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Power Entry Module
{{Unreferenced, date=March 2011 A power entry module (PEM) is an electromechanical component used in electrical appliances, integrating the appliance inlet with other components such as: * a switch, possibly including integrated or remote bowden cable actuation; * a circuit breaker, possibly including overload, overcurrent, or undercurrent protection, as well as remote triggering; * an appliance fuse holder; * a voltage selector; * an electromagnetic interference line filter; * an appliance outlet. Advantages of a power entry module over individual components: * compact dimensions; * unitized, standardized product with pre-assembled individual components; * efficient mounting; * alternative designs with similar dimensions may be substituted without major re-engineering; * protected, pre-wired, tested, and certified power components. Power entry modules are used to save labor in manufacturing electrical and electronic equipment powered by an external source, such as the AC p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Entry Module
{{Unreferenced, date=March 2011 A power entry module (PEM) is an electromechanical component used in electrical appliances, integrating the appliance inlet with other components such as: * a switch, possibly including integrated or remote bowden cable actuation; * a circuit breaker, possibly including overload, overcurrent, or undercurrent protection, as well as remote triggering; * an appliance fuse holder; * a voltage selector; * an electromagnetic interference line filter; * an appliance outlet. Advantages of a power entry module over individual components: * compact dimensions; * unitized, standardized product with pre-assembled individual components; * efficient mounting; * alternative designs with similar dimensions may be substituted without major re-engineering; * protected, pre-wired, tested, and certified power components. Power entry modules are used to save labor in manufacturing electrical and electronic equipment powered by an external source, such as the AC p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blade Connector
Components of an electrical circuit are electrically connected if an electric current can run between them through an electrical conductor. An electrical connector is an electromechanical device used to create an electrical connection between parts of an electrical circuit, or between different electrical circuits, thereby joining them into a larger circuit. Most electrical connectors have a genderi.e. the male component, called a ''plug'', connects to the female component, or ''socket''. The connection may be removable (as for portable equipment), require a tool for assembly and removal, or serve as a permanent electrical joint between two points. An adapter can be used to join dissimilar connectors. Thousands of configurations of connectors are manufactured for power, data, and audiovisual applications. Electrical connectors can be divided into four basic categories, differentiated by their function: * ''inline'' or ''cable'' connectors permanently attached to a cable, so it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telephone Exchange
A telephone exchange, telephone switch, or central office is a telecommunications system used in the public switched telephone network (PSTN) or in large enterprises. It interconnects telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers. In historical perspective, telecommunication terms have been used with different semantics over time. The term ''telephone exchange'' is often used synonymously with ''central office'', a Bell System term. Often, a ''central office'' is defined as a building used to house the inside plant equipment of potentially several telephone exchanges, each serving a certain geographical area. Such an area has also been referred to as the exchange or exchange area. In North America, a central office location may also be identified as a ''wire center'', designating a facility to which a telephone is connected and obtains dial tone. For business and billing purposes, telecommunication carriers defi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IEC 60601-1
IEC 60601 is a series of technical standards for the safety and essential performance of medical electrical equipment, published by the International Electrotechnical Commission. First published in 1977 and regularly updated and restructured, as of 2011 it consists of a general standard, about 10 collateral standards, and about 80 particular standards. General standard The general standard ''IEC 60601-1 – Medical electrical equipment – Part 1: General requirements for basic safety and essential performance'' – gives general requirements of the series of standards. 60601 is a widely accepted benchmark for medical electrical equipment and compliance with IEC60601-1 has become a requirement for the commercialisation of electrical medical equipment in many countries. Many companies view compliance with IEC 60601-1 as a requirement for most markets. This standard does not assure effectiveness of a medical device. In the US, evidence of effectiveness is required by the FDA and conf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UL 544
