Hot Topic:
Circuit protection

EDN

• Circuit-protection strategies for improving LED reliability and lifetime
  
  Author: By Faraz Hasan, Tyco Electronics' Circuit Protection Business Unit | Date: Mar 18, 2010
  Feature Circuit- protection strategies for...the need for circuit protection in LED-based...team up with overvoltage protection to...Electronics' Circuit Protection Business Unit...polymeric-positive-temperature-coefficient) circuit- protection devices have...a variety of overvoltage-protection...overcurrent/ overvoltage devices, in...help provide overvoltage protection in...coordinated circuit- protection design for an...damage from overvoltage and overcurrent...transient- overvoltage suppression...overtemperature, and overvoltage faults, including...sustained abnormal overvoltage or limited-current...event of an overvoltage transient...Electronics' Circuit Protection Business Unit...
• Editor’s welcome
  
  Author: By Margery Conner, Technical Editor | Date: Mar 18, 2010
  The LED-technology sector continues to be a growing industry. But its complex design requires integration of several potentially problematic components.
• EDN: Information, News, & Business Strategy for Electronics Design Engineers
  
  EDN.com is a comprehensive information source for the EOEM (electronics original equipment manufacturer) segment, providing in-depth technical information for electronics design engineers and news and strategic business insight for executives.
• Use simultaneous-sampling ADCs to monitor three-phase ac line power
  
  Author: By Martin Mason, Maxim Integrated Products | Date: Aug 18, 2009
  Multichannel simultaneous-sampling analog-to-digital converters trim your costs while simplifying power-monitoring systems.
• Circuit protection for outdoor LED lighting
  
  Author: By Phillip Havens, Littelfuse | Date: Mar 3, 2010
  Feature Circuit protection for outdoor LED...add the proper circuit protection to guard against the most severe overvoltage conditions...against transient overvoltage events. Two...of transient overvoltage have long been...susceptible to overvoltage transients caused...immediate threat is overvoltage failures. In...where effective circuit protection will increase...case of handling overvoltage events and dealing...automatically when the overvoltage is gone. However...trigger of an overvoltage event and reset...than MOVs. Overvoltage devices have...activated based on an overvoltage condition. The...deals with proper circuit protection for the LEDs...devices provide overvoltage protection to...Therefore, when the overvoltage protection device...
• FPGA Gurus | EDN
  
  FPGAs have made their presence felt for years at the Optical Fibers in Communications/National Fiber Optics Engineers Conference (OFC/NFOEC), so it... • read more
• FROM EDN EUROPE: Linear regulators face extinction
  
  Author: By David Marsh, Contributing Technical Editor |
  ...800-msec auto-restart cycle that provides overload and short- circuit protection until the fault condition recedes. Cost-wise, estimates...switch-element stress. Protection mechanisms guard against overvoltage, overtemperature and overcurrent on a cycle-by-cycle...monitor conditions including supply-line under- and overvoltage, chip overtemperature, and current in the output-driver...
• In-Depth Technical Features on EDN: Electronic Design, News, Strategy
  
  EDN's technical features, written either by our staff engineer-editors or industry experts, dive deeply into diverse electronics topics, delivering how-to information, detailed expertise, and exclusive analyses of trends in enabling technologies and engineering.
• Draw the line: Isolation shields systems from shocking surprises
  
  Author: By Paul Rako, Technical Editor | Date: Sep 3, 2009
  ...the resulting break in the leakage current produces an overvoltage at the site of the discontinuity, generating an electric...insulation for the correct operation of the equipment OVERVOLTAGE-INSTALLATION CATEGORY: coordination by identifying the...
• To cool high-power LED assemblies, manufacturers such as TI, National Semiconductor, Bergquist, TT...
  
  To cool high-power LED assemblies, manufacturers such as TI, National Semiconductor, Bergquist, TT Electronics IRC Div., Cool Innovations, Nuventix have developed drivers, metal-clad substrates and heat sinks to move the surrounding air. + read more.
• Use analog switches to multiplex your signals
  
  Author: By Paul Rako, Technical Editor | Date: Jun 12, 2008
  Pay careful attention to analog switches and multiplexers, which are critical components of the signal path. Designers should understand the applications and specifications of these important analog parts.
• EDN on Components: Outdoor LEDs and circuit protection, 3D prints, more...
  
  Date: Mar 11, 2010
  New Exclusive Webcast - Phase Change Memory: New Technology to Change Memory Usage Models “New Technology to Change Memory Usage Models” is the final webcast of the Phase Change Memory webcast trilogy.
• Designing protective circuitry for DSL loops: Beware of pitfalls
  
  Author: By Phillip Havens, Littelfuse LP | Date: Dec 5, 2008
  ...protection from a variety of overvoltage conditions, but the need to...Normal Signals A glossary of overvoltage-protection devices A glossary...circuit design and choice of circuit- protection devices must take these differences...transient-voltage-suppression) diodes for overvoltage, and fuses and PTC (positive-temperature-coefficient...and ring to ground to provide overvoltage protection, preceding them with...transformer, another TSPD can provide overvoltage protection. The ATU-C...suppliers that offer all the circuit- protection technologies and are therefore...the other. A glossary of overvoltage-protection devices GDTs...use primarily as the principal overvoltage protector in telecom and datacom...properly coordinate them with an overvoltage protector, they offer cost-effective...resistors on line cards that use overvoltage protectors that cannot withstand...
• Flyback transformer enables high power-factor and converter efficiency
  
  Author: By Cecil Deisch, Tellabs Operations Inc | Date: Mar 6, 2008
  Ever-tightening regulations require a power factor of at least 0.9 and high efficiency for offline power supplies. This new switching-converter topology uses a flyback transformer and accomplishes both these goals in one stage.
• Lithium-ion battery charger provides USB OTG capability
  
  Author: By Jinrong Qian, PhD, Texas Instruments | Date: Jan 22, 2009
  With users demanding communication among their mobile devices, supporting the power needs of USB OTG (On-The-Go) becomes a requirement. Optimize your battery chargers for a current-limited source, such as USB, and for supporting USB OTG specifications.
• USB battery-charger designs meet new industry standards
  
  Author: By Takashi Kanamori and George Paparrizos, Summit Microelectronics | Date: Feb 21, 2008
  ...Reference 5). In addition, this charging IC incorporates input overvoltage protection that suspends operation when the charger voltage...2V. Additional protection features, including battery- overvoltage and -overcurrent protection, meet the industry’s strict...
• Dual-input charger IC operates from USB or wall adapter
  
  Author: By Paul Rako, Technical Editor | Date: Jan 15, 2009
  Advanced Analogic Technologies has introduced the AAT3691 dual-input battery-charger IC with overvoltage protection to 28V with a response time of less than 1 µsec.
• Fairchild Semiconductor FSA800: USB accessory switch includes negative-swing capability
  
  Date: Jan 28, 2010
  EDN's technical editors highlight notable new products including analog and digital ICs, power components, sensors, passives, boards and systems, software, and more. To submit products for consideration, please see the information on our Editorial Opportunities page.
• TDK Lambda PXA and PXB: 15W dc/dc converters come in open-frame and shielded-metal-case options
  
  Date: Aug 31, 2009
  ...on/off and output adjustment, including trim, single-output models, and devices with overvoltage and overcurrent/ short- circuit protection are also available. Measuring 1×1-in. each, devices in the PXA and PXB series cost...
• Fast-settling picoammeter circuit handles wide voltage range
  
  Author: Rob Whitehouse, Analog Devices, Wilmington, MA; Edited by Brad Thompson and Fran Granville | Date: Sep 14, 2006
  ...diode carries a 45V maximum rating, and the buffers provide overvoltage protection by limiting the voltages applied across the diodes...followers Q 6B and Q 7B . Transistors Q 6A and Q 7A provide overvoltage protection when a defective device under test short-circuits...