Results 241 to 250 of about 16,903 (301)

Research progress of online monitoring techniques for dissolved gas analysis in insulating oil. [PDF]

Front Chem
Mao H, Wang F, Wang J, Ma Z, Wang Y, Peng R, Geng Z, Lan X.   +7 more
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Flicker Noise Analysis on Chopper Amplifier

2021 19th IEEE International New Circuits and Systems Conference (NEWCAS), 2021
This paper aims to maximize the performance of the chopper amplifier, considering the design trade-off between noise and power consumption. To achieve the goal, we identify and model the various sources of flicker noise in the amplifier and switches using Verilog-AMS language. Then, we build a chopper amplifier circuit and investigate the influences of
Ting Zhou, Zhuo Gao, Jiajie Huang, Yewangqing Lu, Mingyi Chen, Yongfu Li   +5 more
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Analysis of a Chopper Amplifier [PDF]

IETE Journal of Research, 1970
Choppers are often required for obtaining low drift performance of low level d.c. amplifiers. The chopper amplifier basically consists of a modulator, an a.c. amplifier, a synchronous demodulator and a low pass filter. The drift-free performance results from the use of the ‘drift-less’ a.c. amplifier for amplification.The a.c.
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Chopper-stabilized operational transconductance amplifiers

IEEE Transactions on Instrumentation and Measurement, 1993
A technique for chopper-stabilizing commercial linearized operational transconductance amplifiers (OTAs) to remove output offset current errors is described. Design equations which illustrate performance tradeoffs as a function of component values are given. The results are verified experimentally using a common bipolar OTA. >
S.E. Nordquist, J.W. Haslett, F.N. Trofimenkoff   +2 more
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A chopper dc instrumental amplifier

Measurement Techniques, 1987
Because of their low zero drift chopper, dc amplifiers [I, pp. 22-23] are widely used in measuring equipment. The ratio of the maximum cut-off frequency of such an amplifier to its modulation frequency must be carefully chosen since an increase of its carrier frequency magnifies the effect of high-frequency pulse noise on the output voltage [2] in ...
A. E. Gudilin, S. V. Zhmak
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Noise Analysis and Simulation of Chopper Amplifier [PDF]

APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems, 2006
Conventional SPICE-like simulators are not adequate for the noise simulation of the chopper amplifier, which typically has no DC operating point. This paper discusses the noise properties of the chopper amplifier in both time domain and frequency domain and presents a method of simulating chopper amplifier noise behavior with the RF simulator?SpectreRF.
Tao Yin, Haigang Yang, Quan Yuan, Guoping Cui   +3 more
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A sensitive superconducting “chopper” amplifier

Physica, 1957
Synopsis A superconducting “chopper” amplifier without movable parts and possessing a direct current sensitivity better than 10−11 volt is described. Compactness of cryostat equipment and convenience of observation were factors controlling design.
A.R. De Vroomen, C. Van Baarle
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Low power chopper amplifier without LPF

2010 IEEE Asia Pacific Conference on Circuits and Systems, 2010
Chopping technique is an efficient approach to decrease the 1/f noise and low-frequency offset of CMOS amplifiers, but conventional chopper amplifier consumes large power because it required a wide-band amplifier exceed a chopping frequency and a post low pass filter (LPF) for eliminating modulation noise.
Xiao Yang, Yang Zhang, Weiwei Huang, Chaodong Ling   +3 more
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Chopper Amplifier [Circuit Intuitions]

IEEE Solid-State Circuits Magazine, 2016
Welcome to the ninth article in this column series. As the title suggests, each article provides insights and intuitions into circuit design and analysis. These articles are aimed at undergraduate students but may serve the interests of other readers as well.
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Low level transistorized chopper amplifier

IRE Transactions on Telemetry and Remote Control, 1957
Low-level transistorized chopper amplifiers have been constructed for a specific missile application. With minor modifications, these amplifiers can meet the requirements for general usage. The chopper is capable of processing 900 signals per second at a common mode rejection of 1000:1. The gain is smoothly adjustable ± 20 percent of full scale and the
Harold F. Harris, T. Eugene Smith
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