Switched mode power supplies

Switched mode power supplies - Factbites
Where results make sense
About us | Why use us? | Reviews | PR | Contact us

Topic: Switched mode power supplies

Note: these results are not from the primary (high quality) database.

In the News (Wed 11 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Power Supply Troubleshooting & Repair
		This book covers switched-mode power supplies that you may encounter in modern consumer electronic products, and focuses on the most common supplies found throughout the industry.
		Power Supply Troubleshooting & Repair is designed to provide technicians with a better understanding of how switched-mode power supplies operate.
		After reading through this book, you will have a complete understanding of switched-mode power supplies and will be able to troubleshoot and repair them yourself within your own shop or home.
	web.idirect.com /a1parts/public/power_supply_t&r.html (249 words)

	Switched-mode power supply - Wikipedia, the free encyclopedia
		This means that basic switched mode power supplies tend to produce more harmonics in the mains power line and have a worse power factor than other types of appliances.
		A switched-mode power supply, switch mode power supply, or SMPS, is an electronic power supply unit (PSU) that incorporates a switching regulator — an internal control circuit that switches the load current rapidly on and off in order to stabilise the output voltage.
		Linear power supplies regulate their output by using a higher voltage in the initial stages and then expending some of it as heat to improve the power quality.
	en.wikipedia.org /wiki/Switched-mode_power_supply (2105 words)

	Power supply - Wikipedia, the free encyclopedia
		Constraints that commonly affect power supplies are the amount of power they can supply, how long they can supply it for without needing some kind of refueling or recharging, how stable their output voltage or current is under varying load conditions, and whether they provide continuous power or pulses.
		A power supply unit (sometimes abbreviated power supply or PSU) is a device or system that supplies electrical or other types of energy to an output load or group of loads.
		The power supply is a small box inside the computer; it is an important part of a computer because it provides power in a form that is suitable for every other component inside or attached to the computer in order for it to work.
	en.wikipedia.org /wiki/Power_supply (424 words)

	Switched Mode Power Supplies:ECN Asia
		Switched mode power supplies were first use during the time when valve or tube car radios needed the large HT supply to be generated from an automobile power system of nominally 12V DC.
		While more reliable, efficient and durable than those of the past, today’s switched mode power supply is basically the sames with the exception of the replacement with solid state electronics of the electro-mechanical component that ‘broke down’ the 12V DC supply.
		Inside the unit are discrete components mounted on a metal-frame circuit board that enables the 30W model to provide a higher power density per cm3 than similar power supplies.
	www.ecnasiamag.com /article.asp?id=1713 (550 words)

	16163.990401&ELEMENT_SET=DECL
		Switched-mode power supplies are frequently used for devices which have a normal relatively high power mode and a low-power mode, such as television sets or computer monitors, for example, having a standby mode.
		The switched-mode power supply of the invention operates on the series resonant converter principle and it comprises a first capacitor on the primary side to which both a voltage modulated at the mains frequency and a voltage modulated at the switching frequency of the switched-mode power supply are applied.
		Switched-mode power supply according to Claim 9, characterized in that a coil (L31) which influences the frequency and two capacitors (C18, C19) which are connected as a voltage divider and influence the frequency are arranged in the series resonant circuit.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=99/16163.990401&ELEMENT_SET=DECL (4378 words)

	History of Switched Mode Power Supplies
		The ascendency of switched-mode power supplies is directly linked to the development of fast high voltage switching power transistors in 1967 (49) and, to a lesser extent, on developments in ceramic ferrite materials and capacitor technology.
		The switched-mode power supply market is now well established within the electronics sector (43, 44), with a large number of power supply manufacturers world-wide providing a wide range of units for the commercial and military markets.
		Power supplies working from the mains for the commercial market were still largely linear forms, with isolation, a necessary requirement for safety, being achieved by using a bulky mains frequency transformer.
	www.steve-w.dircon.co.uk /fleadh/mphil/history.htm (3252 words)

	Jansen Patents
		Switched mode power supplies are frequently used in electronic equipment for producing a regulated dc output from an ac mains input.
		A power supply according to claim 4, wherein said switch-on control means further includes time-out means for initiating turn on of the switching device by said turn-on means a predetermined time after when switching device was last on unless the latter is earlier turned on again by said turn-on means.
		A power supply according to claim 14, wherein said switch-on control means further includes time-out means for initiating turn on of the switching device by said turn-on means a predetermined time after when switching device was last on unless the latter is earlier turned on again by said turn-on means.
	www.elpac.com /resources/patents/5,682,306.html (6045 words)

