Design of a rail-to-rail input-output analog buffer with high PSRR by Liu, Ziming

“…The design is implemented with the architecture of a folded cascode operational amplifier with complementary input pairs and Class AB output stage controlled by translinear loops. …”
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Design an electronically-amplified stethoscope (for listening to your heart and lung sounds) by Tan, Miko Hui Min

“…The design will be divided into three stages, operational amplifier, volume unit, and power meter. Ultimately, students are capable of analyzing and hearing their heart pulses through this experimental project.…”
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ANTARMUKA AKUISISI DATA TERISOLASI by , CINDERA PERMATANINGSIH, , Muhammad Arrofiq, S.T.,M.T.,Ph.D.

“…From PLN 220 volt voltage scaled voltage of 11:511 times for sensors for voltage and current sensors use 15 watt resistor of 0.47 ohm so that the voltage at the load is not too reduced consumption. entry directly to the voltage sensor and to ISO124P ic current sensor after entering ISO124P enter it using LM741 operational amplifier with gain a hundred times so easy to read measuring instruments. …”

Implementation of electromyography detecting system for exoskeleton robot applications by Saeed, Maged S., Ishak, Asnor Juraiza, Ahmad, Siti Anom, Hassan, Mohd Khair

“…The filtered signal was amplified again in the second amplification stage using operational amplifier (OP2604AP) to get the signal in the volt range then displayed and stored on the digital oscilloscope. …”
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Sizing CMOS Amplifiers by PSO and MOL to Improve DC Operating Point Conditions by Esteban Tlelo-Cuautle, Martín Alejandro Valencia-Ponce, Luis Gerardo de la Fraga

“…The sizes of the metal-oxide-semiconductor (MOS) transistors in an operational amplifier must guarantee strong direct current operating point (DCOP) conditions. …”
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Dynamic Analysis of a Four-Wing Chaotic System and Application in Image Encryption Based on Compressive Sensing by Li Zhang, Xin-Lei An

“…Then, the circuit model of the constructed four-wing chaotic system is built with a basic operational amplifier circuit, and the accuracy of the circuit implementation is verified. …”
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Dragonfly visual evolutionary neural network: A novel bionic optimizer with related LSGO and engineering design optimization by Heng Wang, Zhuhong Zhang

“…The comparative experiments show that the neural network is a competitive optimizer capable of effectively solving LSGO benchmark suites with 2000 dimensions per example and the design of an operational amplifier.…”
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Efficient and Accurate Optical Signal Processing and Digitization System for High Speed Data Acquisition and Analysis by Sharma Ishaan, Sharma Kadambari

“…The optical signal processing phase employed the LF356N operational amplifier, offering attributes like low bias current, high bandwidth, and rapid settling time. …”
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A Temperature-Compensation Technique for Improving Resolver Accuracy by Wandee Petchmaneelumka, Vanchai Riewruja, Kanoknuch Songsuwankit, Apinai Rerkratn

“…For the proposed technique, the primary winding of the resolver is driven by a class-AB output stage of an operational amplifier (opamp), where the primary winding current forms part of the supply current of the opamp. …”
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Zero Drift Infrared Radiation Thermometer Using Chopper Stabilised Pre-Amplifier by Andrew D. Heeley, Matthew J. Hobbs, Jon R. Willmott

“…A zero-drift, mid–wave infrared (MWIR) thermometer constructed using a chopper stabilised operational amplifier (op-amp) was compared against an identical thermometer that utilised a precision op-amp. …”
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Noise Level Notifier by P.M Dinesh, B Yogesh Bala, S Manoj Kumar, R.S Sabeenian, M.E Paramasivam, A Manjunathan

“…The sound sensor signals are amplified using the operational amplifier function of the integrated circuit LM 567. …”
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Comparative Analysis of SS, SP, PP and PS Topologies for Magnetic Coupled Wireless Power Transfer System Composed of the Negative Resistor by Xujian Shu, Guoxin Wu, Yanwei Jiang

“…Finally, the experimental prototypes are set up by using the power electronic inverter and operational amplifier, and the voltage gain ratios of the four basic NR-based WPT topologies under the variations of transfer distance and load are observed. …”
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A 3.95 ppm/°C 7.5 μW Second-Order Curvature Compensated Bandgap Reference in 0.11 μm CMOS by Yuefeng He, Guoshun Yuan, Lei Lei, Hongjiang Yu, Dewei Kong

“…It features a new self-biased fully symmetric differential operational amplifier circuit with the help of split transistors for achieving low power consumption and high accuracy; by adding a new sub-threshold compensated circuit. …”
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Design a current mode voltage reference by Peng, Haoxiang

“…Also, the student will be requited to design a suitable operational amplifier with a high output and gain which can be able to act like an ideal amplifier and make the voltage reference circuit works better. …”
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Wireless EEG monitoring system by Lu, Yuncheng

“…The analog part is made up of high CMRR amplifiers, precision operational amplifier and low-pass filter; the digital part mainly assembles the Analog-to-Digital Converter (ADC) and Bluetooth transmission module. …”
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Design of capacitance to voltage converter for capacitive sensor transducer by Alam, A. H. M. Zahirul, Che Mustapha, Nurul Arfah, Khan, Sheroz, Islam, Md. Rafiqul

“…Approach: The design was implemented using the Operational amplifier (Op amp) and capacitive network. The circuit was simulated using the PSPICE model parameters based on standard 0.13 μm CMOS process. …”
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Testing and calibration of an ultraviolet-a radiation sensor based on GaN photodiode by Theyirakumar .J, Gopir .G, Yatim .B, Sanusi .H, Megat Mahmud .P.S, Hoe .P.C

“…In this sensor system, a GaN photodiode in reverse-biased mode converts the radiation intensity into current, which was then converted and amplified into an output voltage by a transimpedance amplifier (TIA), or current-voltage converter, consisting of an operational amplifier and a feedback resistor. For a narrowband UV source, the radiation intensity could be calculated from the values of the output voltage, feedback resistor, photodiode responsivity and photodiode effective area. …”
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Electrical appliances protection using auto cut under voltage and over voltage tripping mechanism by Abu Bakar, Nur Hijrah, Mohd Asry, Anis Maisarah, Mustafa -, Farahiyah

“…In this study, an auto-cut circuit has been designed using relay, transistor, operational amplifier and other discrete component and a lamp was used as a load to confirm the circuit successfully operated. …”
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Development of op-amp based piezoelectric rectifier for low power energy harvesting applications by Sepeeh, Muhamad Syazmie, Mustafa, Farahiyah, Mohd. Asry, Anis Maisarah, Sy, Yi Sim, Zainal Abidin, Mastura Shafinaz

“…In this study, the development of operational amplifier (op-amp) based rectifier for piezoelectric energy harvesting applications was studied. …”
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Single JFET Front-End Amplifier for Low Frequency Noise Measurements with Cross Correlation-Based Gain Calibration by Graziella Scandurra, Gino Giusi, Carmine Ciofi

“…To address this issue, we propose to add two simple operational amplifier-based auxiliary amplifiers with known gain as part of the measurement chain and employ cross correlation for the calibration of the gain of the main amplifier. …”
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