Results 1 to 10 of about 2,047 (160)

Design of Preamplifier for Ultrasound Transducers [PDF]

open access: yesSensors
In diagnostic ultrasound imaging applications, preamplifiers are used as first-stage analog front-end amplifiers for ultrasound transducers because they can amplify weak acoustic signals generated directly by ultrasound transducers.
Hojong Choi
doaj   +4 more sources

A novel whole-head RF coil design tailored for concurrent multichannel brain stimulation and imaging at 3T [PDF]

open access: yesBrain Stimulation, 2023
Purpose: Multichannel Transcranial Magnetic Stimulation (mTMS) [1] is a novel non-invasive brain stimulation technique allowing multiple sites to be stimulated simultaneously or sequentially under electronic control without movement of the coils.
Lucia I. Navarro de Lara   +9 more
doaj   +2 more sources

A dataset of acoustics emissions recordings of woodboring insects in wood and cultural objects, context images and remarksZenodo [PDF]

open access: yesData in Brief
This dataset presents acoustic emission (AE) recordings collected from woodboring insect-infested and non-infested wood samples and cultural heritage objects. Data acquisition was conducted across four institutions: Haute École Arc (HE-Arc), Switzerland;
Tom Marti   +4 more
doaj   +2 more sources

Optimized Design of a Self-Biased Amplifier for Seizure Detection Supplied by Piezoelectric Nanogenerator: Metaheuristic Algorithms versus ANN-Assisted Goal Attainment Method

open access: yesMicromachines, 2022
This work is dedicated to parameter optimization for a self-biased amplifier to be used in preamplifiers for the diagnosis of seizures in neuro-diseases such as epilepsy.
Swagata Devi   +4 more
doaj   +1 more source

Regenerative comparator with floating capacitor for energy‐harvesting applications

open access: yesIET Circuits, Devices and Systems, 2021
An energy‐efficient regenerative comparator design is unveiled. A floating capacitor is utilized to protect the complete discharge of the preamplifier output nodes by NMOS input transistors.
Hadi Pahlavanzadeh, Mohammad Azim Karami
doaj   +1 more source

Implementation of three stage comparator using a modified latch with sustainable resources [PDF]

open access: yesE3S Web of Conferences, 2023
In this paper, the current study uses a lector technique to modify the latch. The Lector approach is one of the top low-power methods for IC technologies. The locking mechanism is the third stage in our proposed design for a three-stage comparator.
Navya Galla   +4 more
doaj   +1 more source

Effective Current Pre-Amplifiers for Visible Light Communication (VLC) Receivers

open access: yesTechnologies, 2022
Visible light communication (VLC) is an upcoming wireless communication technology. In a VLC system, signal integrity under low illumination intensity and high transmission frequencies are of great importance.
Simon-Ilias Poulis   +7 more
doaj   +1 more source

A Front-End Amplifier With Current Compensation Feedback Input Impedance Booster for Neural Signal Applications

open access: yesIEEE Access, 2020
In integrated circuit form, the front-end amplifier (FEA) determines the fidelity of the biosignal detection, signal-to-noise ratio, power consumption and detector size for the future multi-channel neural signal recording systems and applications ...
Zhijun Zhou
doaj   +1 more source

Dataset from healthy and defective spot welds in refill friction stir spot welding using acoustic emission

open access: yesData in Brief, 2022
The dataset presented in this paper deals with real-time measurements carried out during the welding of 78 spot welds including heathy and defective states. These measurements are composed of acoustic emission signals and welding parameters.
Fethi Dahmene   +7 more
doaj   +1 more source

A monolithic gallium nitride‐based two‐phase synchronous buck converter with high operating frequency

open access: yesElectronics Letters, 2023
The need for a high‐frequency and high‐efficiency gallium nitride (GaN)‐based buck converter that can be controlled directly by a low swing pulse width‐modulated (PWM) signal, without the need for additional buffers or preamplifiers, poses a significant ...
Longkun Lai   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy