to control thyristors 17, 14 and 21 respectively. When transistor T1, conducts, the consequent reduction in potential between the bases of unijunction U1 permits the discharge of capacitor Cl through the unijunction and transformer 31, thus triggering thyristor 17. When, subsequently, the multivibrator switches so that T1 cuts off and T2 conducts, capacitor C2 discharges through unijunction U2 and transformer 33, thus triggering thyristors 14 and 21 simultaneously.
GB2840266A 1966-06-24 1966-06-24 Thyristor Circuits Expired GB1186363A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2840266A GB1186363A (en) 1966-06-24 1966-06-24 Thyristor Circuits
SE868667A SE333968B (en) 1966-06-24 1967-06-20

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2840266A GB1186363A (en) 1966-06-24 1966-06-24 Thyristor Circuits

Publications (1)

Publication Number Publication Date
GB1186363A true GB1186363A (en) 1970-04-02

Family

ID=10275056

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2840266A Expired GB1186363A (en) 1966-06-24 1966-06-24 Thyristor Circuits

Country Status (2)

Country Link
GB (1) GB1186363A (en)
SE (1) SE333968B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656039A (en) * 1970-09-21 1972-04-11 Gen Electric Direct current control circuit
GB2218587A (en) * 1988-04-16 1989-11-15 Eev Ltd Pulse generators
US20150295507A1 (en) * 2012-11-27 2015-10-15 Abb Technology Ltd Thyristor based voltage source converter
CN106656135A (en) * 2017-02-08 2017-05-10 刘剑 Firefighting electronic switch circuit with interlocking function

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656039A (en) * 1970-09-21 1972-04-11 Gen Electric Direct current control circuit
US3660738A (en) * 1970-09-21 1972-05-02 Gen Electric Direct current control circuit
GB2218587A (en) * 1988-04-16 1989-11-15 Eev Ltd Pulse generators
US20150295507A1 (en) * 2012-11-27 2015-10-15 Abb Technology Ltd Thyristor based voltage source converter
US9762136B2 (en) * 2012-11-27 2017-09-12 Abb Schweiz Ag Thyristor based voltage source converter
CN106656135A (en) * 2017-02-08 2017-05-10 刘剑 Firefighting electronic switch circuit with interlocking function

Also Published As

Publication number Publication date
SE333968B (en) 1971-04-05

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed