FR2344176A1 - Power supply using series transistors - has transistors connected between load and rectifying diodes coupled to AC transformers secondary tappings - Google Patents

Power supply using series transistors - has transistors connected between load and rectifying diodes coupled to AC transformers secondary tappings

Info

Publication number
FR2344176A1
FR2344176A1 FR7707406A FR7707406A FR2344176A1 FR 2344176 A1 FR2344176 A1 FR 2344176A1 FR 7707406 A FR7707406 A FR 7707406A FR 7707406 A FR7707406 A FR 7707406A FR 2344176 A1 FR2344176 A1 FR 2344176A1
Authority
FR
France
Prior art keywords
transistors
load
power supply
series
output voltage
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.)
Granted
Application number
FR7707406A
Other languages
French (fr)
Other versions
FR2344176B1 (en
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.)
Toko Inc
Original Assignee
Toko Inc
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 Toko Inc filed Critical Toko Inc
Publication of FR2344176A1 publication Critical patent/FR2344176A1/en
Application granted granted Critical
Publication of FR2344176B1 publication Critical patent/FR2344176B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/62—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using bucking or boosting dc sources
    • 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
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Amplifiers (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The power supply consists of several transistors (Q1-Q5) each connected in series between the load and one tapping point on the ac transformer secondary via rectifier diodes and smoothing capacitors. The emitters of these transistors are connected together at one end of the load. The bases of the transistors are coupled separately via switches to biasing potentials that allow any one of them to be switched on whilst holding the other off. The output voltage therefore depends on which transistor is on. The bias voltage is made dependent on the output voltage for stabilisation. The advantage lies in producing a stable output voltage efficiently.
FR7707406A 1976-03-12 1977-03-11 Power supply using series transistors - has transistors connected between load and rectifying diodes coupled to AC transformers secondary tappings Granted FR2344176A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2735176A JPS52110454A (en) 1976-03-12 1976-03-12 Power controlling system

Publications (2)

Publication Number Publication Date
FR2344176A1 true FR2344176A1 (en) 1977-10-07
FR2344176B1 FR2344176B1 (en) 1981-10-23

Family

ID=12218607

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7707406A Granted FR2344176A1 (en) 1976-03-12 1977-03-11 Power supply using series transistors - has transistors connected between load and rectifying diodes coupled to AC transformers secondary tappings

Country Status (3)

Country Link
JP (1) JPS52110454A (en)
DE (1) DE2710794A1 (en)
FR (1) FR2344176A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151345A2 (en) * 1983-12-16 1985-08-14 Control Concepts Corporation Power converter apparatus and method employing plural branches

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2823538C2 (en) * 1978-05-30 1986-12-04 Diehl GmbH & Co, 8500 Nürnberg DC-AC voltage converter
JPH061416B2 (en) * 1986-02-26 1994-01-05 株式会社 アドバンテスト Voltage generator
US5610807A (en) * 1994-10-14 1997-03-11 Matsushita Electric Works, Ltd. Power converting system with a plurality of charging capacitors
JP4822941B2 (en) * 2006-06-12 2011-11-24 株式会社東芝 Power supply voltage control circuit and semiconductor integrated circuit
JP4666010B2 (en) 2008-06-12 2011-04-06 セイコーエプソン株式会社 Load drive circuit and inkjet printer

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0151345A2 (en) * 1983-12-16 1985-08-14 Control Concepts Corporation Power converter apparatus and method employing plural branches
EP0151345A3 (en) * 1983-12-16 1985-11-21 Control Concepts Corporation Power converter apparatus and method employing plural branches
US4628438A (en) * 1983-12-16 1986-12-09 Control Concepts Corporation Power converter apparatus and method employing plural branches

Also Published As

Publication number Publication date
DE2710794A1 (en) 1977-09-22
FR2344176B1 (en) 1981-10-23
JPS5630569B2 (en) 1981-07-15
JPS52110454A (en) 1977-09-16

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Legal Events

Date Code Title Description
ST Notification of lapse