Electronic clock
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United States of America Patent
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Apr 4, 2017
Grant Date -
Jun 11, 2015
app pub date -
Jul 23, 2013
filing date -
Jul 23, 2012
priority date (Note) -
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Abstract
Provided is an electronic clock which is capable of finely controlling a driving force of a normal driving pulse and suppresses variation in current consumption without an increase in circuit size. The electronic clock is configured so that while a chopped driving pulse is output and in an interval in which coil terminals have heretofore been short-circuited, a pulse is output (hereinafter referred to as adjustment pulse) for control from a terminal that is different from a terminal of a motor driver from which the normal driving pulse has been output. The output pattern of the adjustment pulse is changed with reference to a driving rank selecting circuit to increase or decrease a motor driving current and hence change the driving force.
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