Semiconductor Physics, Quantum Electronics & Optoelectronics. 2002. V. 5, N 4. P. 442-448.

PACS: 85.60.Bt, 42.79.Kr

Control circuits for LED positional indicator
A.V. Bushma, G.A. Sukach, L.A. Mischenko

Institute of Semiconductor Physics, NAS of Ukraine, 45 prospect Nauky, 03028 Kyiv, Ukraine
Phone: 38(044) 265 6188; fax: 38(044) 265 5430; e-mail: bushma@isp.kiev.ua

Abstract. We discuss the main concepts of circuit solutions for positional data representation and propose appropriate mathematical models. The basic features of positional information model formation in the displays with different (linear and array) types of element connection are analyzed. The mathematical models of digital circuits and their realizations for positional indication on different types of LED bar graph arrays are presented. An optimized analytical model and applicable logic structure for display with series connection of LED scale elements are proposed. The minimized circuit solutions for the reliable positional display units with different electric design of information area are offered.

Keywords: positional indication, reliability, modeling, display, LED, bar graph array, optoelectronics, logic element, digital structure, integrated circuit.
Paper received 20.11.02; accepted for publication 17.12.02.

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