GB885685A - Improvements in or relating to electric stabilising circuits - Google Patents

Improvements in or relating to electric stabilising circuits

Info

Publication number
GB885685A
GB885685A GB2086658A GB2086658A GB885685A GB 885685 A GB885685 A GB 885685A GB 2086658 A GB2086658 A GB 2086658A GB 2086658 A GB2086658 A GB 2086658A GB 885685 A GB885685 A GB 885685A
Authority
GB
United Kingdom
Prior art keywords
oscillator
voltage
transistor
load
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
GB2086658A
Inventor
David George Wenham
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2086658A priority Critical patent/GB885685A/en
Publication of GB885685A publication Critical patent/GB885685A/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
    • H02M3/3385—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)

Abstract

885,685. Automatic control systems for electricity supplies. GENERAL ELECTRIC CO. Ltd. June 4, 1959 [June 30, 1958], No. 20866/58. Class 38 (4). In an automatic control system a load is connected to the input or rectified output of an oscillator and a parameter of the power supplied to the load is stabilized by varying, through an amplifier, the emitter-collector impedance of a transistor connected between a direct-current source and the input of the oscillator. In an embodiment, an oscillator 2 having a rectified output is supplied via a transistorized stabilizing arrangement 1 from a source connected to terminals 12, 13. The oscillator 2 comprises bridgeconnected transistors 14-17 having emitterbase feedback applied from windings 20-23 of a transformer 19. The square-wave voltage across a secondary 30 is fed to output terminals 33, 36 via a bridge rectifier 31-34. The voltage across a winding 38, proportional to the output voltage, is rectified and smoothed by a diode 39 and a capacitor 40. The stabilizing arrangement comprises parallel-connected transistors 3, 4 the emitter-collector impedance of which is dependent on the collector current of a transistor 6 amplified by a transistor 7. The transistor 6 is energized by the voltage across the capacitor 40 and a feedback voltage is applied from a tapping on a potential divider comprising resistors 42-44. The emitter voltage is stabilized by a Zener diode 9 and resistor 8. It is stated that the feedback voltage may be derived from the output across terminals 35, 36 and that the load may be connected to the input to the oscillator 2, the feedback voltage being derived from across the load. The starting of the oscillator is facilitated by biasing resistors 28, 29 and a resistor 5 by-passes oscillator current when the transistors 3, 4 are cut-off.
GB2086658A 1958-06-30 1958-06-30 Improvements in or relating to electric stabilising circuits Expired GB885685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2086658A GB885685A (en) 1958-06-30 1958-06-30 Improvements in or relating to electric stabilising circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2086658A GB885685A (en) 1958-06-30 1958-06-30 Improvements in or relating to electric stabilising circuits

Publications (1)

Publication Number Publication Date
GB885685A true GB885685A (en) 1961-12-28

Family

ID=10153063

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2086658A Expired GB885685A (en) 1958-06-30 1958-06-30 Improvements in or relating to electric stabilising circuits

Country Status (1)

Country Link
GB (1) GB885685A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450979A (en) * 1965-07-28 1969-06-17 Bbc Brown Boveri & Cie D.c. to d.c. voltage divider utilizing transistor bridge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3450979A (en) * 1965-07-28 1969-06-17 Bbc Brown Boveri & Cie D.c. to d.c. voltage divider utilizing transistor bridge

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