Power regulation system and method of supplying power to an electronic vapor provision system
First Claim
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1. An electronic vapor provision system including:
- a vaporizer for vaporizing liquid for inhalation by a user of the electronic vapor provision system;
a power supply comprising a cell or battery for supplying power to the vaporizer; and
a power regulation system for compensating for variation in a voltage level of the power supplied to the vaporizer by the power supply using pulse-width modulation, wherein the power regulation system is configured to set a duty cycle for controlling power to the vaporizer based on a measured voltage output level from the power supply, thereby providing a more consistent output level of vaporized liquid for inhalation by the user.
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Abstract
An electronic vapor provision system is provided including a pressure drop or air flow sensor for monitoring inhalation by a user through the electronic vapor provision system; and a control unit for detecting the start and end of inhalation based on readings from the sensor. The control unit is configured to monitor the cumulative period of inhalation (Ti) over a predetermined window (Tw); and transfer the electronic vapor provision system to a sleep mode if the cumulative period (Ti) exceeds a predetermined threshold (Th).
98 Citations
14 Claims
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1. An electronic vapor provision system including:
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a vaporizer for vaporizing liquid for inhalation by a user of the electronic vapor provision system; a power supply comprising a cell or battery for supplying power to the vaporizer; and a power regulation system for compensating for variation in a voltage level of the power supplied to the vaporizer by the power supply using pulse-width modulation, wherein the power regulation system is configured to set a duty cycle for controlling power to the vaporizer based on a measured voltage output level from the power supply, thereby providing a more consistent output level of vaporized liquid for inhalation by the user. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for supplying power to a vaporizer of an electronic vapor provision system, wherein the electronic vapor provision system includes a vaporizer for vaporizing liquid for inhalation by a user of the electronic vapor provision system, and a power supply comprising a cell or battery for supplying power to the vaporizer, the method comprising:
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supplying power to the vaporizer from the power supply using pulse-width modulation; and compensating for variation in a voltage level of the power supplied to the vaporizer by the power supply using pulse-width modulation by setting a duty cycle for controlling power to the vaporizer based on a measured voltage output level from the power supply, thereby providing a more consistent output level of vaporized liquid for inhalation by the user.
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Specification