Automatic power control module for battery powered devices
OwnerDeborah K. Avisinventor
Life of this patent
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Abstract
A power control module which can be used to automatically open a power circuit for electrically operated devices, particularly battery operated devices, during predetermined periods of non-use. A timer is reset by a motion detector indicating continuing use. The timer controls a transistor switch which closes and opens the power circuit as required. The timing interval can be user-selected e.g., by programming a microprocessor controller. The transition time between conductive and non-conductive states of the transistor can also be controlled to prolong the life of incandescent bulbs or other sensitive load devices.
Claims12
A self-contained power control module for a battery operated device comprising:
- a support base for the module constructed and configured to be removably installed in a battery compartment, and conformable to standard battery configurations;
- first and second normally open electrical terminals positioned and configured to couple the module between a battery and a load device when the module is installed in the battery compartment;
- an electronic switch coupled between the first and second terminals, the switch being operable between conductive and non-conductive states by control signals applied thereto to close and open a circuit between the first and second terminals;
- a control unit for providing control signals to the electronic switch;
- a timer including reset capability;
- and
- a motion detector responsive to motion of the module to provide a reset signal for the timer, and wherein:
- the timer is operative when reset to initiate a predetermined timing interval;
- and
- the control unit is operative during the timing interval to maintain the electronic switch in the conductive state, and to maintain the electronic switch in the non-conductive state otherwise.
Dependencies are inferred from the claim text.