GB1036712A - Improvements in or relating to direct current supplies - Google Patents

Improvements in or relating to direct current supplies

Info

Publication number
GB1036712A
GB1036712A GB3075361A GB3075361A GB1036712A GB 1036712 A GB1036712 A GB 1036712A GB 3075361 A GB3075361 A GB 3075361A GB 3075361 A GB3075361 A GB 3075361A GB 1036712 A GB1036712 A GB 1036712A
Authority
GB
United Kingdom
Prior art keywords
circuit
load
smoothing
transistor
direct current
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
GB3075361A
Inventor
John James Arthur Tennant
Roy Frank Lewis
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Priority to GB3075361A priority Critical patent/GB1036712A/en
Publication of GB1036712A publication Critical patent/GB1036712A/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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • H02M1/15—Arrangements for reducing ripples from dc input or output using active elements
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/16—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies
    • H05B41/20—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch
    • H05B41/23—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
    • H05B41/232—Circuit arrangements in which the lamp is fed by dc or by low-frequency ac, e.g. by 50 cycles/sec ac, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for low-pressure lamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

1,036,712. Smoothing direct current. RANK ORGANISATION. Nov. 23, 1962 [Aug. 25, 1961], No. 30753/61. Heading H2F. A circuit for smoothing rectified A.C. comprises resistors 5, 6, in a supply line to a load 4, the resistor 5 being shunted by one or more transistors 7 and 8 in cascade and acting as emitter followers the transistor 8 being controlled by an amplifying transistor 9 which is responsive to ripple signal derived across a circuit comprising resistors 10, 12, and capacitor 11. The circuit operates in such a way that an increase in the ripple signal operates to drive the transistor 7 towards cut-off, thereby tending to maintain a constant voltage across the load. In a further embodiment two rectifiers fed from a common source are connected in parallel to supply a load, one of the rectifiers being provided with a smoothing circuit as above (Fig. 2, not shown).
GB3075361A 1961-08-25 1961-08-25 Improvements in or relating to direct current supplies Expired GB1036712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3075361A GB1036712A (en) 1961-08-25 1961-08-25 Improvements in or relating to direct current supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3075361A GB1036712A (en) 1961-08-25 1961-08-25 Improvements in or relating to direct current supplies

Publications (1)

Publication Number Publication Date
GB1036712A true GB1036712A (en) 1966-07-20

Family

ID=10312601

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3075361A Expired GB1036712A (en) 1961-08-25 1961-08-25 Improvements in or relating to direct current supplies

Country Status (1)

Country Link
GB (1) GB1036712A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2030280A1 (en) * 1969-02-04 1970-11-13 Siemens Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2030280A1 (en) * 1969-02-04 1970-11-13 Siemens Ag

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