	Switching-Mode Power Supply Websites
		He is writing an Interactive Power Electronics Online Text which includes a section on Switch-Mode Power Supplies that contains interactive Java Applets that illustrate circuit operation.
		Power electronics authors on my must-read list, whose work I try to follow, are also listed if they have a home page.
		It caters to the practical aspects of power electronics and serves as a conference where the working power supply designer can go for a yearly refresher in his/her craft.
	www.smpstech.com /websites.htm (1897 words)

	Articles - Inductor
		As inductors tend to be larger and heavier than other components, their use has been reduced in modern equipment; solid state switching power supplies eliminate large transformers, for instance, and circuits are designed to use only small inductors, if any; larger values are simulated by use of gyrator circuits.
		An inductor is used as the energy storage device in a switched-mode power supply.
		The inductor is energized for a specific fraction of the regulator´s switching frequency, and de-energized for the remainder of the cycle.
	www.sinoz.com /articles/Inductor (1266 words)

	SPICE
		It is intended to power any offline Switch-Mode Power Supplies from a few hundred of mW up to 70W.
		Switched models are made of various blocks assembled together to build standard CM or VM PWM controllers.
		Ben-Yaakov models are based on the Switched Inductor Model (SIM) concept as described by many publications at: http://www.ee.bgu.ac.il/~pel.
	perso.wanadoo.fr /cbasso/Spice.htm (1502 words)

	Switched Mode Power Supplies and Switched Mode Power Supply
		The third member of the Micro Automation family, SITOP switched mode power supplies, provide the right DC voltage for most control applications worldwide.
		Power Supplies, Part A: Linear Power Supplies, Dc-Dc Converters, Part B : Switched-Mode Power Supplies (Studies in Electrical and Electronic Enginee)
		High power switch mode AC to DC power supplies for single and three phase input applications where hight efficiency, precise regulation and a high degree of packing density and light weight are required.
	www.etesters.com /search/product/listAll.cfm/keyword/Switched_Mode_Power_Supplies (241 words)

	New ICs Lead to Small and Efficient Power Adapters - 12/1/2005 - ECN
		Applications that require 4W or less of power have traditionally relied on small power supplies based on a series-pass regulator circuit such as the one shown in Figure 1.
		Power conversion ICs, like the one used here, reduce parts count through the integration of a high-voltage MOSFET and low-voltage control circuitry on a single chip.
		In effect, skipping cycles reduces the effective switching frequency as a load's current demand drops, thus further reducing no-load power consumption and increasing efficiency.
	www.ecnmag.com /article/CA6288552.html (1381 words)

	Switched mode power supply
		I need to make two switched mode power supplies with proper bypassing for rf-range the supply should work at 3.3 V with a power of 2.5 W, the design should be as small as possible can anyone supply me with resources
		Another idea, you can use low voltage logic inverters the work from 3.3 volt and use as many gates as you want to make the switching power supply to obtain 2.5 watt.
		If you're concerned about noise but want efficiency then you can use a switching power supply to step down to about 5V then use a LDO linear power supply to step down to 3.3V.
	www.edaboard.com /ftopic81486.html (702 words)

	Product Range: Power Supplies
		Output 12V 8A DC A fully regulated 12 volt 8 amp power supply housed in a rugged aluminium extruded enclosure.
		Input 180-270V AC Output 12V 15A DC The PSM1215 is an industrial grade, fully regulated 12 volt 15 amp output power supply housed in a rugged aluminium enclosure.
		Input 180-270V AC Output 12V 30A DC The PSM1230 is an industrial grade, fully regulated 12 volt 30 amp output power supply housed in a rugged aluminium enclosure.
	www.morven.co.uk /view-range.asp?PID=3&VRANGE=24V (1324 words)

