GB1302902A - - Google Patents

Info

Publication number
GB1302902A
GB1302902A GB715270A GB715270A GB1302902A GB 1302902 A GB1302902 A GB 1302902A GB 715270 A GB715270 A GB 715270A GB 715270 A GB715270 A GB 715270A GB 1302902 A GB1302902 A GB 1302902A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
winding
transformer
feb
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
GB715270A
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 filed Critical
Publication of GB1302902A publication Critical patent/GB1302902A/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
    • 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
    • H02M3/3381—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 using a single commutation path

Abstract

1302902 DC-DC converters L DOMPER TORNIL 13 Feb 1970 [15 Feb 1969] 7152/70 Heading H2F [Also in Division H3] A circuit for producing a modified output from a D.C. input 1 comprises a transformer 3 connected in the emitter circuit of a transistor 4 and having a feedback winding 6 to the base of the transistor and a further winding 14 connected in series with a capacitor 14<SP>1</SP> across the primary winding of the transformer. When the D.C. input 1 is applied, transistor 4 becomes conductive until the core of transformer 3 saturates when the resulting reduction in base current turns off transistor 4 and allows the magnetic energy to charge capacitor 14<SP>1</SP>. Transistor 4 then becomes conductive again and the action is repeated. The voltage across winding 3 may be rectified at 17 and the circuit used has a D.C.-D.C. converter. The circuit is automatically blocked in the event of excessive load current.
GB715270A 1969-02-15 1970-02-13 Expired GB1302902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES36408369 1969-02-15

Publications (1)

Publication Number Publication Date
GB1302902A true GB1302902A (en) 1973-01-10

Family

ID=8452071

Family Applications (1)

Application Number Title Priority Date Filing Date
GB715270A Expired GB1302902A (en) 1969-02-15 1970-02-13

Country Status (2)

Country Link
FR (1) FR2037090B1 (en)
GB (1) GB1302902A (en)

Cited By (1)

* 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

Cited By (1)

* 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

Also Published As

Publication number Publication date
FR2037090B1 (en) 1973-11-16
FR2037090A1 (en) 1970-12-31

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Legal Events

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