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Topic: AC DC


  
  AC-DC Voltage Conversion
Two indicators that a device actually uses DC inside are: the ability of the device to run on batteries, and the presence of a device outside the unit that powers it.
AC adaptors are really DC power supplies that converts the AC of the wall into DC for the device.
In a nutshell, the switching power supply uses a transistor switch and a closed feedback loop to produce DC output that is properly regulated regardless of the load on it, with only the amount of AC power required to draw the DC load being taken from the utility.
www.pcguide.com /ref/power/sup/funcACDC-c.html   (852 words)

  
 Alternating Current (AC) Electricity - Succeed in Physical Science
AC is created by an AC electric generator, which determines the frequency.
AC electricity alternates back-and-forth in direction 50 or 60 times per second, according to the electrical system in the country.
AC electricity was proven to be better for supplying electricity than DC, primarily because the voltages can be transformed.
www.school-for-champions.com /science/ac.htm   (1044 words)

  
 DC DC Converters & AC DC Power Supplies
We're your DC DC Converter and power supply leaders.
Calex offers hundreds of single, dual, triple, and quad output DC DC converters and AC DC power supplies as standard catalog products for fast delivery.
We offer a full line of PLC analog I/O modules, analog transmitters, modular strain gage and load cell signal conditioning equipment, DC alarms, thermocouple amplifiers, and a wide variety of mounting hardware.
www.calex.com   (140 words)

  
 Electrical Generator - AC or DC   (Site not responding. Last check: 2007-10-22)
Electrical Generator - AC or DC Electrical Generator - AC or DC This Java applet simulates a generator which is reduced to the most important parts for clarity.
Instead of an armature with many windings and iron core, there is only a single rectangular conductor loop; the axis the loop rotates on is omitted.
The buttons in the top right corner allow you to choose an AC generator (without commutator), or a DC generator (with commutator).
www.sciencejoywagon.com /physicszone/lesson/otherpub/wfendt/generatorengl.htm   (230 words)

  
 Electrical Motor Manufacturers, AC Motor, DC Motor Servo, Resolver, Encoder Manufacturers
Homopolar DC Motor: A direct-current (dc) generator whose poles have the same polarity, with respect to the armature.
Commutator DC Motor: In a direct-current (dc) motor, generator, or rotating selector, an arrangement of parallel metal bars or strips on a rotating drum.
PM DC Motor: [Permanent Magnet] motor uses a permanent magnet instead of armature windings are mounted on the rotor.Permanent Magnet [PM] motors are normally small and produce little horsepower.
www.interfacebus.com /motors.html   (390 words)

  
 Sidebar: Leaving the AC/DC options open - Computerworld   (Site not responding. Last check: 2007-10-22)
Rackable claims that DC power allows servers to cool by moving the AC-to-DC conversion process away from the servers and up to the top of the rack, where heat can be vented.
The setup combines DC power supplies that feed individual servers within its racks with the appropriate voltages (3.3, 5 or 12 volts) and AC-to-DC rectifiers positioned at the top of each rack that feed those local DC power supplies.
AC power supplies are a significant source of waste heat within servers because the process of converting power is inefficient.
www.computerworld.com /hardwaretopics/hardware/story/0,10801,101535,00.html?source=x407   (1130 words)

  
 The American Experience | Edison's Miracle of Light | AC - DC: What's the Difference?
At that time there were 121 Edison power stations scattered across the United States delivering DC electricity to its customers.
But DC had a great limitation -- namely, that power plants could only send DC electricity about a mile before the electricity began to lose power.
Rather, it's a simple explanation that shows the difference between AC and DC.
www.pbs.org /wgbh/amex/edison/sfeature/acdc.html   (162 words)

  
 motion motors drives controllers servos steppers encoders variable speeds frequency velocity ac dc electric systems ...
A broad definition of motion control would be something like "converting a source of power to move something in a controlled manner".
AC Tech Drives Variable speed AC motor drives
Saftronics AC inverters, AC and DC drives, soft start, reduced voltage motor starter,
www.htservices.com /Tools/MotionDrives/index.htm   (691 words)

  
 The educational encyclopedia, Electric motors   (Site not responding. Last check: 2007-10-22)
Aandrijftechniek en aandrijfsystemen magnetisme, motoren, generatoren, DC motor, AC motor, AC generator,
Motor types tutorial AC motors, DC motors, brushless DC motors, servo motors, stepper motors, linear motors, PWM
Motor tutorial AC motors, DC motors, brushless DC motors, servo motors, stepper motors, linear motors, PWM
users.telenet.be /educypedia/electronics/motor.htm   (493 words)

