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US 5,233,283 AGranted
Light curing device power control system
OwnerJohn Kennedyinventor
Life of this patent
Estimating the term…
Abstract
This electrical system is for use in a portable hand-held battery operated light curing device. The system includes a microprocessor which is activated by the battery to provide a series of square wave signals to the light curing lamp such that the light output of the light curing lamp is constant over a selected period of time. The system also provides a fast charging circuit for recharging the battery over a relatively short period of time.
Claims7
An electrical system located in a portable battery operated light generating device comprising,
- a light lamp means operative to generate a light energy output,
- a battery means coupled to said light lamp means and operative to provide electrical voltage for activating said light lamp means,
- microprocessor means coupled to said light lamp means and to said battery means, and in response to the energy condition in said battery means to generate a series of electrical pulse signals,
- transistor means connected to said microprocessor means and to said battery means, said transistor means receiving said pulse signals from said microprocessor means to operate in a series of varying ON and constant OFF intervals to conduct said pulse signals to said light lamp means for maintaining the light output from said light lamp means at a constant level, and
- mode selector means coupled to said microprocessor means and operative to control the length of time said light lamp means being activated by said electrical voltage.
2 more elements
Dependencies are inferred from the claim text.