GB2392027A - An arrangement and a method in a dc system - Google Patents
An arrangement and a method in a dc systemInfo
- Publication number
- GB2392027A GB2392027A GB0328010A GB0328010A GB2392027A GB 2392027 A GB2392027 A GB 2392027A GB 0328010 A GB0328010 A GB 0328010A GB 0328010 A GB0328010 A GB 0328010A GB 2392027 A GB2392027 A GB 2392027A
- Authority
- GB
- United Kingdom
- Prior art keywords
- signal
- circuit
- voltage
- current
- alerting
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
A DC system (31) is fed by an external power source (6, 7). When power fails, circuits (32) in the system are to be rapidly alerted (S1) to save unstored information, before the input DC (S4) has fallen too low. A capacitor device (34) is connected to the system input (30) and a current (I1) in the capacitor connection (37) is detected (36). When power fails the current (I1) flows from the capacitor device (34) and a detection circuit (36) generates a corresponding signal. This signal is delayed a predetermined time interval into an alerting signal (S1), which is transmitted to the DC circuit (32). Delaying the signal before the alerting ensures that a very short fail in the DC voltage (S4), or ripple in this voltage, will not unnecessarily alert the DC circuit (32) to start saving information.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/SE2001/001454 WO2003001644A1 (en) | 2001-06-21 | 2001-06-21 | An arrangement and a method in a dc system |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0328010D0 GB0328010D0 (en) | 2004-01-07 |
GB2392027A true GB2392027A (en) | 2004-02-18 |
GB2392027B GB2392027B (en) | 2005-01-19 |
Family
ID=20283879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0328010A Expired - Fee Related GB2392027B (en) | 2001-06-21 | 2001-06-21 | An arrangement and a method in a dc system |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2392027B (en) |
WO (1) | WO2003001644A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10334047A1 (en) * | 2003-07-25 | 2005-02-24 | Clariant Gmbh | Adsorbate from phyllosilicate and its use |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3919183A1 (en) * | 1989-06-12 | 1990-12-13 | Siemens Ag | CIRCUIT FOR MONITORING THE VOLTAGE OF A SELECTED DC POWER SUPPLY IN A REDUNDANT POWER SUPPLY SYSTEM |
EP0458510A2 (en) * | 1990-05-23 | 1991-11-27 | Richard A. Martin | Circuit for sustaining power supply output following momentary interruption of commercial A.C. power |
US5771161A (en) * | 1997-01-10 | 1998-06-23 | Northrop Grumman Corporation | Uninterruptable capability for an active power line conditioner |
US5978236A (en) * | 1997-01-31 | 1999-11-02 | Silverline Power Conversion Llc | Uninterruptible power supply with direction of DC electrical energy depending on predetermined ratio |
US6108217A (en) * | 1999-10-19 | 2000-08-22 | Ivi Checkmate Ltd. | Backup power circuit |
-
2001
- 2001-06-21 WO PCT/SE2001/001454 patent/WO2003001644A1/en active Search and Examination
- 2001-06-21 GB GB0328010A patent/GB2392027B/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3919183A1 (en) * | 1989-06-12 | 1990-12-13 | Siemens Ag | CIRCUIT FOR MONITORING THE VOLTAGE OF A SELECTED DC POWER SUPPLY IN A REDUNDANT POWER SUPPLY SYSTEM |
EP0458510A2 (en) * | 1990-05-23 | 1991-11-27 | Richard A. Martin | Circuit for sustaining power supply output following momentary interruption of commercial A.C. power |
US5771161A (en) * | 1997-01-10 | 1998-06-23 | Northrop Grumman Corporation | Uninterruptable capability for an active power line conditioner |
US5978236A (en) * | 1997-01-31 | 1999-11-02 | Silverline Power Conversion Llc | Uninterruptible power supply with direction of DC electrical energy depending on predetermined ratio |
US6108217A (en) * | 1999-10-19 | 2000-08-22 | Ivi Checkmate Ltd. | Backup power circuit |
Also Published As
Publication number | Publication date |
---|---|
WO2003001644A1 (en) | 2003-01-03 |
GB0328010D0 (en) | 2004-01-07 |
GB2392027B (en) | 2005-01-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR910016133A (en) | Semiconductor integrated circuit | |
US20100254057A1 (en) | Overload power cut-off device and method thereof | |
TW200509509A (en) | Semiconductor device including DC-DC converter control circuit | |
TW200514352A (en) | Semiconductor IC device and power source voltage monitoring system | |
US6717828B2 (en) | Power semiconductor device | |
EP1306740A3 (en) | A semiconductor circuit, and method for operating the same | |
GB2392027A (en) | An arrangement and a method in a dc system | |
US10018685B2 (en) | Method for operating a magnetic field detector circuit and a magnetic field detector circuit | |
JP2008067518A (en) | Inverter apparatus and air conditioner | |
GB0201467D0 (en) | A method of reducing inrush current to USB peripherals without using high value electrolytic capacity | |
EP1152321A3 (en) | Electronic control apparatus having a plurality of power source circuits | |
WO2004082306A3 (en) | System for providing backup power to an electronic device | |
JPH011971A (en) | Battery capacity alarm device | |
JP3779133B2 (en) | Digital input device | |
JPH0937484A (en) | Method for detecting life of battery, and detector | |
ATE500653T1 (en) | CONTROL UNIT | |
JPH06181527A (en) | Vtr incorporated type camera | |
TW342473B (en) | Redundant-type stabilizing power supply device | |
JPS63103400A (en) | Detection circuit | |
JPH0847163A (en) | Communication apparatus with power failure warning function | |
JPS6075131A (en) | Voice defeat circuit | |
US20030226045A1 (en) | Device and method for processing a control action from a user | |
JPS6066626A (en) | Output decrease detector of dc voltage power source | |
JPH0476711A (en) | Memory backup power supply circuit | |
JPS5841087U (en) | power protection circuit |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20150621 |