GB1135345A - No break electrical changeover - Google Patents

No break electrical changeover

Info

Publication number
GB1135345A
GB1135345A GB47643/67A GB4764367A GB1135345A GB 1135345 A GB1135345 A GB 1135345A GB 47643/67 A GB47643/67 A GB 47643/67A GB 4764367 A GB4764367 A GB 4764367A GB 1135345 A GB1135345 A GB 1135345A
Authority
GB
United Kingdom
Prior art keywords
capacitor
load
zener diode
conductive
source
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
Application number
GB47643/67A
Inventor
Brian William Richards
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB47643/67A priority Critical patent/GB1135345A/en
Priority to DE1801936A priority patent/DE1801936C3/en
Priority to AT991568A priority patent/AT297803B/en
Priority to US768350A priority patent/US3493777A/en
Priority to BR203214/68A priority patent/BR6803214D0/en
Priority to FR1587137D priority patent/FR1587137A/fr
Priority to NL6814917A priority patent/NL6814917A/xx
Priority to BE722607D priority patent/BE722607A/xx
Publication of GB1135345A publication Critical patent/GB1135345A/en
Priority to JP979771A priority patent/JPS4722488B1/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/735—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/72—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region
    • H03K17/73—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices having more than two PN junctions; having more than three electrodes; having more than one electrode connected to the same conductivity region for dc voltages or currents
    • 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
    • Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
    • Y04S20/20—End-user application control systems

Abstract

1,135,345. Standby power supply systems. STANDARD TELEPHONES & CABLES Ltd. 19 Oct., 1967, No. 47643/67. Heading H2H. A standby power supply system of the " nobreak " type comprises two constant current supply sources 2, 3, each having a Zener diode and a capacitor 9, 11 and 10, 12 respectively connected across the output terminals thereof, the sources supplying a load 1 by way of silicon controlled rectifiers 4, 5. Closure of a switch 13 energizes the source 2 whereupon the capacitor 11 charges to a voltage determined by the Zener diode 9-say 600 volts. To connect the source 2 to the load 1 a pulse from a pulse generator 6 is applied to the S.C.R. 4 which is rendered conductive. The current in the load 1 is such as to maintain a voltage of 570 thereacross and the Zener diode 9 becomes non-conductive. When it is desired to supply the load 1 from the alternative source 3 the switch 14 is first closed to energize the source 3 thereby charging the capacitor 12 to a voltage determined by Zener diode 10, again 600 volts. Thus the S.C.R. 5 is forwardly biased by 30 volts and when a pulse from pulse generator 7 is applied to S.C.R. 5 it will conduct and the capacitor 12 will discharge into the load 1, thereby back-biasing the S.C.R. 4 which will then become non-conductive. When the capacitor 12 is discharged the Zener diode 10 becomes non-conductive and, because the S.C.R. 4 is now non-conductive, the capacitor 11 re-charges and the system is ready for a change-over of supply sources when required. The pulse generators 6, 7 are actuated manually or automatically from a control unit 8 which may include suitable alarm devices for each source.
GB47643/67A 1967-10-19 1967-10-19 No break electrical changeover Expired GB1135345A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
GB47643/67A GB1135345A (en) 1967-10-19 1967-10-19 No break electrical changeover
DE1801936A DE1801936C3 (en) 1967-10-19 1968-10-09 Switching arrangement
AT991568A AT297803B (en) 1967-10-19 1968-10-11 Circuit arrangement for uninterrupted switching of a feed line from a constant direct current feed source to an instant reserve of this kind
US768350A US3493777A (en) 1967-10-19 1968-10-17 No break electrical changeover
BR203214/68A BR6803214D0 (en) 1967-10-19 1968-10-17 INVERTER CIRCUIT WITHOUT INTERRUPTION
FR1587137D FR1587137A (en) 1967-10-19 1968-10-18
NL6814917A NL6814917A (en) 1967-10-19 1968-10-18
BE722607D BE722607A (en) 1967-10-19 1968-10-21
JP979771A JPS4722488B1 (en) 1967-10-19 1972-10-07

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB47643/67A GB1135345A (en) 1967-10-19 1967-10-19 No break electrical changeover

Publications (1)

Publication Number Publication Date
GB1135345A true GB1135345A (en) 1968-12-04

Family

ID=10445742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47643/67A Expired GB1135345A (en) 1967-10-19 1967-10-19 No break electrical changeover

Country Status (9)

Country Link
US (1) US3493777A (en)
JP (1) JPS4722488B1 (en)
AT (1) AT297803B (en)
BE (1) BE722607A (en)
BR (1) BR6803214D0 (en)
DE (1) DE1801936C3 (en)
FR (1) FR1587137A (en)
GB (1) GB1135345A (en)
NL (1) NL6814917A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620220A (en) * 1969-10-01 1971-11-16 Cordis Corp Cardiac pacer with redundant power supply
US4742243A (en) * 1983-03-30 1988-05-03 Zivan Zabar Power consolidation circuit using interrupted current techniques
US4644440A (en) * 1985-01-08 1987-02-17 Westinghouse Electric Corp. Redundant power supply arrangement with surge protection

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3135872A (en) * 1961-07-21 1964-06-02 Taylor Instrument Co Extremum control systems and extremum selectors therefor
US3360661A (en) * 1963-11-14 1967-12-26 Honeywell Inc Automatic and manual switching system in an electronic controller

Also Published As

Publication number Publication date
JPS4722488B1 (en) 1972-06-23
DE1801936C3 (en) 1975-12-04
FR1587137A (en) 1970-03-13
BR6803214D0 (en) 1973-01-04
NL6814917A (en) 1969-04-22
US3493777A (en) 1970-02-03
BE722607A (en) 1969-04-21
DE1801936B2 (en) 1975-04-17
AT297803B (en) 1972-04-10
DE1801936A1 (en) 1969-05-29

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