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Thyristor Product Catalog
Thyristor Product Catalog

... depending on p-n-p-n regenerative feedback. Thyristors are normally two- or three-terminal devices for either unidirectional or bidirectional circuit configurations. Thyristors can have many forms, but they have certain commonalities. All thyristors are solid state switches that are normally open ci ...
Service and Metering Guide
Service and Metering Guide

... If you are planning an electrical installation, your earliest contact with FortisBC will help ensure that your installation will be satisfactory to both the British Columbia Safety Authority and FortisBC. To arrange an inspection of an installation, please contact FortisBC at 1-866-4FORTIS (1-866-43 ...
Institutionen för systemteknik
Institutionen för systemteknik

... functioning of nodes. Nodes in wireless sensor networks should be capable of being dynamically reconfigured to perform various tasks is the need of the hour. In order to achieve flexibility in node functionality, it is common to adopt reconfigurable architecture for WSN nodes. FPGA-based architectur ...
welding dictionary
welding dictionary

... use a metal rod that was simultaneously the arc carrier and the welding additive, rather than the standard carbon electrode that had been used for arc welding up until that point. The first stick electrodes were not coated and were therefore difficult to weld with. Later on the electrodes were coate ...
Refrigerator Defrost Systems
Refrigerator Defrost Systems

... defrost cycle. This type of system performs the defrost cycle without regard for the actual cooling demand on the sealed system. A more efficient type of timed defrost is based on the amount of time the compressor runs. The timer only advances when the compressor is running. After the timer measures ...
technical specification for isolators
technical specification for isolators

... These fixed and moving contacts shall be able to carry the rated current continuously and the maximum fault current without any appreciable rise in temperature. The Isolator blades shall retain their form and straightness under all conditions of operation including all mechanical stress arising out ...
Module 03-New - Aviation Nepal
Module 03-New - Aviation Nepal

... Question Number. ...
Sensor Specifications
Sensor Specifications

Florida Department of Transportation
Florida Department of Transportation

... Proposed Specification: 7810100 Intelligent Transportation Systems – Dynamic Message Signs ...
User Manual/Handbook: Microphone Handbook Volume 1
User Manual/Handbook: Microphone Handbook Volume 1

... to provide sufficient background information for customers to get the best out of these products. It also gives adequate information for customers to be able to make informed and qualified decisions about the microphone products which are most suitable for their measurement requirements. These produ ...
SIPROTEC 5 – Devices Protection, Automation and Monitoring
SIPROTEC 5 – Devices Protection, Automation and Monitoring

... went into operation in Würzburg, Germany, in 1977. Consistent integration of protection and control functions for all SIPROTEC devices was the innovation step in the 90s. After the release of the IEC 61850 communication standard in 2004, Siemens was the first manufacturer worldwide to put a system w ...
DRAFT 0400 Installation Standard
DRAFT 0400 Installation Standard

... between the parties relating to its subject matter during the term of this Agreement. No modification to this Agreement will be binding, unless in writing and signed by an authorized representative of each party. Licensee may not assign or transfer this Agreement or any rights granted hereunder, by ...
Electrical Installations (III-1-3a)
Electrical Installations (III-1-3a)

... III - Part 1 ...
Specs Part I - Jaipur Vidyut Vitran Nigam Limited ,Government of
Specs Part I - Jaipur Vidyut Vitran Nigam Limited ,Government of

... For indoor panels, SWITCHGEAR (circuit breakers, CTs, PTs etc.) and controlgear (relays, meters etc.) shall be mounted on the same panel. A set of air insulated electrolytic copper bus bars having maximum current density 1.5 Amp./ mm2 with minimum cross sectional area of 720 mm2 with PVC sleeves or ...
NFPA 70E
NFPA 70E

... electrical installation or system. Its content has been intentionally limited in comparison to  the content of the NEC in order to apply to an electrical installation or system as part of an  employee's workplace. This standard is compatible with corresponding provisions of the  NEC, but is not inte ...
Chapter 3 - Electrical Installations - Rules and standards
Chapter 3 - Electrical Installations - Rules and standards

... The following Rules come into force on 1 January 2016. Alterations to the preceding Edition are marked by beams at the text margin. DNV GL SE (Germanischer Lloyd SE has on 29 January 2014 changed its name to DNV GL SE. Any references in this document to Germanischer Lloyd or GL shall therefore also ...
Characterization of Transition Edge Sensors for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope
Characterization of Transition Edge Sensors for the Millimeter Bolometer Array Camera on the Atacama Cosmology Telescope

... The Thevenin voltage and the equivalent impedance constructed from the transfer function measurements. The figure on the left shows both the real part (blue), the imaginary part (red), and the amplitude (dashed blue) of the Thevenin voltage, up to the factor C(f )/Vbias (f ) described in the text. T ...
AutoDise 6.2.3.7
AutoDise 6.2.3.7

... Prepared for Army CECOM Power Generation Branch by BRTRC Federal Solutions 8521 Leesburg Pike, Suite 500 Vienna, Virginia 22182 Authors: Barry Gresens and Joseph Cahill ...
Atlas Level 1 Calorimeter Trigger Common Merger eXtended module (CMX) Hardware Description
Atlas Level 1 Calorimeter Trigger Common Merger eXtended module (CMX) Hardware Description

... Figure 1: CMX block diagram for Base Function operation ........................................................................ 14 Figure 2: Resources available on the Virtex-6 XC6VLX550T ....................................................................... 18 Figure 3: CMX block diagram with TP ...
Contents - Invertek
Contents - Invertek

... Communications ______________________________________________________________________________________14 ...
Indoor HID - Acuity Brands
Indoor HID - Acuity Brands

HVAC Specification for Variable Speed Drives (VSDs) Project Name
HVAC Specification for Variable Speed Drives (VSDs) Project Name

... Communications ______________________________________________________________________________________14 ...
VSD Network Pump Cascade
VSD Network Pump Cascade

Horus User Manual - Merging Technologies
Horus User Manual - Merging Technologies

... capable of producing sound levels that could cause permanent hearing loss. Do not operate at a high volume level or at a level that is uncomfortable. If you experience any hearing loss or ringing in the ears, you should consult an audiologist. 6. The product should be located so that its location or ...
Horus User Manual - Merging Technologies
Horus User Manual - Merging Technologies

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Switched-mode power supply



A switched-mode power supply (switching-mode power supply, switch-mode power supply, SMPS, or switcher) is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, an SMPS transfers power from a source, like mains power, to a load, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high dissipation transitions, which minimizes wasted energy. Ideally, a switched-mode power supply dissipates no power. Voltage regulation is achieved by varying the ratio of on-to-off time. In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. This higher power conversion efficiency is an important advantage of a switched-mode power supply. Switched-mode power supplies may also be substantially smaller and lighter than a linear supply due to the smaller transformer size and weight.Switching regulators are used as replacements for linear regulators when higher efficiency, smaller size or lighter weight are required. They are, however, more complicated; their switching currents can cause electrical noise problems if not carefully suppressed, and simple designs may have a poor power factor.
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