GB1064942A - Improvements in and relating to electric power supply apparatus - Google Patents

Improvements in and relating to electric power supply apparatus

Info

Publication number
GB1064942A
GB1064942A GB3984962A GB3984962A GB1064942A GB 1064942 A GB1064942 A GB 1064942A GB 3984962 A GB3984962 A GB 3984962A GB 3984962 A GB3984962 A GB 3984962A GB 1064942 A GB1064942 A GB 1064942A
Authority
GB
United Kingdom
Prior art keywords
voltage
transistor
output
load current
stage
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
GB3984962A
Inventor
George Oscar Walter
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.)
A P T ELECTRONIC IND Ltd
Original Assignee
A P T ELECTRONIC IND 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 A P T ELECTRONIC IND Ltd filed Critical A P T ELECTRONIC IND Ltd
Priority to GB3984962A priority Critical patent/GB1064942A/en
Publication of GB1064942A publication Critical patent/GB1064942A/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)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

1,064,942. Automatic voltage control. A.P.T. ELECTRONIC INDUSTRIES Ltd. Jan.22, 1964 [Oct.22, 1962], No.39849/62. Heading G3R. An electric power supply apparatus includes a series control element between an input and an output, and means for controlling the voltage at the input as a function of load current and of the voltage across said element. As shown, a voltage regulator comprises a first stage including a switching transistor 12 which provides the input to a second stage including a series resistor 23 and a series transistor 13 the impedance of which is controlled in known manner to provide a stabilized voltage at output terminals 11. A voltage proportional to the voltage across the transistor 13 and to the load current through resistor 23 is derived from a voltage divider 41, 42 and is applied to an amplifier 25 together with a reference voltage derived from a Zener diode 33. The output from amplifier 25 controls the switching rate of transistor 12; thus when the load current is at its maximum, the output voltage of the first stage is reduced so that the voltage across transistor 13 is at a minimum value consistent with the transistor not being in a saturated condition, and when the load current is at a minimum value the output voltage of the first stage is increased. The arrangement thus enables the transistor 13 to be operated at a point near its condition of maximum dissipation, without risk of damage.
GB3984962A 1962-10-22 1962-10-22 Improvements in and relating to electric power supply apparatus Expired GB1064942A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3984962A GB1064942A (en) 1962-10-22 1962-10-22 Improvements in and relating to electric power supply apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3984962A GB1064942A (en) 1962-10-22 1962-10-22 Improvements in and relating to electric power supply apparatus

Publications (1)

Publication Number Publication Date
GB1064942A true GB1064942A (en) 1967-04-12

Family

ID=10411822

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3984962A Expired GB1064942A (en) 1962-10-22 1962-10-22 Improvements in and relating to electric power supply apparatus

Country Status (1)

Country Link
GB (1) GB1064942A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115079A1 (en) * 1981-04-14 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for generating highly-constant DC voltages by means of a voltage converter
GB2244155A (en) * 1990-05-16 1991-11-20 Seiko Instr Inc Improving series voltage regulator efficiency by feedback to a switching pre-regulator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3115079A1 (en) * 1981-04-14 1982-10-28 Siemens AG, 1000 Berlin und 8000 München Circuit arrangement for generating highly-constant DC voltages by means of a voltage converter
GB2244155A (en) * 1990-05-16 1991-11-20 Seiko Instr Inc Improving series voltage regulator efficiency by feedback to a switching pre-regulator
US5216351A (en) * 1990-05-16 1993-06-01 Seiko Instruments Inc. Cascaded switching and series regulators

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