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A fully integrated 0.5 -7 hz cmos bandpass amplifier
(UR. FING, 2004)
In this paper, the design methodology of a fully integrated gm-C, 0.5-7Hz band-pass amplifier is presented. The amplifier is designed to be employed in signal conditioning of a piezoelectric accelerometer, which is part ...
Determination of plasma velocity from light fluctuations in a cutting torch
(American Institute of Physics, 2009-11)
Measurements of plasma velocities in a 30 A high energy density cutting torch are reported. The velocity diagnostic is based on the analysis of the light fluctuations emitted by the arc which are assumed to propagate with ...
Modeling and Dynamic Analysis of an Electrical Helmholtz Resonator for Active Control of Resonant Noise
(2017-10-01)
This paper describes a theoretical and experimental investigation into an electrical Helmholtz resonator (EHR): that is, an active noise control (ANC) loudspeaker used in conjunction with a microphone and a feedback ...
Approximations of the inverse wavelet transform for analogue circuits
(2012)
We propose two approximations of the inverse wavelet transform implemented with a voltage adder and two analog filters. They work together with a set of scaled band-pass analog filters that perform the wavelet transform ...
Approximations of the inverse wavelet transform for analogue circuits
(2012)
We propose two approximations of the inverse wavelet transform implemented with a voltage adder and two analog filters. They work together with a set of scaled band-pass analog filters that perform the wavelet transform ...
Influência de parâmetros físicos e do processamento digital utilizado nos sinais oriundos do ensaio charpy instrumentado
(Universidade Estadual Paulista (Unesp), 2012-07-24)
In this work, was the influence of physical parameters evaluated (stiffness of the striker, length of the specimen, the geometry of the striker) on the magnitude of the interference present in the curves load vs. time and ...
Sistema autônomo tri-banda de aquisição e armazenamento de dados para caracterização de paisagem acústica submarina
(Universidade Federal do Rio de JaneiroBrasilInstituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de EngenhariaPrograma de Pós-Graduação em Engenharia OceânicaUFRJ, 2019)
Discriminadores para IFMS de 5 BITS baseados em filtros rejeita-banda em microfita
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Engenharia Eletrica, 2018)
Real-Time Digital PWM With Zero Baseband Distortion and Low Switching Frequency
(Ieee-inst Electrical Electronics Engineers Inc, 2013-06)
A discrete-time pulse width modulator (PWM) with zero baseband distortion for arbitrary band-limited modulating signals is developed in this paper. It is based on adjusting the duty-cycles of the PWMsuch that the samples ...
Superfície Seletiva de Frequência Reconfigurável (RFSS) baseada em Dipolo Cruzado
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Engenharia Eletrica, 2018)