Battery compensation system using PWM
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United States of America Patent
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Aug 16, 2016
Grant Date -
Feb 6, 2014
app pub date -
Oct 6, 2013
filing date -
Feb 16, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Compensation system adapted for use with a battery-powered, PWM-driven portable electronic device to enable consistent power to the device load despite battery voltage drop resulting from battery depletion, comprising: a voltage divider circuit for proportionally adjusting the voltage to a measurable range; an analog-to-digital converter for receiving the output from the voltage divider and converting it into a digital voltage value; and a microprocessing unit for running software code steps for receiving digital voltage input and user-determined power setting input for determining a compensating duty cycle for application by the software to the PWM to drive the load consistently at the user-determined power setting despite decrease in battery voltage resulting from battery depletion.
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International Classification(s)
- H02M:APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEE....
- A61F:FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- B63C:LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS;....
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- A42B:HATS; HEAD COVERINGS
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