Solenoid drive method that conserves power
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United States of America Patent
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Issued Date -
Oct 14, 2010
app pub date -
Apr 10, 2009
filing date -
Apr 10, 2009
priority date (Note) -
Abandoned
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Abstract
A drive method for an impact-printhead solenoid is provided that improves power efficiency with an extremely simple circuit configuration and no sensors. Consisting only of a power-FET (Field-Effect Transistor) and PWM (pulse-width-modulation) signals from a printer-controller, this system, using a novel PWM frequency-optimization technique, reduces printhead power usage by as much as 13%.
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