GB1265569A - - Google Patents

Info

Publication number
GB1265569A
GB1265569A GB1265569DA GB1265569A GB 1265569 A GB1265569 A GB 1265569A GB 1265569D A GB1265569D A GB 1265569DA GB 1265569 A GB1265569 A GB 1265569A
Authority
GB
United Kingdom
Prior art keywords
switch
transistor
periods
control circuit
divider
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
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 GB1265569A publication Critical patent/GB1265569A/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
    • H02M3/02—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
    • H02M3/145—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 triode or transistor type requiring continuous application of a control signal
    • H02M3/155—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/1563—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators without using an external clock

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)
  • Rectifiers (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

1,265,569. Automatic voltage control. SIEMENS A.G. July 30, 1969 [July 31, 1968], No.38155/69. Heading G3R. Overload protection for a chopper type D.C. voltage regulator of the type wherein an (unspecified) electronic switch S is controlled by a control circuit R and a diode D1 allows a storage choke Dr1 to discharge through the load during off periods of the switch, comprises a current transformer Utr whose core is provided with an air-gap and which has primary windings I, II respectively connected in the main and discharge circuits as shown and a secondary winding III supplying two peak rectifier circuits D2, C3 and D3, C4 whose outputs are combined across a voltage divider R3, R4. A transistor Ts is supplied with an output from the divider R3, R4 and with a signal representative of the regulator output voltage derived from a divider R5, R6. During normal operation the transistor Ts is blocked and control circuit R varies the on/off periods of switch S in accordance with the variations of the output voltage from its predetermined value. When a predetermined maximum current is reached the transistor Ts becomes conductive and modifies the action of the control circuit R to reduce the conductive periods of the switch S or completely block it for a short period.
GB1265569D 1968-07-31 1969-07-30 Expired GB1265569A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681763746 DE1763746C3 (en) 1968-07-31 1968-07-31 Current limiting arrangement in a DC voltage regulating circuit

Publications (1)

Publication Number Publication Date
GB1265569A true GB1265569A (en) 1972-03-01

Family

ID=5697713

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1265569D Expired GB1265569A (en) 1968-07-31 1969-07-30

Country Status (4)

Country Link
JP (1) JPS5616624B1 (en)
DE (1) DE1763746C3 (en)
GB (1) GB1265569A (en)
NL (1) NL145063B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133590A (en) * 1982-10-19 1984-07-25 Int Standard Electric Corp Switching power supply
GB2261533A (en) * 1991-10-14 1993-05-19 Astec Int Ltd Indirect inductor current measurements in SMPS

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1042397B (en) * 1975-09-10 1980-01-30 Honeywell Inf Systems DYNAMIC CURRENT LIMITER CIRCUIT FOR SWITCHING REGULATION SYSTEMS
DE2916716A1 (en) * 1979-04-25 1980-11-06 Licentia Gmbh Transistor-switched power module - has overload protection current transformer between bridge rectifier and oscillator-driven transistor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2133590A (en) * 1982-10-19 1984-07-25 Int Standard Electric Corp Switching power supply
GB2261533A (en) * 1991-10-14 1993-05-19 Astec Int Ltd Indirect inductor current measurements in SMPS
US5428286A (en) * 1991-10-14 1995-06-27 Astec International Limited Switching mode power supplies

Also Published As

Publication number Publication date
NL145063B (en) 1975-02-17
JPS5616624B1 (en) 1981-04-17
DE1763746C3 (en) 1973-10-31
NL6911010A (en) 1970-02-03
DE1763746A1 (en) 1972-02-03
DE1763746B2 (en) 1973-04-12

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Legal Events

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