CH600344A5 - - Google Patents
Info
- Publication number
- CH600344A5 CH600344A5 CH1172975A CH1172975A CH600344A5 CH 600344 A5 CH600344 A5 CH 600344A5 CH 1172975 A CH1172975 A CH 1172975A CH 1172975 A CH1172975 A CH 1172975A CH 600344 A5 CH600344 A5 CH 600344A5
- Authority
- CH
- Switzerland
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/133—Arrangements for measuring electric power or power factor by using digital technique
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/08—Circuits for altering the measuring range
- G01R15/09—Autoranging circuits
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/127—Arrangements for measuring electric power or power factor by using pulse modulation
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/505,721 US3976941A (en) | 1974-09-13 | 1974-09-13 | Auto-ranging system for an electronic energy meter |
Publications (1)
Publication Number | Publication Date |
---|---|
CH600344A5 true CH600344A5 (xx) | 1978-06-15 |
Family
ID=24011549
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH1172975A CH600344A5 (xx) | 1974-09-13 | 1975-09-10 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3976941A (xx) |
JP (1) | JPS5154469A (xx) |
CA (1) | CA1035840A (xx) |
CH (1) | CH600344A5 (xx) |
DE (1) | DE2539344A1 (xx) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4056775A (en) * | 1977-01-07 | 1977-11-01 | General Electric Company | Electronic kWh meter having internal power supply and error correction system |
US4092592A (en) * | 1977-01-07 | 1978-05-30 | General Electric Company | Electronic kWh meter having virtual ground isolation |
US4079313A (en) * | 1977-04-18 | 1978-03-14 | Allen-Bradley Company | Digital watts transducer |
CH619543A5 (xx) * | 1978-01-25 | 1980-09-30 | Electricite Neuchateloise Sa | |
DE2831407C3 (de) * | 1978-07-17 | 1986-06-19 | Siemens AG, 1000 Berlin und 8000 München | Elektronische Meßeinrichtung für analoge elektrische Signale |
US4288744A (en) * | 1979-07-19 | 1981-09-08 | Allen-Bradley Company | Summing watt-hour transducer |
US4360879A (en) * | 1980-08-28 | 1982-11-23 | The Valeron Corporation | Power measuring device |
US4814996A (en) * | 1982-06-10 | 1989-03-21 | Futures Technology, Ltd. | Portable energy cost calculation |
US4486707A (en) * | 1982-09-24 | 1984-12-04 | Sangamo Weston, Inc. | Gain switching device with reduced error for watt meter |
DE3329761A1 (de) * | 1983-08-17 | 1985-02-28 | Siemens AG, 1000 Berlin und 8000 München | Elektronischer elektrizitaetszaehler mit automatischer messbereichserweiterung |
FR2617310A1 (fr) * | 1987-06-26 | 1988-12-30 | Kalfon Rene | Dispositif centralise de comptage notamment de consommations d'energie electrique |
US5457621A (en) * | 1992-02-21 | 1995-10-10 | Abb Power T&D Company Inc. | Switching power supply having voltage blocking clamp |
US5537029A (en) | 1992-02-21 | 1996-07-16 | Abb Power T&D Company Inc. | Method and apparatus for electronic meter testing |
SE506168C2 (sv) * | 1996-01-17 | 1997-11-17 | Allgon Ab | Sätt och anordning för mätning av reflektionsförlusten hos en radiofrekvent signal |
DE19638393C1 (de) * | 1996-09-19 | 1997-12-11 | Siemens Ag | Schaltungsanordnung zur Widerstands- und Leckmessung sowie deren Verwendung |
WO1998018013A2 (en) | 1996-10-22 | 1998-04-30 | Abb Power T & D Company Inc. | Energy meter with power quality monitoring and diagnostic systems |
US7227350B2 (en) | 2004-03-18 | 2007-06-05 | Elster Electricity, Llc | Bias technique for electric utility meter |
US7315162B2 (en) | 2004-03-18 | 2008-01-01 | Elster Electricity, Llc | Reducing power consumption of electrical meters |
US7355867B2 (en) | 2004-08-17 | 2008-04-08 | Elster Electricity, Llc | Power supply for an electric meter having a high-voltage regulator that limits the voltage applied to certain components below the normal operating input voltage |
JP6339890B2 (ja) * | 2014-08-05 | 2018-06-06 | アルプス電気株式会社 | 電流センサ |
US11774469B2 (en) | 2021-05-06 | 2023-10-03 | Jetperch Llc | Auto ranging ammeter with accurate measurement during range changes |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140408A (en) * | 1962-06-20 | 1964-07-07 | Products Inc Comp | Switch with plural inputs to, and plural feedback paths from, an operational amplifier |
US3346697A (en) * | 1965-12-28 | 1967-10-10 | Bell Telephone Labor Inc | Time division hybrid with bilateral gain |
US3516002A (en) * | 1967-05-02 | 1970-06-02 | Hughes Aircraft Co | Gain and drift compensated amplifier |
US3780273A (en) * | 1972-06-12 | 1973-12-18 | Leeds & Northrup Co | Analog-to-digital wattmeter multiplier |
-
1974
- 1974-09-13 US US05/505,721 patent/US3976941A/en not_active Expired - Lifetime
-
1975
- 1975-08-07 CA CA233,188A patent/CA1035840A/en not_active Expired
- 1975-09-04 DE DE19752539344 patent/DE2539344A1/de active Pending
- 1975-09-10 CH CH1172975A patent/CH600344A5/xx not_active IP Right Cessation
- 1975-09-12 JP JP50110119A patent/JPS5154469A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
DE2539344A1 (de) | 1976-04-01 |
JPS5154469A (xx) | 1976-05-13 |
CA1035840A (en) | 1978-08-01 |
US3976941A (en) | 1976-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |