Results 71 to 80 of about 4,953 (161)

A robust floating nanoammeter

open access: yes, 2008
A circuit capable of measuring nanoampere currents while floating at voltages up to at least 25kV is described. The circuit relays its output to ground potential via an optical fiber. We particularly emphasize the design and construction techniques which
Hinds, E. A.   +4 more
core   +1 more source

A CMOS Spiking Neuron for Brain-Inspired Neural Networks with Resistive Synapses and In-Situ Learning [PDF]

open access: yes, 2015
Nanoscale resistive memories are expected to fuel dense integration of electronic synapses for large-scale neuromorphic system. To realize such a brain-inspired computing chip, a compact CMOS spiking neuron that performs in-situ learning and computing ...
Balagopal, Sakkarapani   +3 more
core   +3 more sources

Preparation of zinc-oxide and zinc-sulfide powders by controlled precipitation from aqueous-solution [PDF]

open access: yes, 1994
Resumo não disponível..
Jesus, Júlio D. Pedrosa de   +2 more
core   +2 more sources

Estudo da adsorção de dispersante à base de poliacrilato em um sistema varistor comercial: caracterização físico-química Study of polyacrylate adsorption in a commercial varistor system: characterization of the physical-chemistry properties

open access: yesCerâmica, 2005
Um dos grandes desafios no processamento cerâmico é a obtenção de dispersões de partículas estáveis e homogêneas contendo materiais com diferentes características físicas e químicas, como densidade, área de superfície específica, distribuição de tamanho ...
S. L. M. Brito, D. Gouvêa, R. Ganzella
doaj   +1 more source

Studies of in-service and laboratory failures of metal-oxide distribution surge arresters [PDF]

open access: yes, 2003
We describe the findings from tests and inspections of arresters withdrawn from service, the results of laboratory studies with multipulse lightning currents and high temporary over-voltages, and comparisons of in-service and laboratory failure modes. We
Darveniza, M., Saha, T. K., Wright, S.
core  

Effect of Co3O4 doping and sintering temperature on optical energy band gap properties in Zn-Bi-Ti-O varistor ceramics [PDF]

open access: yes, 2017
It is necessary to investigate the electronic states of ceramic based ZnO vasristor and effect of doped impurities at different concentration. Band gap (Eg) of the ceramic (99-x) mol% ZnO+0.5 mol% Bi2O3+0.5 mol% TiO2+ xCo3O4 where x = 0, 0.2, 0.4, 0.6 ...
Mohd Ghazali, Mohd Sabri   +5 more
core   +1 more source

Engenharia de microestrutura em varistor à base de ZnO: evidências de homogeneidade e correlação com reações químicas Microstructure engineering in the ZnO based varistor: evidence of homogeneity and correlation with chemical reactions

open access: yesCerâmica, 2005
A influência de reações químicas específicas sobre o desenvolvimento microestrutural em varistores à base de ZnO é abordada a partir de um enfoque inovador.
M. A. L. Nobre   +3 more
doaj   +1 more source

Nonohmic behavior of SnO2.MnO2-based ceramics

open access: yesMaterials Research, 2003
The present paper describes the nonohmic behavior of the SnO2.MnO-based system and analyzes the influence of the sintering time and the Nb2O5 concentration on this system's electrical properties.
Marcelo O. Orlandi   +3 more
doaj   +1 more source

Diseño de un prototipo de teléfono público de prepago 197 ICE [PDF]

open access: yes, 2006
Proyecto de Graduación (Licenciatura en Ingeniería Electrónica). Instituto Tecnológico de Costa Rica.Escuela de Ingeniería Electrónica, 2006.El Instituto Costarricense de Electricidad (ICE), tiene como objetivo el desarrollo y prestamo de servicios en ...
Fernández-Salas, José Arturo   +1 more
core  

Diffusion of the 65Zn radiotracer in ZnO polycrystalline ceramics

open access: yesMaterials Research, 2003
Zinc self-diffusion coefficients were measured in polycrystalline ZnO of high density (>99% of the theoretical density) and of high purity (> 99.999%).
Maria Auxiliadora das Neves Nogueira   +2 more
doaj   +1 more source

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