Results 21 to 30 of about 216,951 (300)

Lock-in Amplifier Dairy Sensor for Detection of Ciprofloxacin

open access: yesIEEE Access, 2023
This work introduces a sensor for dairy antibiotic detection of ciprofloxacin in milk. We provide an important tool for antibiotic detection in milk and the main contributions of this work are as follows.
Jasen Devasagayam   +4 more
doaj   +1 more source

Design of Radiation-Hardened Rare-Earth Doped Amplifiers Through a Coupled Experiment/Simulation Approach [PDF]

open access: yes, 2013
We present an approach coupling a limited experimental number of tests with numerical simulations regarding the design of radiation-hardened (RH) rare earth (RE)-doped fiber amplifiers.
Boscaino, Roberto   +15 more
core   +4 more sources

Simulation and experiment of a diamond-type micro-displacement amplifier driven by piezoelectric actuator

open access: yesThe Journal of Engineering, 2019
The micro-displacement amplifier has been widely used to magnify the outputs of piezoelectric actuators for some large displacement required applications, and the amplification and frequency are the most important elements for designing the amplifying ...
Hai Zheng   +6 more
doaj   +1 more source

Fiber Amplifiers and Fiber Lasers Based on Stimulated Raman Scattering: A Review

open access: yesMicromachines, 2020
Nowadays, in fiber optic communications the growing demand in terms of transmission capacity has been fulfilling the entire spectral band of the erbium-doped fiber amplifiers (EDFAs).
Luigi Sirleto, Maria Antonietta Ferrara
doaj   +1 more source

A SIMPLE METHOD FOR IMPROVING OUT-OF-BAND HIGH-FREQUENCY STABILITY OF RADIO FREQUENCY AMPLIFIERS [PDF]

open access: yesRadio Physics and Radio Astronomy, 2023
Subject and Purpose. Methods for determining and ensuring the stability of radio frequency (RF) amplifiers have been progressing quite actively over the past decades. However, most of them are not convenient for practical use.
A. D. Khristenko
doaj   +1 more source

Modeling and Simulation of Monolithic Single-Supply Power Operational Amplifiers

open access: yesEnergies, 2021
In this paper a simple PSpice (Personal Simulation Program with Integrated Circuit Emphasis) macro-model was developed, and verified for monolithic power operational amplifiers operated with a single-supply voltage.
Ivailo Milanov Pandiev
doaj   +1 more source

Design of detection terminal for active millimetre-wave imaging

open access: yesThe Journal of Engineering, 2019
The diode is used as the detection unit to receive the millimetre-wave signal directly. A circuit is made with an operational amplifier OP27 to amplify the signal. The magnification of the OP27 circuit is stable at 100
Hanxue Mei   +3 more
doaj   +1 more source

Energy-Efficient Amplifiers Based on Quasi-Floating Gate Techniques

open access: yesApplied Sciences, 2021
Energy efficiency is a key requirement in the design of amplifiers for modern wireless applications. The use of quasi-floating gate (QFG) transistors is a very convenient approach to achieve such energy efficiency.
Antonio Lopez-Martin   +5 more
doaj   +1 more source

Control electronics for a neuro-electronic interface implemented in a gate array [PDF]

open access: yes, 1995
Presents a Gate Array for implementing electronic circuitry to control multi-electrode arrays, which consist of 128 microelectrodes.
Frieswijk, Theo A.   +3 more
core   +2 more sources

Biosignal Amplifiers Based on Low‐Noise Organic Transistors with Printed Electrodes

open access: yesAdvanced Electronic Materials, 2023
The monitoring of microvolt‐level biosignals such as electroencephalograms requires the application of low‐noise signal amplifier circuits, which, for single‐use cases, must be fabricated for disposability using low‐cost manufacturing techniques.
Tomoharu Kimura   +5 more
doaj   +1 more source

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