GB1506633A - Electrical isolating circuits - Google Patents
Electrical isolating circuitsInfo
- Publication number
- GB1506633A GB1506633A GB22016/75A GB2201675A GB1506633A GB 1506633 A GB1506633 A GB 1506633A GB 22016/75 A GB22016/75 A GB 22016/75A GB 2201675 A GB2201675 A GB 2201675A GB 1506633 A GB1506633 A GB 1506633A
- Authority
- GB
- United Kingdom
- Prior art keywords
- output
- frequency
- circuit
- input
- impedance
- 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
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
- H02M3/02—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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
-
- 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
-
- 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
- H02M7/4807—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 having a high frequency intermediate AC stage
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/05—Capacitor coupled rectifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Ac-Ac Conversion (AREA)
- Rectifiers (AREA)
Abstract
1506633 Voltage measuring N SENGER 21 May 1975 [21 May 1974 19 Nov 1974 14 Feb 1975 24 Feb 1975] 22016/75 Heading G1U [Also in Division H2] An electrical isolating circuit has an input port for connection to one circuit and an output port for connection to another circuit and comprises a rectifier connected to the input port, a chopper for chopping the rectified output to produce an A.C. output signal of chopper frequency, a filter circuit connected to the chopper output for passing signals at the chopper frequency while preventing signals of a lower frequency from passing, and another rectifier for rectifying signals passed through the filter for delivery to the output port, the arrangement being such that for signals of the lower frequency, the impedance seen looking into one of the ports is substantially independant of any external impedance connected across the other of the ports. The embodiment shown in Fig. 3 may be connected to the input and/or output of a conventional capacitive voltage transformation circuit, Fig. 1 (not shown) to isolate circuits connected to this voltage transformer from the impedance changes occurring when the capacitors switch between series and parallel. In Fig. 3 alternating input voltage U e of frequency f 1 is applied to rectifier 240, whose output is chopped in circuit 241 at a frequency f 2 much greater than f 1 . The chopped output is applied to filter circuit 244, the values of whose components C1 ... C4 and L together with the frequency f 2 , are chosen so that the impedance seen looking into the input or output of the isolating circuit is substantially independent of any impedance connected across the output or input respectively. The output of filter 244 is applied to rectifier 245, which feeds a polarity correcting circuit (or commutating switch arrangement) 246, whose output is applied to a low pass filter 247 which removes the chopping frequency f 2 and its harmonies to produce an output signal whose frequency f a is the same as f 1 . The theoretical basis of the isolating circuits is explained assuming a very small impedance of capacitors C1 ... C4 at the frequency f 2 and an inductance L which provides a short circuit to earth at the frequency f 1 . If the input voltage U e is a uni-directional one (U c ), members 246, 247 are omitted and smoothing capacitors (250, 251) are connected across the outputs of rectifiers 240, 245, Fig. 4 (not shown).
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2424745 | 1974-05-21 | ||
DE2455468 | 1974-11-19 | ||
DE2506685 | 1975-02-14 | ||
DE2508314A DE2508314C3 (en) | 1975-02-24 | 1975-02-24 | Circuit arrangement for galvanic separation of a consumer from a supply network |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1506633A true GB1506633A (en) | 1978-04-05 |
Family
ID=27431853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB22016/75A Expired GB1506633A (en) | 1974-05-21 | 1975-05-21 | Electrical isolating circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1506633A (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398723A2 (en) * | 1989-05-18 | 1990-11-22 | Hirotami Nakano | Switching power supply apparatus and isolating method thereof |
US5134307A (en) * | 1989-05-18 | 1992-07-28 | Hirotami Nakano | Uninterruptible power supply apparatus and isolating method thereof |
GB2291287A (en) * | 1994-06-28 | 1996-01-17 | Harris Corp | AC-DC power converter |
WO2001080411A1 (en) * | 2000-04-12 | 2001-10-25 | Wolfgang Croce | Switched-mode power supply |
