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Choosing Ceramic Capacitors

It may seem a bit mundane but choosing ceramic capacitors can cause some problems and confusion. Ceramic capacitors have taken over from aluminum electrolytic capacitors and tantalum electrolytics…

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Keystone

Printed circuit board card guides

A new assortment of durable Nylon card guides for vertical mount circuit boards are among the latest circuit board mounting devices available from Keystone Electronics Corp. Engineered to…

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Dialog Semiconductor extends power management leadership in China

DA9210 sub-PMIC powers MediaTek MT6795 processor in HTC One M9+ and E9+ Android based smartphones Dialog Semiconductor plc (FWB:DLG), a provider of highly integrated power management, AC/DC power…

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GlobTek’s up-to 60 watt universal input regulated switchmode AC-DC open frame power supply

GTM43007 represents GlobTek’s entry into ultra-small range of open frame ruggedized power converters, which adds to its existing broad line of wall plug-in, desktop and other open-frame power…

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USB AC adapter/power supply certified to ANSI/AAMI ES60601-1

USB AC Adapter/Power Supply Certified to ANSI/AAMI ES60601-1 for the United States and Canada and EN/IEC 60601-1, 3rd edition for Europe, Asia, and Africa and is rated up…

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Understanding and using charge amplifiers

A charge amplifier is not the most common type of amplifier, but very useful in the right circumstances, it is really a current integrator which produces a voltage…

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Gallery: Cool technology at APEC 2015

The recently concluded Applied Power Electronics Conference and Exposition in Charlotte, N.C. showcased a variety of new developments in wide bandgap semiconductors, LEDs, power converter topologies, and much…

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DC backup power in new Ultra Capacitor Modules

Altech Corp. now sells a new DC back-up power device. Called DC/UPS Ultra Capacitor Modules, they can be used in place of a battery for backup power. They are DIN-rail mountable, virtually maintenance free and carry none of the hazards of a battery. Voltages include 12V and 24Vdc from 1,000 up to 10,000 W of energy in

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Power converters with GaN

by Alex Lidow, CEO, Efficient Power Conversion Corp. It can be tricky to analyze power supply designs incorporating GaN power devices. Here are the basics of calculating losses…

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High switching frequencies come to laptop chargers

New designs for switch-mode power supplies are pushing frequencies higher as a way of cramming circuitry into smaller and smaller volumes. An indication of the trend can be…

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Move over, wave power — Vortex device aims to harvest energy from water

Pilot projects aimed at generating electrical energy from the motion of ocean waves have gotten a lot of press. The Scottish government, for example, has now approved the…

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Better barriers make lithium batteries hard to beat

An advanced barrier between the electrodes in lithium-ion batteries could help head off fires and overheating that occasionally arises in laptops or industrial applications. The barrier uses nanofibers…

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Gallium Nitride power FETs go into mass production

Fujitsu Semiconductor group’s CMOS-compatible, 150-mm wafer fab in Japan has started mass production of Gallium Nitride (GaN) power devices for switching applications. The facility is providing GaN foundry…

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Power supply makers get ready for tighter energy efficiency regs

Tougher Energy Star standards kick in next year. Some manufacturers may not be able to handle its more stringent mandates. The latest round of energy efficiency standards for…

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Leland-Teschler

The next generation of power electronics engineers

by Leland Teschler, Executive Editor, @DW_LeeTeschler Who do you suppose can ace a ten-question quiz about using power transistors? We asked ourselves that question recently when we ran…

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Behlman-Electronics-VPXtra500M-dc-to-dc-power-supply

Thermal management and cost of ownership in power systems

by Jerry Hovdestad, Director COTS Engineering, Behlman Electronics To an engineer, power management is also thermal management. Excess heat generated by power systems places additional burdens on their…

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Small batteries pack big wallop for wireless devices

by Sol Jacobs, Tadiran Batteries Battery makers have devised chemistries that put a lot of energy in a tiny volume. Generally speaking, every penny counts when it comes…

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Choking off EMI/RFI in off-line switchers

by Jim Earley, President, Premier Magnetics Electromagnetic interference (EMI) and radio frequency interference (RFI) are natural byproducts of switching power supplies. Much of this noise arises as a…

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Cool calculations

by Steve Griffiths, Manager of Technical Sales and Marketing, Ametek, Dynamic Fluid Solutions Business Unit It pays to do a back-of-the-envelope thermal analysis before cranking up a CFD…

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Working with Wirewounds

by Kory Schroeder, Director of Product Marketing and Engineering, Stackpole Electronics Inc. For high currents, axial-leaded wirewound resistors are often good candidates because they can handle up to…

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How to evaluate cutting-edge power semiconductors

by Ryo Takeda and Alan Wadsworth, Keysight Technologies Investments in power semiconductor devices continue to grow. Performance and reliability also improve each year through the employment of new…

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Selecting power supply connector pins

by David Norton, TDK-Lambda Americas Designers can avoid reliability problems by acquainting themselves with the way connector pin materials stand up to repeated use and corrosion. Examine the…

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Carrying the Heat Away from Power Module PCB Designs

ShareBy Jerome Johnston Power system designers are always seeking higher power capability built on smaller footprints. This is especially true for datacenter servers and LTE basestations that support…

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RV8 Solid State Relay

IDEC’s solid state relay for high repetition and power requirements

IDEC Corporation announces the addition of the RV8S solid state interface relays to its existing RV8 DIN rail product line. The RV8S features 100mA to 3A switching capability in a compact 6mm wide space. Other leading RV8S features include high switching cycles, extended operating life and high-speed load switching. A common application is as an

MethodeTH

Methode SmartPower Stack

Methode Electronics’ Power Solutions Group, a division of Methode Electronics, Inc.(NYSE: MEI), a global manufacturer of custom designed electro-mechanical devices, announced its SmartPower Stack™ family of power conversion products is now TUV-Rheinland recognized for use per UL508c requirements. These products are capable of power conversion outputs from 30kW up to 100kW in both DC/DC (single