UL or Ul may refer to: Arts and media * UL (''The Belgariad''), one of the gods in David Eddings' fantasy saga ''The Belgariad'' * ''New Hampshire Union Leader'', a statewide daily newspaper in New Hampshire, US * Unwritten Law, an alternative rock band from Poway, California Businesses and organizations * Cambridge University Library or University Library, a library at numerous universities * SriLankan Airlines (IATA code UL) * UL (safety organization), an American worldwide safety consulting and certification company previously known as Underwriters Laboratories * Unia Lewicy a Polish political party * Unilever (stock symbol), a multinational corporation * Upplands Lokaltrafik, a Swedish transport company Universities In the United Kingdom * University of Lincoln * University of London * University of Leicester In the United States * University of Louisiana at Lafayette, Louisiana In other countries * Université Laval, Québec, Canada * University of Leoben, Austria * Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ampere
The ampere (, ; symbol: A), often shortened to amp,SI supports only the use of symbols and deprecates the use of abbreviations for units. is the unit of electric current in the International System of Units (SI). One ampere is equal to electrons worth of charge moving past a point in a second. It is named after French mathematician and physicist André-Marie Ampère (1775–1836), considered the father of electromagnetism along with Danish physicist Hans Christian Ørsted. As of the 2019 redefinition of the SI base units, the ampere is defined by fixing the elementary charge to be exactly C ( coulomb), which means an ampere is an electrical current equivalent to elementary charges moving every seconds or elementary charges moving in a second. Prior to the redefinition the ampere was defined as the current that would need to be passed through 2 parallel wires 1 metre apart to produce a magnetic force of newtons per metre. The earlier CGS system had two definitio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BSI Group
The British Standards Institution (BSI) is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses. History BSI was founded as the Engineering Standards Committee in London in 1901.Robert C McWilliam. BSI: The first hundred years. 2001. Thanet Press. London It subsequently extended its standardization work and became the British Engineering Standards Association in 1918, adopting the name British Standards Institution in 1931 after receiving a Royal Charter in 1929. In 1998 a revision of the Charter enabled the organization to diversify and acquire other businesses, and the trading name was changed to BSI Group. The Group now operates in 195 countries. The core business remains standards and standards related services, although the majority of the Group's revenue comes from management systems assessment and certification work. In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Verband Der Elektrotechnik, Elektronik Und Informationstechnik
The VDE e. V. (german: Verband der Elektrotechnik, Elektronik und Informationstechnik) is one of Europe’s largest technical-scientific associations with 36,000 members, including 1,300 corporate and institutional members and 8,000 students. The Association Organization With 36,000 members (including 1,300 companies) the VDE Association for Electrical, Electronic & Information Technologies is one of the largest technical and scientific associations in Europe. VDE embraces science, standardization work and product testing and certification under one roof. VDE is involved in technical knowledge transfers, research and promoting young talents in the technologies of electrical engineering, electronics and information technology and their applications. Other VDE activities include ensuring safety in electrical engineering, developing recognized technical regulations as national and international standards as well as testing and certifying electrical and electronic devices and sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Standards Association
The CSA Group (formerly the Canadian Standards Association; CSA) is a standards organization which develops standards in 57 areas. CSA publishes standards in print and electronic form, and provides training and advisory services. CSA is composed of representatives from industry, government, and consumer groups. CSA began as the Canadian Engineering Standards Association (CESA) in 1919, federally chartered to create standards. During World War I, lack of interoperability between technical resources led to the formation of a standards committee. CSA is accredited by the Standards Council of Canada, a crown corporation which promotes voluntary standardization in Canada. This accreditation verifies that CSA is competent to carry out standards development and certification functions, and is based on internationally recognised criteria and procedures. The CSA registered mark shows that a product has been independently tested and certified to meet recognized standards for safety or pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Underwriters Laboratories
The UL enterprise is a global safety science company headquartered in Northbrook, Illinois, composed of three organizations, UL Research Institutes, UL Standards & Engagement and UL Solutions. Established in 1894, the UL enterprise was founded as the Underwriters' Electrical Bureau (a bureau of the National Board of Fire Underwriters), and was known throughout the 20th century as Underwriters Laboratories. On January 1, 2012, Underwriters Laboratories became the parent company of a for-profit company in the U.S named UL LLC, a limited liability corporation, which took over the product testing and certification business. On June 26, 2022, the companies rebranded into three distinct organizations that make up the UL enterprise. UL Solutions partners with customers and stakeholders in more than 100 countries to help solve safety, security and sustainability challenges and is also responsible for managing and issuing the highly respected portfolio of UL Marks. The company is one of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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