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US 2015/0308640 A1Published application
Electronic circuits to extend battery life time
OwnerAndrew J. Millerinventor
Life of this patent
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Abstract
A low-current battery operated apparatus with a first voltage boosting circuit for operation with depleted batteries and a second circuit for operating with non-depleted batteries, and a circuit selector switch for selectively connecting a low-current component such as an LED with the first circuit or the second circuit.
Claims20
A battery operated flashlight comprising:
- a light emitting component;
- one or more batteries;
- a first circuit for operation of said light emitting component with non-depleted batteries;
- a second circuit for operation of said light emitting component with depleted batteries;
- said second circuit comprising a transistor, said transistor comprising a base, a collector, and an emitter;
- said second circuit comprising a first wire and a second wire;
- said first and said second wires wrapped around a ferrite core;
- a resistor connecting said first wire and said second wire in series with one another;
- said first wire connecting said base of said transistor to said resistor;
- said second wire connecting said collector of said transistor to said resistor;
- and
- a circuit selector switch for selectively connecting said light emitting component with said first circuit or said second circuit.
9 more elements
An electrical circuit comprising:
- an electrical load;
- one or more batteries;
- a first circuit for operation of said load with non-depleted batteries;
- a second circuit for operation of said load with depleted batteries;
- said second circuit comprising a transistor, said transistor comprising a base, a collector, and an emitter;
- said second circuit comprising a first wire and a second wire;
- said first and said second wires wrapped around a ferrite core;
- a resistor connecting said first wire and said second wire in series with one another,
- said first wire connecting said base of said transistor to said resistor;
- said second wire connecting said collector of said transistor to said resistor;
- and
- a circuit selector switch for selectively connecting said load with said first circuit or said second circuit.
9 more elements
Dependencies are inferred from the claim text.