WO2006119362A2 (en) * | 2005-05-03 | 2006-11-09 | Massachusetts Institute Of Technology | Methods and apparatus for resistance compression networks |
US8587976B2 (en) | 2009-07-02 | 2013-11-19 | Sma Solar Technology Ag | DC/DC converter with auxiliary converter for earth current compensation |
US8830709B2 (en) | 2012-06-25 | 2014-09-09 | Eta Devices, Inc. | Transmission-line resistance compression networks and related techniques |
US10418841B2 (en) | 2016-08-24 | 2019-09-17 | Witricity Corporation | Wireless power systems having interleaved rectifiers |
US11356079B2 (en) | 2020-01-23 | 2022-06-07 | Witricity Corporation | Tunable reactance circuits for wireless power systems |
US11489332B2 (en) | 2019-05-24 | 2022-11-01 | Witricity Corporation | Protection circuits for wireless power receivers |
US11631999B2 (en) | 2020-03-06 | 2023-04-18 | Witricity Corporation | Active rectification in wireless power systems |
US11695300B2 (en) | 2018-11-30 | 2023-07-04 | Witricity Corporation | Systems and methods for low power excitation in high power wireless power systems |
US11695270B2 (en) | 2020-01-29 | 2023-07-04 | Witricity Corporation | Systems and methods for auxiliary power dropout protection |
US11843258B2 (en) | 2019-08-26 | 2023-12-12 | Witricity Corporation | Bidirectional operation of wireless power systems |
-
1975
- 1975-05-21 GB GB22016/75A patent/GB1506633A/en not_active Expired
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0398723A2 (en) * | 1989-05-18 | 1990-11-22 | Hirotami Nakano | Switching power supply apparatus and isolating method thereof |
EP0398723A3 (en) * | 1989-05-18 | 1991-01-23 | Hirotami Nakano | Switching power supply apparatus and isolating method thereof |
US5134307A (en) * | 1989-05-18 | 1992-07-28 | Hirotami Nakano | Uninterruptible power supply apparatus and isolating method thereof |
GB2291287A (en) * | 1994-06-28 | 1996-01-17 | Harris Corp | AC-DC power converter |
GB2291287B (en) * | 1994-06-28 | 1998-11-11 | Harris Corp | AC-DC power converter |
WO2001080411A1 (en) * | 2000-04-12 | 2001-10-25 | Wolfgang Croce | Switched-mode power supply |
WO2006119362A2 (en) * | 2005-05-03 | 2006-11-09 | Massachusetts Institute Of Technology | Methods and apparatus for resistance compression networks |
WO2006119362A3 (en) * | 2005-05-03 | 2007-02-22 | Massachusetts Inst Technology | Methods and apparatus for resistance compression networks |
US7535133B2 (en) | 2005-05-03 | 2009-05-19 | Massachusetts Institute Of Technology | Methods and apparatus for resistance compression networks |
US8587976B2 (en) | 2009-07-02 | 2013-11-19 | Sma Solar Technology Ag | DC/DC converter with auxiliary converter for earth current compensation |
US8830709B2 (en) | 2012-06-25 | 2014-09-09 | Eta Devices, Inc. | Transmission-line resistance compression networks and related techniques |
US8830710B2 (en) | 2012-06-25 | 2014-09-09 | Eta Devices, Inc. | RF energy recovery system |
US10418841B2 (en) | 2016-08-24 | 2019-09-17 | Witricity Corporation | Wireless power systems having interleaved rectifiers |
US10707693B2 (en) | 2016-08-24 | 2020-07-07 | Witricity Corporation | Wireless power systems having interleaved rectifiers |
US11695300B2 (en) | 2018-11-30 | 2023-07-04 | Witricity Corporation | Systems and methods for low power excitation in high power wireless power systems |
US11710985B2 (en) | 2018-11-30 | 2023-07-25 | Witricity Corporation | Systems and methods for low power excitation in high power wireless power systems |
US11489332B2 (en) | 2019-05-24 | 2022-11-01 | Witricity Corporation | Protection circuits for wireless power receivers |
US11695271B2 (en) | 2019-05-24 | 2023-07-04 | Witricity Corporation | Protection circuits for wireless power receivers |
US11843258B2 (en) | 2019-08-26 | 2023-12-12 | Witricity Corporation | Bidirectional operation of wireless power systems |
US11356079B2 (en) | 2020-01-23 | 2022-06-07 | Witricity Corporation | Tunable reactance circuits for wireless power systems |
US11695270B2 (en) | 2020-01-29 | 2023-07-04 | Witricity Corporation | Systems and methods for auxiliary power dropout protection |
US11909198B2 (en) | 2020-01-29 | 2024-02-20 | Witricity Corporation | Gate driver implementations for safe wireless power system operation |
US11631999B2 (en) | 2020-03-06 | 2023-04-18 | Witricity Corporation | Active rectification in wireless power systems |
US11888328B2 (en) | 2020-03-06 | 2024-01-30 | Witricity Corporation | Active rectification in wireless power systems |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee | ||
PCNP | Patent ceased through non-payment of renewal fee |