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Author/Affiliation: Worapong Tangsrirat
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Open AccessArticle
8 Pages, 1,970 KB Download PDF

Tunable Resistorless Phase Shifter Realization with a Single VDGA

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 136–143, 2023; DOI: 10.25046/aj080315
Abstract:

This paper describes the design of a phase shifter with electrically adjustable parameters employing only one voltage differencing gain amplifier (VDGA) and one floating capacitor. This circuit requires no external resistors, resulting in a resistorless design and a low component count. The proposed circuit implements a first-order all-pass filter response with electronic control of its…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Electronic Engineering (EEE))
Open AccessArticle
8 Pages, 5,492 KB Download PDF

Landmarking Technique for Improving YOLOv4 Fish Recognition in Various Background Conditions

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 3, Page # 100–107, 2023; DOI: 10.25046/aj080312
Abstract:

The detection and classification of fish is a prevalent and fascinating area of study. Numerous researchers develop skills in fish recognition in both aquatic and non-aquatic environments, which is beneficial for population control and the aquaculture industry, respectively. Rarely is research conducted to optimize the recognition of fish with diverse backgrounds. This paper proposes a…

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(This article belongs to the SP15 (Special Issue on Innovation in Computing, Engineering Science & Technology 2023) & Section Fisheries (FSH))
Open AccessArticle
7 Pages, 1,734 KB Download PDF

Active Simulation of Grounded Parallel-Type Immittance Functions Employing VDBAs and All Grounded Passive Components

Advances in Science, Technology and Engineering Systems Journal, Volume 8, Issue 1, Page # 131–137, 2023; DOI: 10.25046/aj080116
Abstract:

This communication proposes a grounded immittance function simulator that, depending on the proper choice of the passive components, can simulate parallel-type impedances of the R-L, R-C, and L-C forms. Only two grounded passive components and two voltage differencing buffered amplifiers (VDBAs) are used to implement the suggested circuit. All three simulated equivalent elements, namely Req,…

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(This article belongs to the SP14 (Special Issue on Computing, Engineering and Multidisciplinary Sciences 2022-23) & Section Electrical Engineering (ELE))
Open AccessArticle
9 Pages, 983 KB Download PDF

Practical Simulation of Grounded/Floating Lossy Inductors Based on Commercially Available Integrated Circuit LT1228

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 2, Page # 512–520, 2021; DOI: 10.25046/aj060258
Abstract:

The article suggests four circuit topologies for the practical simulation of grounded and floating lossy inductors. All the suggested circuits use commercially available integrated circuit LT1228 chips as active elements, and only two passive elements, namely one resistor and one capacitor. The first two of the proposed circuits employ only a single LT1228 active element…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Electronic Engineering (EEE))
Open AccessArticle
8 Pages, 998 KB Download PDF

Electronically Tunable Triple-Input Single-Output Voltage-Mode Biquadratic Filter Implemented with Single Integrated Circuit Package

Advances in Science, Technology and Engineering Systems Journal, Volume 6, Issue 1, Page # 1120–1127, 2021; DOI: 10.25046/aj0601125
Abstract:

This article proposes a compact and simple design of electronically adjustable voltage-mode biquadratic filter using fundamental active cell implemented on a single integrated circuit (IC) package as LT1228. The proposed circuit having triple inputs and single output (TISO) employs namely one resistor and two capacitors as the passive components. All the five possible biquadratic filtering…

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(This article belongs to the SP10 (Special Issue on Multidisciplinary Sciences and Engineering 2020-21) & Section Electronic Engineering (EEE))

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