Results 91 to 100 of about 4,264 (203)

Consideration of surge arresters for low voltage mains applications [PDF]

open access: yes, 2012
The work presented in this report details the background to surge arresters and surge protective device components, viz., spark gaps, gas discharge tubes and metal oxide varistors.
Michalopoulos, Aristidis
core  

Influence of Sintering Temperature and ZrO2 Dopants on the Microstructure and Electrical Properties of Zinc Oxide Varistors

open access: yesIEEE Access, 2019
This paper investigated the effects of sintering temperature on the microstructure and electrical properties of ZrO2-doped zinc oxide (ZnO) varistor ceramics. The results show that, the additive ZrO2 exists as independent second phase between ZnO grains,
Pengkang Xie, Jianping Hu
doaj   +1 more source

INVESTIGATION OF EXPLOSION SAFETY OF DC POLYMER SURGE ARRESTERS 3.3 KV FOR TRACTION NETWORK OF RAILWAY TRANSPORT

open access: yesElectrical engineering & Electromechanics, 2019
In the testing laboratories of Ukraine, there is no high-voltage equipment of the necessary energy for testing surge arresters for explosion safety, which does not allow to estimate this indicator at the stage of development of prototypes.
Yu. N. Shumilov, V. I. Bondarenko
doaj   +1 more source

High current pulse transducer for metal-oxide surge arresters [PDF]

open access: yes, 2007
High-voltage arresters of 160 kV and higher voltage types based on zinc-oxide varistors are important and expensive devices. The main imperfection of existing devices for the varistors monitoring is necessity of human intervention to work with them.
Gurevich, Vladimir
core   +1 more source

Estudio de la región rica en Bi2O3 en el sistema binario ZnO-Bi2O3

open access: yesBoletín de la Sociedad Española de Cerámica y Vidrio, 2004
Ceramic materials based in the ZnO- Bi2O3 system have their principal application as varistors. The binary system ZnO-Bi2O3 is specially relevant to the formation of the microstructure responsable of the varistor behaviour.
Caballero, A. C.   +3 more
doaj  

Low distortion automatic phase control circuit [PDF]

open access: yes, 1974
A voltage controlled phase shifter is rendered substantially harmonic distortion free over a large dynamic input range by employing two oppositely poled, equally biased varactor diodes as the voltage controlled elements which adjust the phase shift ...
Hauge, G., Pederson, C. W.
core   +1 more source

The growth of ZnO crystals from the melt

open access: yes, 2008
The peculiar properties of zinc oxide (ZnO) make this material interesting for very different applications like light emitting diodes, lasers, and piezoelectric transducers.
Bates   +30 more
core   +1 more source

Hardening communication ports for survival in electrical overstress environments [PDF]

open access: yes
Greater attention is being focused on the protection of data I/O ports since both experience and lab tests have shown that components at these locations are extremely vulnerable to electrical overstress (EOS) in the form of transient voltages.
Clark, O. Melville
core   +1 more source

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