Results 41 to 50 of about 393,474 (272)

Common-Mode Noise Reduction in Noncontact Biopotential Acquisition Circuit Based on Imbalance Cancellation of Electrode-Body Impedance

open access: yesSensors, 2020
Biopotential sensing technology with electrodes has a great future in medical treatment and human—machine interface, whereas comfort and longevity are two significant problems during usage.
Minghui Chen   +4 more
doaj   +1 more source

Low cost instrumentation amplifier [PDF]

open access: yes, 1974
Amplifier can be used for many applications requiring high input impedance and common mode rejection, low drift, and gain accuracy on order of one percent. Performance of inexpensive amplifier approaches that of some commercial instrumentation amplifiers
Sturman, J. C.
core   +1 more source

Common-mode rejection in Martin-Puplett spectrometers for astronomical observations at mm-wavelengths

open access: yes, 2015
The Martin-Puplett interferometer (MPI) is a differential Fourier transform spectrometer (FTS), measuring the difference between spectral brightness at two input ports.
D'Alessandro, Giuseppe   +3 more
core   +1 more source

Analysis and design of a differential sampled-line six-port reflectometer [PDF]

open access: yes, 2012
The analysis and design of a differential six-port reflectometer (SPR) based on a sampled-line structure is presented in this paper. The practical differential SPR is realized in Coplanar Strip (CPS) transmission line form, using two baluns for ...
Chongcheawchamnan, M   +3 more
core   +2 more sources

A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg   +5 more
wiley   +1 more source

Assessment of impact of borehole heat exchanger design on heat extraction/rejection efficiency

open access: yesMATEC Web of Conferences, 2016
The article considers the impact of design of borehole heat exchanger (BHE) as one of the main elements of a geothermal heat pump system on its efficiency in the ground heat extraction/rejection.
Gornov V.F.   +3 more
doaj   +1 more source

Amplifier for measuring low-level signals in the presence of high common mode voltage [PDF]

open access: yes, 1985
A high common mode rejection differential amplifier wherein two serially arranged Darlington amplifier stages are employed and any common mode voltage is divided between them by a resistance network.
Lukens, F. E.
core   +1 more source

Differential Bloch Oscillating Transistor Pair

open access: yes, 2013
We examine a Bloch Oscillating Transistor pair as a differential stage for cryogenic low-noise measurements. Using two oppositely biased, nearly symmetric Bloch Oscillating Transistors, we measured the sum and difference signals in the current gain and ...
Hakonen, Pertti J.   +3 more
core   +1 more source

Understanding and Optimizing Li Substitution in P2‐Type Sodium Layered Oxides for Sodium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous 
Mingfeng Xu   +5 more
wiley   +1 more source

Common mode noise rejection in measurement channels [PDF]

open access: yes, 2013
У вимірювальних каналах виникають два види завад: (і) нормального виду (викликані електромагнітним полем); (іі) загального виду (викликані різницею потенціалів сенсора та вимірювального каналу). Тому необхідне подавлення завади загального виду.
Kochan, O.   +5 more
core  

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