GB1155814A - Stabilised electrical power supply equipment - Google Patents

Stabilised electrical power supply equipment

Info

Publication number
GB1155814A
GB1155814A GB1737668A GB1737668A GB1155814A GB 1155814 A GB1155814 A GB 1155814A GB 1737668 A GB1737668 A GB 1737668A GB 1737668 A GB1737668 A GB 1737668A GB 1155814 A GB1155814 A GB 1155814A
Authority
GB
United Kingdom
Prior art keywords
gain
magnitude
comparator
feedback loop
output
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
GB1737668A
Inventor
Basil Bernard Foster
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB1737668A priority Critical patent/GB1155814A/en
Priority to DE19691916676 priority patent/DE1916676A1/en
Priority to ES365890A priority patent/ES365890A1/en
Priority to FR6911025A priority patent/FR2005985A1/fr
Publication of GB1155814A publication Critical patent/GB1155814A/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)
  • Control Of Amplification And Gain Control (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)

Abstract

1,155,814. Automatic control systems. STANDARD TELEPHONES & CABLES Ltd. April 10, 1968, No. 17376/68. Heading G3R. A regulated power supply of the type in which the magnitude of a D.C. output, e.g. voltage, current, or power, is maintained constant comprises a feedback loop the gain of which is controlled to provide maximum gain at the desired output level. As shown, a load 5 is supplied with constant current by the amplified, rectified and smoothed output from an amplitude comparator 2 which produces a series of pulses having a width related to the magnitude of an error signal derived from a feedback loop including a current sensing resistor 6, a reference source and a differential amplifier 7. The comparator 2 comprises two transistors connected as shown, the error signal being applied to the base of one transistor and a reference wave, e.g. of sawtooth form, being applied to the base of the other transistor, so that the comparator produces output pulses of duration equal to the period of time during which the instantaneous amplitude of the reference wave exceeds the magnitude of the error signal. The gain of the feedback loop may be made to vary non-linearly in response to charges in the magnitude of the output by including non-linear components in the differential amplifier 7. In the preferred embodiment, however, the gain of the feedback loop is varied by altering the conversion gain of the comparator 2, and this is effected by suitable shaping of the slope of the reference wave. For example, the wave may decay exponentially, or it may have a central portion of lesser slope than two adjacent portions. The way in which this sloping effects the desired gain control is described with reference to Fig. 2 (not shown).
GB1737668A 1968-04-10 1968-04-10 Stabilised electrical power supply equipment Expired GB1155814A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB1737668A GB1155814A (en) 1968-04-10 1968-04-10 Stabilised electrical power supply equipment
DE19691916676 DE1916676A1 (en) 1968-04-10 1969-04-01 Regulated power supply arrangement
ES365890A ES365890A1 (en) 1968-04-10 1969-04-10 Stabilised electrical power supply equipment
FR6911025A FR2005985A1 (en) 1968-04-10 1969-04-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1737668A GB1155814A (en) 1968-04-10 1968-04-10 Stabilised electrical power supply equipment

Publications (1)

Publication Number Publication Date
GB1155814A true GB1155814A (en) 1969-06-25

Family

ID=10094124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1737668A Expired GB1155814A (en) 1968-04-10 1968-04-10 Stabilised electrical power supply equipment

Country Status (4)

Country Link
DE (1) DE1916676A1 (en)
ES (1) ES365890A1 (en)
FR (1) FR2005985A1 (en)
GB (1) GB1155814A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485309A1 (en) * 1980-06-20 1981-12-24 Advanced Micro Devices Inc BATTERY POWER CIRCUIT FOR TELEPHONE LINE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2485309A1 (en) * 1980-06-20 1981-12-24 Advanced Micro Devices Inc BATTERY POWER CIRCUIT FOR TELEPHONE LINE

Also Published As

Publication number Publication date
ES365890A1 (en) 1971-03-16
FR2005985A1 (en) 1969-12-19
DE1916676A1 (en) 1969-10-30

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