	PTM6395 Ultra Compact Switched Mode Power Supply Unit
		The PTM 6395 switched mode power supply has been designed in conjunction with the TMD range of medium power Ring-Loop Travelling Wave Tubes (TWTs), for operation at duty cycles up to 4%.
		PTM6395 Ultra Compact Switched Mode Power Supply Unit
		Home : Microwave Tubes : HV Power Supplies : Transmitter Subsystems : Instrumentation Amplifiers
	www.tmd.co.uk /power/ptm6395.asp (140 words)

	Find in a Library: Power supply troubleshooting & repair : practical guide to switched-mode power supplies
		Power supply troubleshooting & repair : practical guide to switched-mode power supplies
		Find in a Library: Power supply troubleshooting & repair : practical guide to switched-mode power supplies
		WorldCat is provided by OCLC Online Computer Library Center, Inc. on behalf of its member libraries.
	worldcatlibraries.org /wcpa/ow/f3581235d6ce163ea19afeb4da09e526.html (83 words)

	Low cost, Compact Switch Mode Power Supply - SMPS
		Click for 5V DC 4A Switched Mode Power Supply
		I have a quantity of 280, very good quality 5V 4A power supplies.
		Low cost, Compact Switch Mode Power Supply (SMPS), Suitable for use with Radio Equipment, Ham Radio, CB, Communication Equipment, hobbyist, Car Radio Repair etc.
	www.zygo.btinternet.co.uk /offer001.html (307 words)

	Switched Mode Power Supply
		For everything related to switched mode power supplies, visit powersupplies.net
		This program by National Semiconductor allows the user to design a switched mode power supply using one of National's "Simple Switcher" chips.
		Switched Mode Power Supply Notes by Brad Suppanz
	www.rfcascade.com /switcher.html (121 words)

	David Hamill
		Power electronics, switched mode power supplies, dc-dc converters
		He was affiliated to the Surrey Space Centre and conducted research in the areas of power electronics and nonlinear dynamics, with particular application to dc-dc converters.
		PDF] M. Tavakoli Bina and D.C. Hamill, "Optimizing a discrete switching pattern using two simulated annealing algorithms", IEEE Workshop on Computers in Power Electronics, Blacksburg VA, pp.
	www.hamill.co.uk /david-hamill.php (2276 words)

	PC Power Supply
		Power supplies in today's computers are known as SWITCHMODE or Switching Mode power supplies and require a load to continue to operate after being switched on (the term switching mode actually applies to the technique of A/C to D/C conversion and not to the power up action).
		These power supplies are called SWITCHMODE or SWITCHING MODE power supplies and must have a load to function -- hence the 10 ohm 10 watt load resistor on the 5 volt line.
		Many of the R/C folks are converting power supplies for the purpose of driving field chargers and are finding that voltage levels below 12 volts are sometimes insufficient to power their chargers.
	web2.murraystate.edu /andy.batts/ps/POWERSUPPLY.HTM (1548 words)

	PC Power Supply
		Power supplies in today's computers are known as SWITCHMODE or Switching Mode power supplies and require a load to continue to operate after being switched on (the term switching mode actually applies to the technique of A/C to D/C conversion and not to the power up action).
		These power supplies are called SWITCHMODE or SWITCHING MODE power supplies and must have a load to function -- hence the 10 ohm 10 watt load resistor on the 5 volt line.
		Many of the R/C folks are converting power supplies for the purpose of driving field chargers and are finding that voltage levels below 12 volts are sometimes insufficient to power their chargers.
	web2.murraystate.edu /andy.batts/ps/powersupply.htm (1539 words)

	Switched-mode power supply - Wikipedia, the free encyclopedia
		This means that basic switched mode power supplies tend to produce more harmonics in the mains power line and have a worse power factor than other types of appliances.
		A switched-mode power supply, or SMPS, is an electronic power supply unit (PSU) that incorporates a switching regulator — an internal control circuit that switches the load current rapidly on and off in order to stabilise the output voltage.
		If the output is required to be isolated from the input, as is usually the case in mains power supplies, the inverted AC is used to drive the primary winding of a high-frequency transformer.
	en.wikipedia.org /wiki/Switched-mode_power_supply (1665 words)

