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GB1308578A - Blocking oscillator circuits - Google Patents

Blocking oscillator circuits

Info

Publication number
GB1308578A
GB1308578A GB3022471A GB1308578DA GB1308578A GB 1308578 A GB1308578 A GB 1308578A GB 3022471 A GB3022471 A GB 3022471A GB 1308578D A GB1308578D A GB 1308578DA GB 1308578 A GB1308578 A GB 1308578A
Authority
GB
United Kingdom
Prior art keywords
blocking oscillator
oscillator circuits
discharge
transistor
transformer
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
GB3022471A
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.)
EMI Group Ltd
Original Assignee
Thorn Electrical 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 Thorn Electrical Industries Ltd filed Critical Thorn Electrical Industries Ltd
Publication of GB1308578A publication Critical patent/GB1308578A/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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator
    • 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
    • H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
    • H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
    • H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
    • H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
    • H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/338—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only in a self-oscillating arrangement

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

1308578 Supply circuits for discharge lamps THORN ELECTRICAL INDUSTRIES Ltd 28 June 1971 30224/71 Heading H2H [Also in Division H3] A blocking oscillator comprising transistor VT 1 , saturable feedback transformer T 2 and R.C. circuit R 1 , C 1 , has a further transformer T 1 in series therewith whose secondary is used to drive a discharge lamp 25. Diode MR 1 permits the capacitor to discharge when the transistor is non-conductive.
GB3022471A 1971-06-28 1971-06-28 Blocking oscillator circuits Expired GB1308578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3022471 1971-06-28

Publications (1)

Publication Number Publication Date
GB1308578A true GB1308578A (en) 1973-02-21

Family

ID=10304255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3022471A Expired GB1308578A (en) 1971-06-28 1971-06-28 Blocking oscillator circuits

Country Status (3)

Country Link
AU (1) AU461748B2 (en)
GB (1) GB1308578A (en)
ZA (1) ZA724392B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376912A (en) * 1980-07-21 1983-03-15 General Electric Company Electrodeless lamp operating circuit and method
US5065074A (en) * 1990-08-24 1991-11-12 Coolite Limited Fluorescent tube driver and lighting system
GB2275140A (en) * 1993-02-13 1994-08-17 Kijima Co Ltd Push-pull inverter; Flourescent lamp drive circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4376912A (en) * 1980-07-21 1983-03-15 General Electric Company Electrodeless lamp operating circuit and method
US5065074A (en) * 1990-08-24 1991-11-12 Coolite Limited Fluorescent tube driver and lighting system
GB2275140A (en) * 1993-02-13 1994-08-17 Kijima Co Ltd Push-pull inverter; Flourescent lamp drive circuit
GB2275140B (en) * 1993-02-13 1997-06-18 Kijima Co Ltd Push-pull inverter
CN1039272C (en) * 1993-02-13 1998-07-22 株式会社木 Push-pull dc-to-ac conoerter

Also Published As

Publication number Publication date
ZA724392B (en) 1973-03-28
AU461748B2 (en) 1975-06-05
AU4401572A (en) 1974-01-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee