Results 41 to 50 of about 97,874 (341)
, 1977 A window comparator is described, comprising two operational amplifiers, one with two feedback circuits, each feedback circuit having a diode connected to the amplifier output and poled for forward current conduction of opposite polarity, to provide an ...
Black, J. M.
core +1 more source
Wide-band current preamplifier for conductance measurements with large input capacitance
, 2012 A wide-band current preamplifier based on a composite operational amplifier is proposed. It has been shown that the bandwidth of the preamplifier can be significantly increased by enhancing the effective open-loop gain of the composite preamplifier.
Andrey V. Kretinin +3 more
core +1 more source
A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins
FEBS Letters, EarlyView.We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue +6 more
wiley +1 more source
Low level signal limiter [PDF]
, 1968 A limiting circuit is described which prevents a signal being supplied to a signal amplifier from exceeding a predetermined value. The circuit is designed to permit a signal voltage to be fed directly to a signal amplifier without passing through the ...
Hansen, I. G., Peterson, V. S.
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By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +1 more source
FEBS Letters, EarlyView.Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang +5 more
wiley +1 more source
Operational Current Amplifier-Based Quadrature Oscillators Family
IEEE AccessThis paper investigates the application of the operational current amplifier (OCA) in the design of quadrature sinusoidal oscillators. There are numerous quadrature sinusoidal oscillators based on the three fundamental amplifiers namely the operational ...
Hussain A. Alzaher, Ibrahim M. Alkhalifa
doaj +1 more source
Extraction of circuit parameters using multi-objective genetic algorithm for design of non-linearly compensated operational amplifiers [PDF]
مجله مدل سازی در مهندسی, 2019 In this paper, a CMOS operational amplifier (op-amp) for applications requiring a bandwidth several hundreds of MHz will be designed and optimized. The op-amp is two-stage and compensated by current buffer and a Miller capacitor.
Esmaeel Ranjbar +2 more
doaj +1 more source
Precision full-wave rectifier [PDF]
, 1970 Simplified circuit uses one operational amplifier and two precision resistors.
Deboo, G. J., Hedlund, R. C.
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Operational transconductance amplifier-based nonlinear function syntheses [PDF]
, 1989 It is shown that the operational transconductance amplifier, as the active element in basic building blocks, can be efficiently used for programmable nonlinear continuous-time function synthesis.
Linares Barranco, Bernabé +3 more
core +1 more source