Results 81 to 90 of about 1,526,878 (350)

A Power Efficient Audio Amplifier Combining Switching and Linear Techniques [PDF]

, 1998
Integrated Class D audio amplifiers are very power efficient, but require an external filter which prevents further integration. Also due to this filter, large feedback factors are hard to realise, so that the load influences the distortion- and transfer
Tuijl, A.J.M. van, Zee, R.A.R. van der
core   +2 more sources

Photoswitching Conduction in Framework Materials

Advanced Functional Materials, EarlyView.
This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez, Stefan Hecht, Wolfgang Wenzel, Lars Heinke, Mariana Kozlowska   +4 more
wiley   +1 more source

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

Advanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul, Archith Rayabharam, Lisa Almonte, Eveline Rigo, Joshy Joseph, Ashutosh Kumar, Zhuxin Dong, Narayana Aluru, Gregory Timp   +8 more
wiley   +1 more source

Enhanced phase sensitivity in a feedback-assisted interferometer

New Journal of Physics
The topology of feedback optical parametric amplifier (FOPA) renders a number of significant advantages over the topology of traditional optical parametric amplifier (TOPA) such as a higher degree of quantum correlation, all-phase entanglement ...
Gao-Feng Jiao
doaj   +1 more source

A Low-Noise CMOS Transimpedance-Limiting Amplifier for Dynamic Range Extension

Micromachines
This paper presents a low-noise CMOS transimpedance-limiting amplifier (CTLA) for application in LiDAR sensor systems. The proposed CTLA employs a dual-feedback architecture that combines the passive and active feedback mechanisms simultaneously, thereby
Somi Park, Sunkyung Lee, Bobin Seo, Dukyoo Jung, Seonhan Choi, Sung-Min Park   +5 more
doaj   +1 more source

Bio-isolated dc operational amplifier [PDF]

, 1974
A bio-isolated dc operational amplifier is described for use in making bioelectrical measurements of a patient while providing isolation of the patient from electrical shocks. The circuit contains a first operational amplifier coupled to the patient with
Lee, R. D.
core   +2 more sources

Type II spiral ganglion afferent neurons drive medial olivocochlear reflex suppression of the cochlear amplifier. [PDF]

, 2015
The dynamic adjustment of hearing sensitivity and frequency selectivity is mediated by the medial olivocochlear efferent reflex, which suppresses the gain of the 'cochlear amplifier' in each ear.
Cederholm, Jennie ME, Froud, Kristina E, Housley, Gary D, Julien, Jean-Pierre, Klugmann, Matthias, Ryan, Allen F, Sandow, Shaun L, Wong, Ann Chi Yan   +7 more
core   +2 more sources

Bandwidth enhancement of an analog feedback amplifier by employing a negative group delay circuit

, 2010
We will demonstrate an alternative topology to greatly increase the operating bandwidth of an analog RF feedback power amplifler. A limited operating bandwidth due to the group delay mismatch of a feedback loop discouraged the use of an RF feedback ...
Heungjae Choi, Y. Jeong, C. Kim, James Stevenson Kenney   +3 more
semanticscholar   +1 more source

A Smart Bio‐Battery Facilitates Diabetic Bone Defect Repair Via Inducing Macrophage Reprogramming and Synergistically Modulating Bone Remodeling Coupling

Advanced Functional Materials, EarlyView.
This research presents a novel implantable bio‐battery, GF‐OsG, tailored for diabetic bone repair. GF‐OsG generates microcurrents in high‐glucose conditions to enhance vascularization, shift macrophages to the M2 phenotype, and regulate immune responses.
Nanning Lv, Haifu Sun, Wenxiang Tang, Yonggang Li, Zhonglai Qian, Lihui Hong, Chong Chen, Hongye Li, Jiaxiang Bai, Yusen Qiao, Mingming Liu   +10 more
wiley   +1 more source

A Low-Power CMOS Trans-Impedance Amplifier for 2.5 Gb/S Optical Communication Systems [PDF]

Journal of Intelligent Procedures in Electrical Technology, 2013
This Paper presents a new Trans-impedance amplifier for optical receiver circuits. The amplifier is based on parallel (R-C) feedback topology which is optimized for power consumption and uses shunt-peaking technique to enhance the frequency bandwidth of ...
Mojgan Mohseni, Mehdi Dolatshahi
doaj