  
 Motion Controllers, Motor Control, AC Motors, DC Motors, Servo Motors, Power Transmission Products. Suppliers and ...   (Site not responding. Last check: 2007-10-22)
Propulse from Slovenia - Both these companies produce 3 phase AC Motors and controllers for use in EV applications.
AC Tech introduces SC Series sub-micro family of drives
SemiPower Systems introduces revolutionary new PowerBlok and DriveBlok series of brushless DC and AC controllers....
www.motorcontrol.com /startpage.htm   (507 words)

  
 AC/DC Websites   (Site not responding. Last check: 2007-10-22)
AC DC Photos - Photos from Chicago Tweeter Center in 2001.
Ac Dc Tabs - An alphebetic listing of Ac Dc tabs.
LyricsFreak: Ac Dc - An alphebetical listing of song lyrics.
www.iq451.com /music/acdc-web.htm   (747 words)

  
 AC/DC Cover Versions & AC/DC Cover bands - Latest News
AC/DC Tribute band Dirty DC (England) have a few gigs lined up for October,November and December.
AC/DC Tribute band Dirty DC are playing Crail, Fife, Scotland on the 14th July.
Scottish Rockers Travis performed a cover version of AC/DC's Back in Black during their concert at the Leeds Town Hall (May 28th), The show was recorded by Radio 1.
www.crabsodyinblue.com /acdccovernews.htm   (3131 words)

  
 power grounding surge protection supplies UPS factory laboratory manufacturing industrial automation systems control ...
Corcom -- EMI / RFI AC / DC power filters
CR Magnetics -- current transformers, transducers, hall effect DC current sensors
MTE -- RFI / EMI filters for AC / DC motor drives and other electronic equipment
www.htservices.com /Links/PowerGrounding/index.htm   (756 words)

  
 Bardac: AC Drives, DC Drives & Retrofit Solutions
Bardac: AC Drives, DC Drives and Retrofit Solutions
AC DRIVES, DC DRIVES, MOTORS and CONTROL TECHNOLOGY
Single-phase DC 3-phase digital DC 3-phase analog DC Modulus packaged DC DC servo drives
www.bardac.com   (227 words)

  
 AC/DC Reviews
Fly on the Wall (Deluxe Digipak) [ORIGINAL RECORDING REMASTERED] by Ac, Dc - Amazon.com 20 Sound Clips, and 31 Customer Reviews.
TNT [IMPORT] by Ac, Dc - Amazon.com Review, and 5 Customer Reviews.
Who Made Who (Deluxe Digipak) [ORIGINAL RECORDING REMASTERED] by Ac, Dc - Amazon.com 18 Sound Clips, and 46 Customer Reviews.
www.iq451.com /music/acdc.htm   (1610 words)

  
 Electric Power Generator Info and Sales Division: TEMCo Three Phase and Single Phase generators 3 phase generator.
In the world of high end and reliable long lasting generators, TEMCo keeps up with the ever changing market so that we can always offer you the best solutions for your electricity needs.
Work with us to put together your single phase or three phase, AC or DC electricity solution and put it in place today.
TEMCo is your best choice to look for electric power 3 phase generators, Phase Converters, electric motors, transformers and three phase converters.
www.electricpowergenerator.com   (351 words)

  
 AC/DC Cover Versions & AC/DC Cover bands
Dirty DC are a UK AC/DC tribute band from the Kent area.
Whole Lotta DC Whole lotta Rosies are an all girl AC/DC tribute band from L.A. web site www.therosies.com
Some of the above information taken from Howard Johnson's book "Get you Jumbo Jet out of my airport
www.crabsodyinblue.com /acdccoverbands.htm   (331 words)

  
 AC/DC Latest News
The October issue of Hard Rock Mag (French Magazine) includes a CD with 11 AC/DC covers:
Ride On (D/C World), Highway To Hell (Quiet Riot), Hell Ain't A Bad Place To Be (Vulcain), Overdose (Exodus), Walk All Over You (Killers), Dirty Deeds Done Dirt Cheap (Ryker's), Whole Lotta Rosie (High Voltage), Cold Hearted Man (Panama), Live Wire (Annihilator), Squealer (Genitorturers), TnT (Six Feet Under).
The Hard Rock Magazine has 32 pages including lots of pictures from 1974-2000, the Grand Rapids concert report, a SUL collector guide and a contest and an interview with Dave Evans.
www.crabsodyinblue.com /acdcarchivenewsjuly-dec2000.htm   (4274 words)

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