NASA NTRS · 19630000016
Coincident switch closing reduces error in motor-driven timer
Abstract
To cut the lag-lead in motor-driven timing devices, the timing circuit has been extended to include a second switch. This is actuated in time with the first but driven directly at a speed x times faster than the first.
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Rich, S.. 1964-12-01. Coincident switch closing reduces error in motor-driven timer. https://ntrs.nasa.gov/citations/19630000016
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