Results 21 to 30 of about 1,437 (273)

Low-Noise Multimodal Reconfigurable Sensor Readout Circuit for Voltage/Current/Resistive/Capacitive Microsensors

Applied Sciences, 2020
This paper presents a low-noise reconfigurable sensor readout circuit with a multimodal sensing chain for voltage/current/resistive/capacitive microsensors such that it can interface with a voltage, current, resistive, or capacitive microsensor, and can ...
Donggeun You, Hyungseup Kim, Jaesung Kim, Kwonsang Han, Hyunwoo Heo, Yongsu Kwon, Gyungtae Kim, Woo Suk Sul, Jong Won Lee, Boung Ju Lee, Hyoungho Ko   +10 more
doaj   +1 more source

A Dynamic Instrumentation Amplifier for Low-Power and Low-Noise Biopotential Acquisition

Sensors, 2016
A low-power and low-noise dynamic instrumentation amplifier (IA) for biopotential acquisition is presented. A dynamic IA that can reduce power consumption with a timely piecewise power-gating method, and noise level with an alternating input and chopper ...
Jongpal Kim, Hyoungho Ko
doaj   +1 more source

Low-Noise, Low-Power Readout IC for Two-Electrode ECG Recording Using Common-Mode Charge Pump for Robust 20-V_PP Common-Mode Interference

Applied Sciences, 2022
A low-noise and -power readout integrated circuit (IC) for two-electrode electrocardiogram (ECG) recording is developed in this study using a common-mode charge pump (CMCP) for a robust 20-VPP common-mode interference (CMI).
Kyeongsik Nam, Gyuri Choi, Mookyoung Yoo, Sanggyun Kang, Byeongkwan Jin, Hyeoktae Son, Kyounghwan Kim, Hyoungho Ko   +7 more
doaj   +1 more source

Enhanced Dynamic Behaviour of Grid Connected Wind Farms in Load Participation and Frequency Regulation

Frontiers in Energy Research, 2021
The control of grid frequency in power systems due to the penetration of wind turbines is vital to maintaining the stability of power grids, based on recent grid requirements.
Kenneth E. Okedu, Kenneth E. Okedu, Kenneth E. Okedu, Hind F. A. Barghash   +3 more
doaj   +1 more source

IR detection module with integrated real-time FIR filter implemented in FPGA [PDF]

International Journal of Electronics and Telecommunications
Infrared detectors are usually characterized by 1/f noise when operating with biasing. This type of noise significantly reduces detection capabilities for low-level and slow signals.
Krzysztof Achtenberg, Janusz Mikołajczyk, Zbigniew Bielecki   +2 more
doaj   +3 more sources

Fully Integrated Biopotential Acquisition Analog Front-End IC

Sensors, 2015
A biopotential acquisition analog front-end (AFE) integrated circuit (IC) is presented. The biopotential AFE includes a capacitively coupled chopper instrumentation amplifier (CCIA) to achieve low input referred noise (IRN) and to block unwanted DC ...
Haryong Song, Yunjong Park, Hyungseup Kim, Hyoungho Ko   +3 more
doaj   +1 more source

Stability study and dynamical analysis of the multicellular chopper [PDF]

International Journal of Simulation and Process Modelling, 2018
The dynamical properties of a two-cells chopper connected to a particular nonlinear load are described in this paper. Some interesting and complex attractors are obtained. We analyse the system by means of Lyapunov exponents, fractal dimension, Poincaré mapping, first return, bifurcation diagram and phase portraits, respectively. Our model is described
Djondiné, Philippe, Barbot, Jean-Pierre, Ghanes, Malek   +2 more
openaire   +3 more sources

Multi-Channel Neural Recording Implants: A Review

Sensors, 2020
The recently growing progress in neuroscience research and relevant achievements, as well as advancements in the fabrication process, have increased the demand for neural interfacing systems. Brain−machine interfaces (BMIs) have been revealed to be
Fereidoon Hashemi Noshahr, Morteza Nabavi, Mohamad Sawan   +2 more
doaj   +1 more source

A 55 V, Six-Channel Chopper and Auto-Zeroing Amplifier with 6.2 nV/$\sqrt{\mathbf{Hz}}$ Noise and −128 dB Total Harmonic Distortion

Eng
In this paper, a high-voltage chopper and ping-pong auto-zeroing operational amplifier was designed for industrial and automotive applications. Based on chopper stabilization, the proposed circuit introduces a novel chopper switch control signal that ...
Guolong Li, Guoqing Weng, Zhifeng Chen, Chenying Zhang, Shifan Wu, Chengying Chen   +5 more
doaj   +1 more source

Design of Chopper-Stabilized Amplifiers With Reduced Offset for Sensor Applications [PDF]

IEEE Sensors Journal, 2008
Offset error mechanisms in a single-ended chopper-stabilized amplifier are investigated. The error models and their prediction equations are given. This work also presents a new analytical approach for estimating the switch error in a four-transistor chopping network.
Cui, J., Chan, Pak Kwong
openaire   +3 more sources