GB2022943A - A.C. to D.C. converter - Google Patents
A.C. to D.C. converterInfo
- Publication number
- GB2022943A GB2022943A GB7920270A GB7920270A GB2022943A GB 2022943 A GB2022943 A GB 2022943A GB 7920270 A GB7920270 A GB 7920270A GB 7920270 A GB7920270 A GB 7920270A GB 2022943 A GB2022943 A GB 2022943A
- Authority
- GB
- United Kingdom
- Prior art keywords
- supply
- capacitor
- transistor
- switching transistor
- 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
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
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Abstract
In an a.c. to d.c. converter comprising a rectifier (3) which feeds a reservoir capacitor (13) and a load (14) a choke (9) is interposed in the current path between the a.c. supply (1) and the capacitor (13), and a switching transistor (10) connected across the capacitor is repeatedly switched at a frequency appreciably greater than the supply frequency, so that current is alternately drawn from the supply when the transistor conducts to store energy in the choke (even when the instantaneous supply voltage is lower than the capacitor voltage) and transferred to the capacitor when the transistor is not conducting. The duty ratio of the switching transistor is controlled such that the supply current (i) substantially follows the supply voltage (v). Feedback from a comparator (19) to vary the duty ratio of the switching transistor may be provided via opto- coupler (20, 8) to regulate the output voltage. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2825708A DE2825708B2 (en) | 1978-06-12 | 1978-06-12 | Circuit arrangement for reducing harmonics in the alternating current in the case of direct current consumers that are fed from the alternating current network |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2022943A true GB2022943A (en) | 1979-12-19 |
GB2022943B GB2022943B (en) | 1982-04-28 |
Family
ID=6041602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7920270A Expired GB2022943B (en) | 1978-06-12 | 1979-06-11 | Ac to dc converter |
Country Status (6)
Country | Link |
---|---|
DE (1) | DE2825708B2 (en) |
FR (1) | FR2428939A1 (en) |
GB (1) | GB2022943B (en) |
IT (1) | IT1121370B (en) |
NL (1) | NL7904595A (en) |
SE (1) | SE7905092L (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2539563A1 (en) * | 1983-01-14 | 1984-07-20 | Matsushita Electric Works Ltd | HIGH FREQUENCY ALTERNATIVE POWER SOURCE |
US4564897A (en) * | 1983-01-13 | 1986-01-14 | Matsushita Electric Works, Ltd. | Power source |
EP0356818A2 (en) * | 1988-08-30 | 1990-03-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Circuitry for driving a load |
WO1994016492A1 (en) * | 1993-01-14 | 1994-07-21 | H.P.M. Industries Pty Limited | Power supply |
AU672796B2 (en) * | 1993-01-14 | 1996-10-17 | H.P.M. Industries Pty Limited | Power supply |
EP0854562A1 (en) * | 1996-12-17 | 1998-07-22 | PAPST-MOTOREN GMBH & CO. KG | Switching power supply |
WO2000004627A1 (en) * | 1998-07-14 | 2000-01-27 | Siemens Aktiengesellschaft | Circuit for regulated power supply for a charge |
US7683625B2 (en) | 2004-07-02 | 2010-03-23 | Ohm Limited | Electromagnetic surveying |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3025421C2 (en) * | 1980-07-04 | 1985-03-21 | Siemens AG, 1000 Berlin und 8000 München | Circuit arrangement for supplying a gas discharge lamp from an alternating current network |
DE3025405C2 (en) * | 1980-07-04 | 1983-01-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Method for achieving a sinusoidal power consumption of a direct current consumer with a charging capacitor connected in parallel |
AT374637B (en) * | 1980-12-15 | 1984-05-10 | Zumtobel Ag | CIRCUIT ARRANGEMENT FOR OPERATING A LOAD FROM AN AC NETWORK |
DE3117516C2 (en) * | 1981-05-02 | 1984-07-26 | Escher Wyss AG, Zürich | Arrangement for controlling a deflection adjusting roller |
DE3522568A1 (en) * | 1985-06-24 | 1987-01-02 | Metallgesellschaft Ag | METHOD FOR OPERATING AN ELECTROFILTER |
DE3533666A1 (en) * | 1985-09-20 | 1987-03-26 | Siemens Ag | Power supply device having pulsed charging current limiting |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1219437A (en) * | 1968-08-23 | 1971-01-13 | British Aircraft Corp Ltd | Improvements relating to power supply circuits |
US3825815A (en) * | 1973-06-12 | 1974-07-23 | Westinghouse Electric Corp | Electrical power system |
US3913002A (en) * | 1974-01-02 | 1975-10-14 | Gen Electric | Power circuits for obtaining a high power factor electronically |
-
1978
- 1978-06-12 DE DE2825708A patent/DE2825708B2/en not_active Withdrawn
-
1979
- 1979-05-30 FR FR7913826A patent/FR2428939A1/en not_active Withdrawn
- 1979-06-11 SE SE7905092A patent/SE7905092L/en not_active Application Discontinuation
- 1979-06-11 IT IT23441/79A patent/IT1121370B/en active
- 1979-06-11 GB GB7920270A patent/GB2022943B/en not_active Expired
- 1979-06-12 NL NL7904595A patent/NL7904595A/en not_active Application Discontinuation
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4564897A (en) * | 1983-01-13 | 1986-01-14 | Matsushita Electric Works, Ltd. | Power source |
FR2539563A1 (en) * | 1983-01-14 | 1984-07-20 | Matsushita Electric Works Ltd | HIGH FREQUENCY ALTERNATIVE POWER SOURCE |
DE3400580A1 (en) * | 1983-01-14 | 1984-09-27 | Matsushita Electric Works Ltd | POWER SOURCE OR MAINS DEVICE FOR CONVERTING A MAINS AC VOLTAGE TO A HIGH-FREQUENCY AC OUTPUT VOLTAGE WITH SUPPRESSED NET HUMAN |
EP0356818A2 (en) * | 1988-08-30 | 1990-03-07 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Circuitry for driving a load |
US4959591A (en) * | 1988-08-30 | 1990-09-25 | Patent Treuhand Gesellschaft Fur Elektrische Gluhlampen M.B.H. | Rectifier-inverter circuit with low harmonic feedback, particularly for operation of fluorescent lamps |
EP0356818A3 (en) * | 1988-08-30 | 1991-09-18 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Circuitry for driving a load |
WO1994016492A1 (en) * | 1993-01-14 | 1994-07-21 | H.P.M. Industries Pty Limited | Power supply |
US5528484A (en) * | 1993-01-14 | 1996-06-18 | H.P.M. Industries Pty Limited | Power supply |
AU672796B2 (en) * | 1993-01-14 | 1996-10-17 | H.P.M. Industries Pty Limited | Power supply |
EP0854562A1 (en) * | 1996-12-17 | 1998-07-22 | PAPST-MOTOREN GMBH & CO. KG | Switching power supply |
WO2000004627A1 (en) * | 1998-07-14 | 2000-01-27 | Siemens Aktiengesellschaft | Circuit for regulated power supply for a charge |
US7683625B2 (en) | 2004-07-02 | 2010-03-23 | Ohm Limited | Electromagnetic surveying |
Also Published As
Publication number | Publication date |
---|---|
GB2022943B (en) | 1982-04-28 |
FR2428939A1 (en) | 1980-01-11 |
SE7905092L (en) | 1979-12-13 |
IT1121370B (en) | 1986-04-02 |
DE2825708B2 (en) | 1980-06-26 |
DE2825708A1 (en) | 1979-12-13 |
NL7904595A (en) | 1979-12-14 |
IT7923441A0 (en) | 1979-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2022943A (en) | A.C. to D.C. converter | |
JPS5532428A (en) | Switching regulator | |
ES8401296A1 (en) | Switched-mode self-oscillating supply voltage circuit. | |
DE3464830D1 (en) | Flyback converter device | |
JPS5528167A (en) | Parallel type constant voltage source unit by constant current feeding | |
JPS57161913A (en) | Power supply system | |
GB1284630A (en) | Improvements in or relating to d.c. converter circuits | |
GB2016083A (en) | Spark ignition circuit | |
JPS5649682A (en) | Power source device | |
US3936721A (en) | Electrical power supplies | |
ES461152A1 (en) | Power supply | |
JPS5649678A (en) | Power source device | |
JPS558239A (en) | Power supply circuit | |
EP0320605A3 (en) | Electronic switching power supply with an inductance dc-dc converter | |
JPS5445731A (en) | Multi-output power unit | |
JPS57132219A (en) | Method and device for power supply from current source circuit | |
JPS6447223A (en) | Power source equipment | |
JPS5541115A (en) | Switching-type constant voltage circuit | |
JPS5617411A (en) | Switching electric power source | |
JPS57162966A (en) | Separately-excited dc/dc converter circuit | |
JPS5588571A (en) | Dc-dc converter | |
JPS5588109A (en) | Regulated-power circuit | |
JPS5659324A (en) | Switching electric power source | |
JPS5566276A (en) | Switching power supply device | |
JPS5682918A (en) | Auxiliary power circuit of power unit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |