Supercapacitors based on carbon nanotube technology are about to make the jump from laboratory curiosity to mass production. NAWA Technologies in France says it will soon begin the mass production phase of its next-generation ultracapacitor, the Ultra Fast Carbon Battery. Over the coming year, a first-of-its-kind ultracapacitor cell production line will be installed at the […]
Rugged AC filter capacitors conform to UL 810
TDK Corporation announced a new series of AC filter capacitors that are UL 810 approved at the component level and carry the CE mark. The capacitors of the B32354S3 series are designed for a rated voltage of 350 V AC and are available with capacitance values of 10 µF to 40 µF. The lead spacing […]
Working with higher voltages, Part 1: Voltage boosters
Whether for efficiency or due to the device physics, many applications require voltages ranging in the tens, hundreds, or even thousands of volts; the circuits which produce these voltages start with basic charge pumps and extend to voltage multipliers with simple schematics but many subtleties. Lower-voltage circuitry is the trend, with ICs and designs operating […]
Axial-leaded, hermetically sealed wet electrolytic tantalum capacitors
AVX Corporation announced that several of its TWA Series axial-leaded, hermetically sealed wet electrolytic tantalum capacitors are now qualified to MIL-PRF-39006/33A. Designed to deliver high-reliability, high-CV performance in harsh-environment military, defense, avionics, and industrial applications, including satellites, DC/DC power supplies, power converters, bulk energy storage, and pule power circuits, the new TWA M39006 Series capacitors have […]
Stacked polyester capacitors meet 85°C/85 percent RH requirements
Cornell Dubilier announces availability of its Type RA multilayered film capacitors for 125 °C operation. Type RA capacitors are constructed using stacked metallized polyester protected with an impregnated sealant, which eliminates the need for an external case. This package style offers the highest energy density technology available for switching power supplies, DC to DC converters […]
Educational opportunity: Pre-APEC “Capacitors in Power Electronics” Workshop
The Power Sources Manufacturers Association (PSMA) and the IEEE Power Electronics Society (IEEE PELS) are jointly sponsoring an all-day workshop titled, “The Impact of Wideband Technologies on Application of Capacitors–A Deep Dive on Capacitor Technology,” on Saturday, March 16, 2019, the day before the start of and in the same venue as APEC 2019 at […]
Choosing a capacitor? Ripple current capability matters as much as Farads
by Derick Stephens, KEMET Corporation Selecting capacitors for decoupling and filtering in power circuits may seem like a basic chore for electronics designers. Getting it right, however, can critically influence reliability and longevity, but is complicated by the fact that parameters tend to change with factors such as the temperature and operating frequency. Proper attention should […]
Capacitors in renewable energy
It pays to know the distinguishing features of electrolytic, film, and super capacitors when planning applications where energy efficiency is important. MORRIE GOLDMAN, ILLINOIS CAPACITOR INC. RENEWABLE ENERGY SYSTEMS all have a common need for high-efficiency power circuits. Whether the original source of energy is light, heat, or mechanical motion, ancillary circuitry will probably either […]
AC filter capacitors cover 250 to 400 Vac with capacitance range of 1 to 70 µF
TDK Corporation has extended its EPCOS B32754 to B32758 series of AC filter capacitors. They now cover a range of voltages from 250 V AC to 400 V AC and offer capacitances of between 1 µF and 70 µF. The capacitors comply with IEC 61071: 2007 and are extremely robust, even at high humidity. This […]
Conduction cooled capacitors include direct mounting options
Illinois Capacitor has expanded their lineup of their HC and LC Series Conduction Cooled Capacitors, to include new direct mounting options on the HC Series. These devices are a fit for resonant power circuitry having very high current demands. With the rugged appearance of mechanical components, they have ratings of up to 1,200 amps RMS and […]
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