Results 11 to 20 of about 1,526,878 (350)
Half-octave shift in mammalian hearing is an epiphenomenon of the cochlear amplifier. [PDF]
PLoS ONE, 2012 The cochlear amplifier is a hypothesized positive feedback process responsible for our exquisite hearing sensitivity. Experimental evidence for or against the positive feedback hypothesis is still lacking. Here we apply linear control theory to determine
Sripriya Ramamoorthy, Alfred L Nuttall
doaj +1 more source
A design methodology for audio amplifiers with no global negative feedback: proposal and validation
Semina: Ciências Exatas e Tecnológicas, 2022 This paper proposes a structured methodology for the design of high-performance audio amplifiers without the use of global negative feedback. This type of amplifier is being suggested in order to minimize supposed deleterious effects on audio quality ...
Rafael Marchiori Visintin +3 more
doaj +1 more source
A High-Voltage and Low-Noise Power Amplifier for Driving Piezoelectric Stack Actuators
Sensors, 2020 In this paper, based on the principles of general operational amplifiers, a high-voltage operational amplifier is developed. Considering the influences of piezoelectric stack actuators on the circuit, a novel structure using the high-voltage operational ...
Lisong Xu +3 more
doaj +1 more source
0.5 V CMOS Inverter-Based Transconductance Amplifier with Quiescent Current Control
Journal of Low Power Electronics and Applications, 2021 A two-stage CMOS transconductance amplifier based on the inverter topology, suitable for very low supply voltages and exhibiting rail-to-rail output capability is presented.
Andrea Ballo +2 more
doaj +1 more source
Phase conjugate fluorozirconate fibre laser operating at 800nm [PDF]
, 1992 We report phase-conjugate feedback into a fluorozirconate optical fiber amplifier at infrared wavelengths. By using a semiconductor laser diode at 807 nm, a grating is established in photorefractive BaTiO3 that, in the ring configuration, provides ...
Carter +12 more
core +1 more source
ASE Suppression in Backward-Pumped Er/Yb Double-Cladding Fiber Amplifier via Cladding Feedback
IEEE Photonics Journal, 2016 We demonstrate a backward-pumped 1550 nm narrow-linewidth Erbium-Ytterbium double-cladding fiber amplifier with amplified spontaneous emission (ASE) suppression.
Xiaolei Bai +7 more
doaj +1 more source
AC amplifiers with ultra‐low corner frequency by using bootstrapping
Electronics Letters, 2021 A novel architecture for an AC (i.e. high‐pass) amplifier is proposed allowing a drastic reduction of the cutoff frequency to the sub‐Hertz range. It builds upon the classic AC configuration with a high gain amplifier and a parallel RC circuit in the ...
Maite Martincorena‐Arraiza +3 more
doaj +1 more source
Sensors, 2019 The linear power amplifier with high-output power in the broadband frequency is the critical component required by exciting the electromagnetic acoustic transducer (EMAT) to generate ultrasonic guided wave (UGW).
Jinjie Zhou, Yang Zheng
doaj +1 more source
Quantum noise and its evasion in feedback oscillators
Nature Communications, 2023 Feedback oscillators, consisting of an amplifier whose output is partially fed back to its input, provide stable references for standardization and synchronization.
Hudson A. Loughlin, Vivishek Sudhir
doaj +1 more source
IEEE Access, 2022 The following paper is devoted to an amplifier with gain control (Variable Gain Amplifier). The role of amplification and gain control is addressed separately from the very beginning, to achieve the greatest possible independence of the required ...
Karel Witas, Jan Nedoma
doaj +1 more source