DE69027118D1 - Spannung-frequenz quadratierte schaltung - Google Patents
Spannung-frequenz quadratierte schaltungInfo
- Publication number
- DE69027118D1 DE69027118D1 DE69027118T DE69027118T DE69027118D1 DE 69027118 D1 DE69027118 D1 DE 69027118D1 DE 69027118 T DE69027118 T DE 69027118T DE 69027118 T DE69027118 T DE 69027118T DE 69027118 D1 DE69027118 D1 DE 69027118D1
- Authority
- DE
- Germany
- Prior art keywords
- voltage
- frequency square
- square switching
- switching
- frequency
- 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 - Fee Related
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/252—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques using analogue/digital converters of the type with conversion of voltage or current into frequency and measuring of this frequency
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/093—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means
- H02H3/0935—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current with timing means the timing being determined by numerical means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
- Breakers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/331,926 US5019936A (en) | 1989-03-31 | 1989-03-31 | Voltage-to-frequency squared circuit |
PCT/US1990/001261 WO1990012438A1 (en) | 1989-03-31 | 1990-03-07 | Voltage-to-frequency squared circuit |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69027118D1 true DE69027118D1 (de) | 1996-06-27 |
DE69027118T2 DE69027118T2 (de) | 1996-10-24 |
Family
ID=23295948
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69027118T Expired - Fee Related DE69027118T2 (de) | 1989-03-31 | 1990-03-07 | Spannung-frequenz quadratierte schaltung |
Country Status (7)
Country | Link |
---|---|
US (1) | US5019936A (de) |
EP (1) | EP0465567B1 (de) |
JP (1) | JP2595136B2 (de) |
CA (1) | CA2011903A1 (de) |
DE (1) | DE69027118T2 (de) |
MX (1) | MX170582B (de) |
WO (1) | WO1990012438A1 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3532237B2 (ja) * | 1994-03-04 | 2004-05-31 | 株式会社東芝 | 電圧/周波数変換装置 |
JP3218911B2 (ja) * | 1995-03-31 | 2001-10-15 | 株式会社デンソー | 波形整形装置 |
EP2010276B1 (de) * | 2006-04-26 | 2014-01-22 | Covidien LP | Mehrfachmodus-mikroporationsvorrichtung |
CN101728973A (zh) * | 2008-10-31 | 2010-06-09 | 鸿富锦精密工业(深圳)有限公司 | 驱动装置及其过载保护方法 |
JP5369969B2 (ja) | 2009-07-31 | 2013-12-18 | 日本電気株式会社 | 電源ノイズ測定回路および測定方法 |
US11632105B2 (en) | 2021-03-31 | 2023-04-18 | Analog Devices International Unlimited Company | Fast overcurrent detection in battery management system |
US20230037712A1 (en) * | 2021-08-02 | 2023-02-09 | Analog Devices International Unlimited Company | Shunt voltage to digital power sequence conversion with auto-calibrated transconductor, error cancelling reference and current to power converter |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4027203A (en) * | 1975-03-06 | 1977-05-31 | Mcgraw-Edison Company | Protective switch device for electrical distribution systems |
US4005283A (en) * | 1975-09-22 | 1977-01-25 | Rockwell International Corporation | Squaring circuit apparatus |
US4038695A (en) * | 1976-04-19 | 1977-07-26 | General Electric Company | Static trip unit for circuit protective devices |
US4115829A (en) * | 1977-05-06 | 1978-09-19 | General Electric Company | Overcurrent and ground fault responsive trip unit for circuit breakers |
US4259706A (en) * | 1978-10-06 | 1981-03-31 | Gould Inc. | Solid state relay |
US4513342A (en) * | 1983-01-31 | 1985-04-23 | General Electric Company | Current-squared-time (i2 t) protection system |
US4658323A (en) * | 1985-06-10 | 1987-04-14 | General Electric Company | RMS calculation circuit for digital circuit interrupters |
US4782422A (en) * | 1987-07-27 | 1988-11-01 | Sundstrand Corporation | I2 t monitoring circuit |
-
1989
- 1989-03-31 US US07/331,926 patent/US5019936A/en not_active Expired - Fee Related
-
1990
- 1990-03-07 WO PCT/US1990/001261 patent/WO1990012438A1/en active IP Right Grant
- 1990-03-07 EP EP90905933A patent/EP0465567B1/de not_active Expired - Lifetime
- 1990-03-07 DE DE69027118T patent/DE69027118T2/de not_active Expired - Fee Related
- 1990-03-07 JP JP2505838A patent/JP2595136B2/ja not_active Expired - Fee Related
- 1990-03-09 CA CA002011903A patent/CA2011903A1/en not_active Abandoned
- 1990-03-30 MX MX020139A patent/MX170582B/es unknown
Also Published As
Publication number | Publication date |
---|---|
JP2595136B2 (ja) | 1997-03-26 |
JPH04506565A (ja) | 1992-11-12 |
DE69027118T2 (de) | 1996-10-24 |
EP0465567B1 (de) | 1996-05-22 |
WO1990012438A1 (en) | 1990-10-18 |
EP0465567A4 (en) | 1992-08-26 |
CA2011903A1 (en) | 1990-09-30 |
EP0465567A1 (de) | 1992-01-15 |
US5019936A (en) | 1991-05-28 |
MX170582B (es) | 1993-08-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |