Electronically tunable Schmitt trigger with independent TL/TH and output level control using commercially available ICs

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Aeu-International Journal of Electronics and Communications Pub Date : 2025-02-04 DOI:10.1016/j.aeue.2025.155710

Phamorn Silapan, Arisara Luewisutichat, Pawich Choykhuntod, Rapeepan Kaewon

引用次数: 0

Abstract

This paper presents a current-mode Schmitt trigger circuit capable of independently adjusting the upper and lower hysteresis thresholds electronically using commercial ICs (LT1228s and AD844s). The proposed Schmitt trigger simultaneously generates both clockwise (CW) and counterclockwise (CCW) functions without requiring modifications to the circuit structure. The circuit’s performance is validated through simulations and practical experiments with a ± 9 V power supply. Additionally, the triangular and square wave generator applications demonstrate the versatility and practicality of the proposed Schmitt trigger. Furthermore, the temperature does not affect the amplitude adjustment and the threshold currents, as confirmed by PSpice simulations.

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电子可调谐施密特触发器与独立的TL/TH和输出电平控制使用市售ic

本文提出了一种电流型施密特触发电路，该电路使用商用集成电路（lt1228和ad844），能够通过电子方式独立调节上、下滞后阈值。所提出的施密特触发器同时产生顺时针（CW）和逆时针（CCW）函数，而无需修改电路结构。在±9v电源下，通过仿真和实际实验验证了该电路的性能。此外，三角波和方波发生器的应用证明了所提出的施密特触发器的多功能性和实用性。此外，PSpice模拟证实了温度不影响幅度调节和阈值电流。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Aeu-International Journal of Electronics and Communications 工程技术-电信学

CiteScore

6.90

自引率

18.80%

发文量

292

审稿时长

4.9 months

期刊介绍： AEÜ is an international scientific journal which publishes both original works and invited tutorials. The journal''s scope covers all aspects of theory and design of circuits, systems and devices for electronics, signal processing, and communication, including: signal and system theory, digital signal processing network theory and circuit design information theory, communication theory and techniques, modulation, source and channel coding switching theory and techniques, communication protocols optical communications microwave theory and techniques, radar, sonar antennas, wave propagation AEÜ publishes full papers and letters with very short turn around time but a high standard review process. Review cycles are typically finished within twelve weeks by application of modern electronic communication facilities.