Results 21 to 30 of about 663,104 (361)

Constant Temperature Anemometer with Self-Calibration Closed Loop Circuit

open access: yesApplied Sciences, 2020
In this paper, a Micro-Electro-Mechanical Systems (MEMS) calorimetric sensor with its measurement electronics is designed, fabricated, and tested. The idea is to apply a configurable voltage to the sensitive resistor and measure the current flowing ...
Jamel Nebhen   +2 more
doaj   +1 more source

Femtosecond pulses at 50-W average power from an Yb:YAG planar waveguide amplifier seeded by an Yb:KYW oscillator [PDF]

open access: yes, 2012
We report the demonstration of a high-power single-side-pumped Yb:YAG planar waveguide amplifier seeded by an Yb:KYW femtosecond laser. Five passes through the amplifier yielded 700-fs pulses with average powers of 50 W at 1030 nm. A numerical simulation
Baker, Howard John   +5 more
core   +1 more source

Double-Differential Amplifier for sEMG Measurement by Means of a Current-Mode Approach

open access: yesIEEE Access, 2022
This work proposes a Double Differential (DD) amplifier topology which exploits the advantages of the current-mode approach. DD amplifiers are useful as front-ends in standalone active electrodes for superficial electromyography (sEMG) wearable ...
Federico N. Guerrero   +3 more
doaj   +1 more source

Implementation of Power-Efficient Class AB Miller Amplifiers Using Resistive Local Common-Mode Feedback

open access: yesJournal of Low Power Electronics and Applications, 2021
An approach to implement single-ended power-efficient static class-AB Miller op-amps with symmetrical and significantly enhanced slew-rate and accurately controlled output quiescent current is introduced.
Anindita Paul   +6 more
doaj   +1 more source

Deterministic Noise Analysis for Single-Stage Amplifiers by Extension of Indefinite Admittance Matrix

open access: yesIEEE Open Journal of Circuits and Systems, 2020
This article presents two methods, the block approach indefinite admittance matrix (BA-IAM) and the estimation-by-inspection, to analyse the effects of deterministic noise on single-stage, single-ended amplifiers by extending the indefinite admittance ...
Vijender Kumar Sharma   +2 more
doaj   +1 more source

Efficiency of low power audio amplifiers and loudspeakers [PDF]

open access: yes, 2001
In this paper we look at the load presented to audio amplifiers by real transducers. We consider the power losses in Class-AB and Class-D amplifier topologies, and determine that in order to predict efficiency it is necessary to consider the amplifier ...
Burrow, SG, Grant, Duncan A
core   +2 more sources

Superior Resilience of Non-Gaussian Entanglement against Local Gaussian Noises

open access: yesEntropy, 2022
Entanglement distribution task encounters a problem of how the initial entangled state should be prepared in order to remain entangled the longest possible time when subjected to local noises. In the realm of continuous-variable states and local Gaussian
Sergey Filippov, Alena Termanova
doaj   +1 more source

Quantum limits on phase-preserving linear amplifiers [PDF]

open access: yes, 2012
The purpose of a phase-preserving linear amplifier is to make a small signal larger, regardless of its phase, so that it can be perceived by instruments incapable of resolving the original signal, while sacrificing as little as possible in signal-to ...
Caves, Carlton M.   +3 more
core   +2 more sources

Bismuth-Doped Fiber Lasers and Amplifiers Operating from O- to U-Band: Current State of the Art and Outlook

open access: yesPhotonics
The development of unique optical materials that provide amplification and lasing in new wavelength ranges is a major scientific problem, the solution of which is becoming the basis for the emergence of new optical technologies, which are primarily ...
Sergey Alyshev   +3 more
doaj   +1 more source

CMOS Inverter as Analog Circuit: An Overview

open access: yesJournal of Low Power Electronics and Applications, 2019
Since the CMOS technology scaling has focused on improving digital circuit, the design of conventional analog circuits has become more and more difficult.
Woorham Bae
doaj   +1 more source

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