Power Supplies

    October 2019
    Moving from Electromechanical to Solid-State in Relays and Circuit Breakers

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    Figure 1: Contact wear in an electromechanical relay

    As a mature technology, electromechanical relays and circuit breakers are well established, however they continue to suffer from some inherent weaknesses. Moving to solid-state technology can address these but introduces its own challenges. So, what is the right solution? In the movies, whenever the lights go
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    Date:
    10/31/2019
    Bipolar Power Supplies Based on the Common Buck Converter

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    Figure 1. Electrical schematic of the two terminal, bipolar, adjustable power supply.

    A bench-top power supply (PS) tends to have an even number of terminals (ignoring the chassis port)—with one positive terminal and one negative terminal. Using a bench-top supply to produce a positive polarity output is easy: set the minus output to GND and the positive output voltage at the plus output. It is
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    Date:
    10/29/2019
    TTI Stocks Vishay Hybrid Energy Storage Capacitors
    Fort Worth, Texas – TTI, Inc., has stock for immediate shipment of the MAL219690113E3, a 90F, 2.8V Hybrid energy storage cap from Vishay. The Vishay 196 HVC series exhibits more than three times the energy density of a traditional supercapacitor and is available in 4F, 15F and 90F versions. Useful life is u
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    Date:
    10/29/2019
    Gateview Announces Next-Generation PDU Availability
    WAKE FOREST, N.C. -- Gateview Technologies announced the availability of its next-generation, rack-mount Power Distribution Unit (PDU)— PowerLOK. The new single- and three-phase rack PDU keeps servers running efficiently and at a lower cost compared to traditional legacy powerstrips offered on the market today. In
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    Date:
    10/22/2019
    TVS Diodes Feature High Peak Power and Current Ratings
    RIVERSIDE, Calif. - Bourns, Inc., introduced its Model 15KPA-SD-Q transient voltage suppressor (TVS) diode series. Bourns designed its latest TVS diodes for use in DC bus clamping applications, and to protect sensitive electronics applications against overvoltage transients. In addition, these new protection de
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    Date:
    10/22/2019
    Compact Form Factors for DC Link Applications
    TDK Corporation has extended the portfolio of EPCOS film capacitors for DC link applications with the B3277*X/Y/Z series. The new capacitors feature compact dimensions, high capacitance density and high current capability. They are designed for rated voltages of between 500 and 1200 V DC. The series offers numerous stan
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    Date:
    10/15/2019
    Traco Power - new 0.6 and 1A POL converters
    The TSR-WI line is a set of non-isolated POL converter series with an ultra wide 8:1 input voltage range which come in standard SIP-3 packages. Covering the majority of standard bus- and battery voltages this POL converter line is a versatile solution for many applications in distributed power systems where different inp
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    Date:
    10/15/2019

    Power Systems Design

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    Power Systems Design

    Published by Power Systems (PSD) serves all aspects of the Power Electronics market including but not limited to Power Conversion, Power Management, Intelligent and Embedded Motion, Automotive, Renewable Energy, Energy Efficiency and Lighting. PSD is published 10x per year in English with separate print editions for Europe and North America and is published 6x per year in China. PSD Apps are available for Android & iOS. Additionally qualified power engineering professionals may subscribe and receive PSD daily PowerSurge newsletters.