	Power Supplies, Manual Metal Arc (MMA) Welding, Single Phase - Worldwide
		Glassman Europe Ltd, Tadley, Hants, UK Manufacturers and suppliers of connectors, high voltage; power supply systems, power supply (DC high current) systems, power supply (DC high voltage) systems, power supply (switched mode) systems and relays, high voltage
		Schneider Electric Ltd, Maidenhead, Berks, UK Manufacturers of control systems, variable speed drive, electronic component, control systems component (electronic), process controller/control systems and power supply (switched mode) systems/unit.
		XP plc, Reading, UK XP is committed to being one of Europe's leading providers of power solutions, including AC-DC power supplies, DC-DC converters, standby systems and UPS.
	www.kellysearch.com /qz-product-70874.html (1665 words)

	Power Converters And 12v Battery Chargers BatteriesIX.info
		EMS Power provide one of the most comprehensive ranges of batteries, chargers and power supplies in the UK Including;Batteries Chargers, Batteries Chargers Switch Mode, Battery Chargers Linear, DC-DC Converters, Power Supply Switched Mode, Power...
		Power Supplies (SPS), DC to DC Power Converters, Fast Recovery Battery Chargers, Mains Failure Power Supplies, Emergency...
		DLS Series power converters and battery chargers provide quality AC/DC power conversion for recreational vehicles, solar energy systems, and other applications.
	www.batteriesix.info /batteries/power-converters-and-12v-battery-chargers.html (989 words)

	PC Power Supply
		Power supplies in today's computers are known as SWITCHMODE or Switching Mode power supplies and require a load to continue to operate after being switched on (the term switching mode actually applies to the technique of A/C to D/C conversion and not to the power up action).
		Dell power supplies manufactured between 1996 and 2000 do not follow the industry standard pinout and color codes.
		If used as a power source for the micro and sub-micro servos, you must be careful not to drive the servo to either endpoint to avoid stripping the smaller gears in these units.
	web2.murraystate.edu /andy.batts/ps/POWERSUPPLY.HTM (1539 words)

	About TESLAco - Optimum Power Conversion, Inc.
		Founded in 1979, TESLAco gained its reputation as a hi-tech company specialized in the custom design of the high efficiency and high power density switched-mode power supplies for both commercial and military applications.
		He also won the Franklin Institute Edward Longstreth Medal Award in 1991 for "pioneering and expediting the development of integrated magnetics and switched-mode power conversion".
		The Laboratory is well equipped with sophisticated computerized instruments needed for advanced power supply development.
	www.teslaco.com /supplies.htm (338 words)

	Custom Power Supplies and Custom Power Converters,power supply repairs,power supply repair,Custom Design,switched mode power supplies,medical power supplies,battery chargers,switchmode,switch mode power supplies
		Custom Power Supplies and Custom Power Converters,power supply repairs,power supply repair,Custom Design,switched mode power supplies,medical power supplies,battery chargers,switchmode,switch mode power supplies
	www.ferrus-power.co.uk (21 words)

	Library
		Title: Switched Mode Power Supplies: Design and Construction, 2nd ed.
		Title: Power Supplies, Switching Regulators, Inverters and Converters, 1st ed.
		Title: Design and Build Electronic Power Supplies, 1st ed.
	www.powerdesigners.com /InfoWeb/library/index.shtm (21 words)

	ipedia.com: Power supply Article
		Conversion of another form of electrical power into the desired form (typically converting 120 or 240 volt alternating current supplied by a utility company (see electricity generation) into low-voltage direct current for electronic devices); see switched-mode power supply, linear regulator, rectifier, inverter (electrical)
		A power supply unit (sometimes abbreviated power supply or PSU) is a device that supplies electrical power to a device or group of devices.
		A power supply unit is a device that supplies electrical power to a device or group of devices.
	www.ipedia.com /power_supply_1.html (234 words)

	RF Cafe - Power Supply Websites
		Switched mode rectifiers for Telecom, power supplies for railway signaling, high rate industrial chargers up to 500V DC 2000 Amps, AC/DC distribution panels, AMF panels, bus ducts.
		714-289-0055 / Orange, CA EMI/EMC filters, power supplies, transformers, inductors.
		Power levels range from a few watts to twenty thousand watts in both single and multiple output configurations from 3.3 Volts to 500 volts.
	www.rfcafe.com /vendors/components/powersupply_links.htm (234 words)

Try your search on: Qwika (all wikis)

Topic: Switched mode power supplies

Ads by Google

Related Topics

In the News (Wed 11 Nov 09)