Electronic digital dual sequential timing control apparatus for environmental systems
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United States of America Patent
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Mar 15, 1988
Grant Date -
N/A
app pub date -
Oct 27, 1986
filing date -
Oct 27, 1986
priority date (Note) -
Expired
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Abstract
An electronic digital timing control apparatus for controlling different durations for two sequential events in alternation, especially in environmental systems. The timing control apparatus is programmable and contains a single oscillator and a binary counter which counts a predetermined fixed number of output cycles from the oscillator. At one end of the first count, tuning components for the oscillator are switched in order to change the oscillator frequency and thereby the duration for the next count for the next corresponding event.
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