Results 21 to 30 of about 35,465 (120)

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

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

A bulk-driven, buffer-biased, gain-boosted amplifier for biomedical signal enhancement

open access: yesCogent Engineering, 2019
The growing consciousness in health, biomedical research area is becoming most sought-after to develop or design medical devices by bringing biomedical researchers and clinicians to solve many health issues.
Sarin Vijay Mythry, D. Jackuline Moni
doaj   +1 more source

Transpermeance Amplifier Applied to Magnetic Bearings

open access: yesActuators, 2017
The most conventional approach of controlling magnetic forces in active magnetic bearings (AMBs) is through current feedback amplifiers: transconductance.
Jossana Ferreira   +2 more
doaj   +1 more source

Insulting Rhetorical Questions – Mitigators or Amplifiers?

open access: yesRespectus Philologicus, 2022
The paper examines whether rhetorical questions (RQs) with insulting content or implications soften or intensify the insulting content that they express, as compared to corresponding direct statements with similar insulting content.
Džemal Špago
doaj   +1 more source

Increasing the sensitivity of an SDR receiver using an external low-noise amplifier and software signal processing over a wide frequency range

open access: yesФизика волновых процессов и радиотехнические системы
Background. Currently, Software-Defined Radio receivers are widely used for weak-signal reception, radio monitoring, and scientific research; however, their sensitivity is often limited by a high intrinsic noise figure. Methods.
Mikhail P. Kalaev   +2 more
doaj   +1 more source

Triple buck converter – an efficient low-distortion switch-mode power amplifier topology

open access: yesThe Journal of Engineering, 2019
A switch-mode power amplifier topology that can achieve both a high conversion efficiency and low-output signal distortion is introduced. Such systems are desirable for ultra-high precision amplifiers that, for example, drive actuators in nanometre ...
Mario Mauerer   +2 more
doaj   +1 more source

Variation in the Amplifier System Among Chinese L2 English Speakers in Australia

open access: yesLanguages
This study investigates the English adjective amplifier system of eleven Mandarin Chinese L2 speakers of English residing in Australia compared to a sample of ten native Australian English (AusE) speakers from the AusTalk corpus. Employing a variationist
Minghao Miao, Chloé Diskin-Holdaway
doaj   +1 more source

The Importance of Introducing the OCTC Method to Undergraduate Students as a Tool for Circuit Analysis and Amplifier Design

open access: yesTechnologies, 2020
The open-circuit-time-constant (OCTC) method is an approximate analytical computationally simple approach applicable to baseband amplifiers and cascades of them.
Nikolaos Voudoukis   +6 more
doaj   +1 more source

Double dual slope square rooter

open access: yesThe Journal of Engineering, 2014
A circuit which accepts input dc voltage V(I) and produce an output voltage V(O) = √V(I)V(T) by using double dual slope principle is described in this Letter. V(T) is a constant voltage which is fixed by two resistors and a power supply voltage. By using
Krishnagiri Chinnathambi Selvam
doaj   +1 more source

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