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Negative capacitor enable higher voltage, high efficient system while operating at lower voltage
By Science Daily Posted On 9.4.2019


source: Science Daily news

by DOE/Argonne National Laboratory, original written by Jared Sagoff. Researchers have created a permanent static ‘negative capacitor,’ a device believed to have been in violation of physical laws until about a decade ago. Newly devised static negative capacitor could improve computing and yield more energy-efficient computers. (more…)


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Why low ESR matters in capacitor design
By Capacitor Faks and EPCI Posted On 11.2.2019


Source: Capacitor Faks blog, EPCI

by Anthony Kenny (Capacitor Faks) and Tomas Zednicek (EPCI). A practical capacitor is a non-ideal component. Its circuit model contains series inductance (ESL) and series resistance (ESR). Although equivalent series resistance is often shown in circuit models as a constant value, it varies depending on operating conditions. ESR is resistance from a combination of energy loss mechanisms under specific operating conditions. (more…)


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Effects of ESL on capacitor performance
By Capacitor Faks and EPCI Posted On 8.2.2019


Source: Capacitor Faks blog

Capacitors are widely used in electronic circuits for storing and managing energy. Typical applications include filtering, decoupling, energy storage, and tuning. Some applications such as decoupling demand low impedance, high ripple current capability, and excellent surge performance. Inductance is one of the key parameters to consider when selecting a capacitor for high speed digital circuits. (more…)


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The ‘relativity’ of High Q capacitors
By Electronics Specifier Posted On 22.11.2018


Source: Electronics Specifier article

by Johanson Technology.

For many high power RF applications, the ‘Q factor’ of embedded capacitors is one of the most important characteristics in the design of circuits. This includes products such as cellular/telecomm equipment, MRI coils, plasma generators, lasers and other medical, military and industrial electronics. (more…)


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What is a Dielectric Constant of Plastic Materials ?
By Omnexus Posted On 11.9.2018


Source: Omnexus tech note

Omnexus technical note describes dielectric constant of plastic materials, how to calculate it and factors affecting it.

(more…)


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Capacitors – Derating and Category Concepts
By EPCI Posted On 11.7.2018


ABC of CLR

EPCI online handbook on C,L,R Passive Components

Chapter C: Capacitors

EPCI licenced content by:

[1] EPCI European Passive Components Institute experts original articles
[2] CLR Passive Components Handbook by P-O.Fagerholt*

*used under EPCI copyright from CTI Corporation, USA

(more…)


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Capacitors – Energy Content and Electromagnetic Force
By EPCI Posted On 11.7.2018


ABC of CLR

EPCI online handbook on C,L,R Passive Components

Chapter C: Capacitors

EPCI licenced content by:

[1] EPCI European Passive Components Institute experts original articles
[2] CLR Passive Components Handbook by P-O.Fagerholt*

*used under EPCI copyright from CTI Corporation, USA

(more…)


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Don’t let ESR waste power and cook capacitors
Posted On 30.5.2018


Source: EDN article

Bill Schweber explains some basic understanding of capacitor’s ESR and why it is of interest. (more…)


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Capacitors – Losses (ESR, IMP, DF, Q)
By EPCI Posted On 25.5.2018


ABC of CLR

EPCI online handbook on C,L,R Passive Components

Chapter C: Capacitors

EPCI licenced content by:

[1] EPCI European Passive Components Institute experts original articles
[2] CLR Passive Components Handbook by P-O.Fagerholt*

*used under EPCI copyright from CTI Corporation, USA

(more…)


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Capacitors – Insulation Resistance
By EPCI Posted On 25.5.2018


ABC of CLR

EPCI online handbook on C,L,R Passive Components

Chapter C: Capacitors

EPCI licenced content by:

[1] EPCI European Passive Components Institute experts original articles
[2] CLR Passive Components Handbook by P-O.Fagerholt*

*used under EPCI copyright from CTI Corporation, USA

(more…)


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