Battery based portable power supply
First Claim
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1. A portable power supply comprising:
- a housing;
a current source disposed in the housing;
a first battery cell connected to the current source;
a third battery cell connected in parallel to the first battery cell;
a first transistor connected in parallel to the first battery cell;
a second battery cell connected in series to the first battery cell;
a second transistor connected in parallel to the second battery cell;
a first local controller connected to the first and second transistors for controlling the first and second transistors; and
an inverter connected to the first and second battery cells.
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Abstract
A portable power supply includes a housing, and power circuitry providing an output AC waveform having a first positive voltage step level, a second higher positive voltage step level, a third lower positive voltage step level, a fourth negative voltage step level, a fifth higher negative voltage step level, and a sixth lower negative voltage step level.
33 Citations
7 Claims
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1. A portable power supply comprising:
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a housing; a current source disposed in the housing; a first battery cell connected to the current source; a third battery cell connected in parallel to the first battery cell; a first transistor connected in parallel to the first battery cell; a second battery cell connected in series to the first battery cell; a second transistor connected in parallel to the second battery cell; a first local controller connected to the first and second transistors for controlling the first and second transistors; and an inverter connected to the first and second battery cells. - View Dependent Claims (2, 7)
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3. A portable power supply comprising:
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a housing; a current source disposed in the housing; a first battery cell connected to the current source; a first transistor connected in parallel to the first battery cell; a second battery cell connected in series to the first battery cell; a second transistor connected in parallel to the second battery cell; a third battery cell connected in series to the second battery cell; a third transistor connected in parallel to the third battery cell; a fourth battery cell connected in series to the third battery cell; a fourth transistor connected in parallel to the fourth battery cell; a first local controller connected to the first and second transistors for controlling the first and second transistors; and an inverter connected to the first and second battery cells. - View Dependent Claims (4, 5, 6)
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Specification