GB1031958A - Improvements in or relating to d.c. voltage transformer apparatus - Google Patents

Improvements in or relating to d.c. voltage transformer apparatus

Info

Publication number
GB1031958A
GB1031958A GB763865A GB763865A GB1031958A GB 1031958 A GB1031958 A GB 1031958A GB 763865 A GB763865 A GB 763865A GB 763865 A GB763865 A GB 763865A GB 1031958 A GB1031958 A GB 1031958A
Authority
GB
United Kingdom
Prior art keywords
chopper
frequency
impedance
output voltage
rectifier
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
GB763865A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of GB1031958A publication Critical patent/GB1031958A/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
    • 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

Landscapes

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

Abstract

1,031,958. Automatic voltage control. TELEFUNKEN PATENTVERWERTUNGSGESELL SCHAFT. Feb.22,1965 [Feb. 25,1964], No. 7638/65. Heading G3R. [Also in Division H2] A load 6 is supplied from a D.C. source 1 by way of a chopper 2, a transformer 3, a frequency dependent impedance such as an inductor 4, and a rectifier 5. The chopper frequency is controlled in dependence upon output voltage variations by a feedback circuit including a comparator 7, a reference source 8, and an amplifier 9 for the error sigsignal. The arrangement is such that the voltage across the frequency impedance 4 varies as the chopper frequency varies whereby the input voltage to the rectifier 5 is automatically controlled in a sense to maintain the output voltage contact. Thus, if the impedance 4 is inductive as shown, the control signal is such that the chopper frequency increases with increase in output voltage; conversely if the impedance 4 is capacitive, then the chopper frequency is arranged to decrease with increase in output voltage. The frequency dependent impedance may comprise an inductor or capacitor connected in parallel with the rectifier 5 (Fig. 2, not shown). Suitable transistor circuit arrangement for the chopper 2, the amplifier 9 and the comparator 7, which also includes Zener diodes in a bridge circuit, are described with reference to (Fig. 3 not shown).
GB763865A 1964-02-25 1965-02-22 Improvements in or relating to d.c. voltage transformer apparatus Expired GB1031958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1964T0025681 DE1276181B (en) 1964-02-25 1964-02-25 DC-DC converter

Publications (1)

Publication Number Publication Date
GB1031958A true GB1031958A (en) 1966-06-02

Family

ID=7552236

Family Applications (1)

Application Number Title Priority Date Filing Date
GB763865A Expired GB1031958A (en) 1964-02-25 1965-02-22 Improvements in or relating to d.c. voltage transformer apparatus

Country Status (2)

Country Link
DE (1) DE1276181B (en)
GB (1) GB1031958A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123188A (en) * 1982-06-29 1984-01-25 Standard Telephones Cables Ltd DC-DC Converter
FR2798233A1 (en) * 1999-09-07 2001-03-09 Toko Inc Switch-mode electric power supply for liquid crystal displays that is able to operate in class B and class C modes

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230390A1 (en) * 1982-08-14 1984-02-16 odam, S.A., 67160 Wissembourg Power supply apparatus for a defibrillator, and a defibrillator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2123188A (en) * 1982-06-29 1984-01-25 Standard Telephones Cables Ltd DC-DC Converter
FR2798233A1 (en) * 1999-09-07 2001-03-09 Toko Inc Switch-mode electric power supply for liquid crystal displays that is able to operate in class B and class C modes

Also Published As

Publication number Publication date
DE1276181B (en) 1968-08-29

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