GB1414222A - Constant current power supply circuits - Google Patents

Constant current power supply circuits

Info

Publication number
GB1414222A
GB1414222A GB878773A GB878773A GB1414222A GB 1414222 A GB1414222 A GB 1414222A GB 878773 A GB878773 A GB 878773A GB 878773 A GB878773 A GB 878773A GB 1414222 A GB1414222 A GB 1414222A
Authority
GB
United Kingdom
Prior art keywords
winding
transformer
current
feedback
windings
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
GB878773A
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.)
North Electric Co
Original Assignee
North Electric 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 North Electric Co filed Critical North Electric Co
Publication of GB1414222A publication Critical patent/GB1414222A/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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53846—Control circuits
    • H02M7/53862—Control circuits using transistor type converters
    • 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
    • H02M3/3385—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 with automatic control of output voltage or current
    • H02M3/3387—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 with automatic control of output voltage or current in a push-pull configuration
    • H02M3/3388—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 with automatic control of output voltage or current in a push-pull configuration of the parallel type
    • 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
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5383—Conversion of dc power input into ac 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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
    • H02M7/53846—Control circuits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1414222 Automatic current and voltage regulation NORTH ELECTRIC CO 22 Feb 1973 [16 March 1972] 8787/73 Headings G3R and G3X A constant current supply circuit includes a transistor oscillator with centre-tapped primary and feedback windings in a main transformer. The parameters of the transformer and oscillator circuit are chosen so that the current is maintained constant irrespective of changes in load resistance. As shown, a supply for a corona-emitting device in an electrostatic copier includes a transformer 26 with a primary winding 20, feedback winding 21, and output winding 22 connected to a load 18 with varying resistance R1. A centre tap on winding 20 is connected to one side of a D.C. source 10, while a reference circuit 34 including a Zener diode 36 supplies a control voltage to the centre tap of winding 21, the ends of which are connected to the bases of transistors 28, 30 driven in oscillatory mode. The load current is maintained constant by the action of the feedback winding provided the numbers of turns in the transformer windings are chosen to satisfy the relationship where Re is the value of resistor 31 in the emitter circuit of transistors 28, 30; Rc is the transformer equivalent core loss resistance; and Np, Ns, Nf are the numbers of turns in windings 20, 22, 21 respectively. A constant D.C. output current may be produced using a rectifier or multiplier, Fig. 3 (not shown), and closed loop regulation of the rectified output current or voltage using a feedback amplifier connected to winding 21 is also described, Fig. 4 (not shown).
GB878773A 1972-03-16 1973-02-22 Constant current power supply circuits Expired GB1414222A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23533572A 1972-03-16 1972-03-16

Publications (1)

Publication Number Publication Date
GB1414222A true GB1414222A (en) 1975-11-19

Family

ID=22885061

Family Applications (1)

Application Number Title Priority Date Filing Date
GB878773A Expired GB1414222A (en) 1972-03-16 1973-02-22 Constant current power supply circuits

Country Status (5)

Country Link
US (1) US3775702A (en)
JP (1) JPS492041A (en)
CA (1) CA976610A (en)
DE (1) DE2311833A1 (en)
GB (1) GB1414222A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020310A (en) * 1975-03-20 1977-04-26 Souder Jr James J Container for inductively heating food
US5214356A (en) * 1978-12-28 1993-05-25 Nilssen Ole K Dimmable fluorescent lamp ballast
DE2927837C2 (en) * 1979-07-10 1982-09-16 Peter 7750 Konstanz Kreutzer Transistor inverter circuit
US4339732A (en) * 1980-07-25 1982-07-13 Xerox Corporation Closed loop constant current tuned oscillator
EP0051179B1 (en) * 1980-11-03 1984-09-19 Siemens Aktiengesellschaft Oscillation circuit which may take the form of an integrated circuit
FR2498131A1 (en) * 1981-01-22 1982-07-23 Lecluse Jean Francois LV auxiliary supply DC=DC converter for battery powered vehicle - uses push=pull power transistor oscillator feeding step down transformer having rectified output to produce LV DC
HU190567B (en) * 1984-05-10 1986-09-29 Budapesti Mueszaki Egyetem,Hu Circuit arrangement for generating alternating current, for transferring thereof between circuits with different voltage and for stabilizing thereof
GB2343065A (en) * 1998-10-01 2000-04-26 Tunewell Technology Ltd Improved power supply for series connected lamps
DE102015102727A1 (en) * 2015-02-25 2016-08-25 Maschinenfabrik Reinhausen Gmbh Method for changing the active number of turns of a control winding in an electrical system and electrical system with a control winding

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919412A (en) * 1956-05-29 1959-12-29 Gen Electric Co Ltd Electric oscillator systems
US3305760A (en) * 1963-01-16 1967-02-21 Larry L Davis Automatic line and battery operated power supply system
US3327199A (en) * 1963-08-23 1967-06-20 Westinghouse Electric Corp Transistorized high voltage regulated power supply system with temperature compensating means
US3284724A (en) * 1963-10-14 1966-11-08 Robertshaw Controls Co Oscillator with feedback bias amplitude stabilization

Also Published As

Publication number Publication date
JPS492041A (en) 1974-01-09
US3775702A (en) 1973-11-27
DE2311833A1 (en) 1973-09-27
CA976610A (en) 1975-10-21

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee