Portable, rechargeable power supply
First Claim
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1. A portable, rechargeable power supply, comprising:
- a portable casing;
a rechargeable battery located within said casing;
a voltage converter for converting a D.C. output voltage from said battery into an A.C. voltage;
a rectifier circuit for converting an A.C. input voltage into a D.C. voltage and supplying the D.C. voltage to said battery;
a transformer having a first winding connected to said voltage converter, a second winding connected to said rectifier circuit, and a third winding operatively associated with each of said first and second windings;
an input/output socket connected to said third winding; and
switching means including a first switch for enabling said first and third windings of said transformer to supply an A.C. voltage from said voltage converter to said socket, and a second switch for enabling said second and third windings of said transformer to supply an A.C. voltage from said socket to said rectifier circuit to recharge said battery.
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Abstract
A portable power supply includes a rechargeable battery in a casing. Power is supplied from the battery to a socket by means of a D.C./A.C. voltage converter and a step-up transformer. When the socket is connected to an external source of power, the battery is charged by means of an additional winding in the transformer and a rectifier.
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2 Claims
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1. A portable, rechargeable power supply, comprising:
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a portable casing; a rechargeable battery located within said casing; a voltage converter for converting a D.C. output voltage from said battery into an A.C. voltage; a rectifier circuit for converting an A.C. input voltage into a D.C. voltage and supplying the D.C. voltage to said battery; a transformer having a first winding connected to said voltage converter, a second winding connected to said rectifier circuit, and a third winding operatively associated with each of said first and second windings; an input/output socket connected to said third winding; and switching means including a first switch for enabling said first and third windings of said transformer to supply an A.C. voltage from said voltage converter to said socket, and a second switch for enabling said second and third windings of said transformer to supply an A.C. voltage from said socket to said rectifier circuit to recharge said battery. - View Dependent Claims (2)
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Specification