Results 91 to 100 of about 1,526,878 (350)
Digital system provides superregulation of nanosecond amplifier-discriminator circuit [PDF]
, 1966 Feedback system employing a digital logic comparator to detect and correct amplifier drift provides stable gain characteristics for nanosecond amplifiers used in counting applications.
Forges, K. G.
core +1 more source
Unusual Swelling Behavior of Hydrogels Modified with Spiropyran as Appendage or Crosslinker
Advanced Functional Materials, EarlyView.Not so innocent after all—spiropyran crosslinkers in methylenebisacrylamide‐crosslinked poly(acrylamide‐co‐acrylic acid) hydrogels increase crosslinking density, but also, counterintuitively, increase swelling. Charge complexation, cooperative chemo‐mechanical effects, and aggregation may explain these observations.
Michael M. Lerch +7 more
wiley +1 more source
New Grounded-Capacitor Sinusoidal Oscillators Using the Current-Feedback-Amplifier Pole
Active and Passive Electronic Components, 1998 New current-feedback-operational amplifier (CFOA)-pole-based sinusoidal oscillator circuits are presented. Each circuit uses two CFOAs, two (or three) grounded capacitors and/or resistors. Experimental results are included.
Muhammad Taher Abuelma’atti +1 more
doaj +1 more source
Improvement of a highly sensitive and specific whole-cell biosensor by adding a positive feedback amplifier. [PDF]
Synth Syst Biotechnol, 2023 Hu S, Zhang G, Jia X.
europepmc +1 more source
Advanced Langmuir Probe (LP) [PDF]
The dynamic response of the MK-2 version of the Langmuir probe amplifier was studied. The settling time of the step response is increased by: (1) stray node-to-ground capacitance at series connections between high value feedback resistors; and (2) input ...
Block, B. P. +2 more
core +1 more source
Advanced Functional Materials, EarlyView.Controlled laser‐drilling of embedded HfO2 membranes creates three layer nanopores with Gaussian‐shaped cavities sculptured in the supporting layers. These embedded solid‐state nanopores slow DNA translocation by 12‐fold compared to SiNx pores, enabling high‐resolution, label‐free detection of short DNAs, RNAs, and proteins.
Jostine Joby +4 more
wiley +1 more source
Micromachines, 2019 This paper describes the design of a front-end receiver amplifier for capacitive micromachined ultrasonic transducer (CMUT). The proposed operational amplifier (op amp) consists of a full differential folded-cascode amplifier stage followed by a class AB
Yiheng Du +4 more
doaj +1 more source
Area-Efficient Integrated Current-Reuse Feedback Amplifier for Wake-Up Receivers in Wireless Sensor Network Applications. [PDF]
Sensors (Basel), 2022 Galante-Sempere D +3 more
europepmc +1 more source
Electroactive Liquid Crystal Elastomers as Soft Actuators
Advanced Functional Materials, EarlyView.Electroactive liquid crystal elastomers (eLCEs) can be actuated via electromechanical, electrochemical, or electrothermal effects. a) Electromechanical effects include Maxwell stress, electrostriction, and the electroclinic effect. b) Electrochemical effects arise from electrode redox reactions.
Yakui Deng, Min‐Hui Li
wiley +1 more source
A Chopper-Stabilized Amplifier With a Tunable Bandwidth for EEG Acquisition Applications
IEEE Access, 2019 A chopper-stabilized amplifier for bio-potential signal acquisition applications is presented. The proposed design includes an AC-coupled chopper-stabilized amplifier to reduce the 1/f noise and a tunable MOS-capacitor and a tunable pseudo-resistor to ...
Chung-Jae Lee, Jong-In Song
doaj +1 more source