Results 11 to 20 of about 5,022 (254)

Digitally Programmable Active-R Function Generator

open access: yesActive and Passive Electronic Components, 1994
A new digitally programmable active-R function generator circuit is presented. The circuit uses four operational amplifiers, two operational transconductance amplifiers, and resistors. The circuit can provide sinusoidal, square, and triangular waves with
Muhammad Taher Abuelma'Atti
doaj   +1 more source

Mathematical Circuit Root Simplification Using an Ensemble Heuristic–Metaheuristic Algorithm

open access: yesMathematics, 2023
Symbolic pole/zero analysis is a crucial step in designing an analog operational amplifier. Generally, a simplified symbolic analysis of analog circuits suffers from NP-hardness, i.e., an exponential growth of the number of symbolic terms of the transfer
Navid Behmanesh-Fard   +3 more
doaj   +1 more source

Active-Only Sinusoidal Oscillator with Electronically-Tunable Fully-Uncoupled Frequency and Condition of Oscillation

open access: yesActive and Passive Electronic Components, 2001
A new active-only sinusoidal oscillator is presented. The oscillator circuit uses two internally compensated operational amplifiers, two plus-type second-generation current conveyors and three operational transconductance amplifiers. The proposed circuit
Muhammad Taher Abuelmaatti
doaj   +1 more source

Noise Analysis in Pre-Amplifier Circuits Associated to Highly Sensitive Optically-Pumped Magnetometers for Geomagnetic Applications

open access: yesApplied Sciences, 2020
This paper analyzes the noise sources in photoelectric detection circuits with several low-noise operational amplifiers cores. The fabricated circuits are low-noise pre-amplifiers that are used for optically pumped magnetometers. In the proposed circuits,
Leisong Liu   +4 more
doaj   +1 more source

New Electronically-Tunable Oscillator Circuit Using Only Two OTAs

open access: yesActive and Passive Electronic Components, 1998
New oscillator circuit using two operational transconductance amplifiers and grounded capacitors is presented. The oscillator circuit enjoys independent control of the frequency and the condition of oscillation.
Muhammad Taher Abuelma'atti   +1 more
doaj   +1 more source

The establishment of operational amplifiers output steady state voltage [PDF]

open access: yesTehnika, 2015
Operational amplifiers (OA) present indispensable elements in analog signal processing. In practice it is often important to determine how much time an OP's output voltage takes to get close to a steady state within predetermined boundaries. The existing
Radetić Radojle M.   +2 more
doaj   +1 more source

Multi-Function Active-Only High-Order Current-Driven Filter

open access: yesActive and Passive Electronic Components, 2000
A new multi-function high-order current-driven filter is proposed. The filter uses only operational amplifiers, and operational transconductance amplifiers (OTAs).
Muhammad Taher Abuelma'atti   +1 more
doaj   +1 more source

An LMS Programming Scheme and Floating-Gate Technology Enabled Trimmer-Less and Low Voltage Flame Detection Sensor

open access: yesSensors, 2017
In this paper, a Least Mean Square (LMS) programming scheme is used to set the offset voltage of two operational amplifiers that were built using floating-gate transistors, enabling a 0.95 VRMS trimmer-less flame detection sensor.
Juan Carlos Iglesias-Rojas   +2 more
doaj   +1 more source

COMPARATIVE STUDY OF THE TEMPERATURE STABILITY OF THE TOOL AMPLIFIER [PDF]

open access: yesBiomedicinskaâ Inženeriâ i Èlektronika, 2017
The temperature stability of the instrumental and two-stage amplifiers based on the operational amplifier LM358 (STMicroelectronics) amplifiers is experimentally studied.
Bogush A.R. , Tihosova A.O.
doaj   +1 more source

Modeling and Simulation of Monolithic Single-Supply Power Operational Amplifiers

open access: yesEnergies, 2021
In this paper a simple PSpice (Personal Simulation Program with Integrated Circuit Emphasis) macro-model was developed, and verified for monolithic power operational amplifiers operated with a single-supply voltage.
Ivailo Milanov Pandiev
doaj   +1 more source

Home - About - Disclaimer - Privacy