D. C. Power packs, inter alia of the disposable king, for providing a predetermined rated voltage
First Claim
1. A power pack for a d.c. energized device, adapted to provide a predetermined d.c. voltage, said power pack having a casing of a given external shape and dimension, and supporting two output terminals located in predetermined positions, said casing including therein at least one d.c. power supply, such as a cell, adapted to output an on-load d.c. voltage lower than the said predetermined d.c. voltage and a low-consumption converter circuit for converting a signal from the d.c. power supply into a d.c. voltage signal of the predetermined value, the signal from the converter circuit being applied across the said output terminals, and control electrode type switching means, said switching means connected between one of said outpt terminals and said d.c. power supply and controlled by a load across said terminals such that in a no-load state said switching means inhibits operation of said converter circuit and the drain on the d.c. power supply.
1 Assignment
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Accused Products
Abstract
A power pack for a d.c. energized device, the power pack providing a predetermined d.c. voltage and being of given shape and dimensions, its output terminals having predetermined positions. This power pack includes a casing having the given external shape and dimensions and two output terminals in said predetermined positions. Inside the casing a d.c. power supply is provided adapted to deliver an on-load d.c. voltage lower than the said predetermined d.c. voltage, and a low consumption converter circuit for converting a signal from the d.c. power supply into a d.c. voltage signal of the predetermined value. The signal from the converter circuit is applied across the output terminals.
31 Citations
13 Claims
- 1. A power pack for a d.c. energized device, adapted to provide a predetermined d.c. voltage, said power pack having a casing of a given external shape and dimension, and supporting two output terminals located in predetermined positions, said casing including therein at least one d.c. power supply, such as a cell, adapted to output an on-load d.c. voltage lower than the said predetermined d.c. voltage and a low-consumption converter circuit for converting a signal from the d.c. power supply into a d.c. voltage signal of the predetermined value, the signal from the converter circuit being applied across the said output terminals, and control electrode type switching means, said switching means connected between one of said outpt terminals and said d.c. power supply and controlled by a load across said terminals such that in a no-load state said switching means inhibits operation of said converter circuit and the drain on the d.c. power supply.
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10. A power pack for a d.c. energized device adapted to provide a predetermined d.c. voltage, said power pack having a casing of a given external shape and dimension, and supporting two output terminals located in predetermined positions, said casing including therein at least one d.c. power supply, such as a cell, adapted to output an on-load d.c. voltage lower than the said predetermined d.c. voltage and a low-consumption converter circuit for converting a signal from the d.c. power supply into a d.c. voltage signal of the predetermined value, said converter circuit including oscillating means comprising a transistor, a high Q winding disposed in the collector circuit of said transistor, and short circuiting means in the base circuit of said transistor adapted to inhibit operation of the converter circuit and any drain on the d.c. power supply, the short circuiting means being adapted to be removed when the power pack is in use, said oscillating means being energized by the d.c. power supply;
- means for boosting the voltage of the oscillating means, said boosting means comprising said winding; and
means for rectifying the signal output of said converter circuit which is applied across said output terminals. - View Dependent Claims (11, 12)
- means for boosting the voltage of the oscillating means, said boosting means comprising said winding; and
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13. A disposable power pack for providing a predetermined rated d.c. voltage and comprising a casing of a given external shape and dimension and having two output terminals in fixed positions, and the casing enclosing at least one cell element adapted to output an on-load d.c. voltage less than the said predetermined rated d.c. voltage;
- a low-consumption converter circuit for converting a signal from the cell into a d.c. voltage signal of the predetermined rated value, the signal from the converter circuit being applied across the said output terminals; and
, means for inhibiting operation of the converter circuit, said inhibiting means being connected between one of said output terminals and said cell element and controlled by a load across said terminals, said inhibiting means connected to for controlling said converter circuit such that in a no-load state said converter circuit is inoperative and there is no drain on said cell element.
- a low-consumption converter circuit for converting a signal from the cell into a d.c. voltage signal of the predetermined rated value, the signal from the converter circuit being applied across the said output terminals; and
Specification