NASA NTRS · 19950065165
Digital Pulse-Width-Modulation Circuit
Abstract
Digital pulse-width-modulation circuit provides programmable duration from 1 microsecond to full on, at repetition rate of 1 kHz. Designed for use in controlling CO2 laser, also used in applications in which precision and flexibility of digital control of pulse durations needed. Circuit incorporates low-power Schottky transistor/transistor-logic (TTL) devices in critical high-speed parts. Designed in TTL to make it compatible with Pro-Log 7914 (or equivalent) decoder input/output (I/O) utility printed-circuit card.
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Wenzler, Carl J., Eichenberg, Dennis J.. 1995-01-01. Digital Pulse-Width-Modulation Circuit. https://ntrs.nasa.gov/citations/19950065165
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