Budgett
David Budgett, Auckland NZ
Patent application number | Description | Published |
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20110101790 | SELECTABLE RESONANT FREQUENCY TRANSCUTANEOUS ENERGY TRANSFER SYSTEM - An inductive power transfer system includes a number of controllable reactive components ( | 05-05-2011 |
20130234531 | SHORTING PERIOD CONTROL IN INDUCTIVE POWER TRANSFER SYSTEMS - The present invention provides a power supply for an inductive power transfer (IPT) system, comprising a current-fed push-pull resonant converter comprising a parallel-tuned resonant tank and a pair of switches enabling selective shorting of the resonant tank; and a controller adapted to control a shorting period of the resonant converter by selectively operating the switches. Methods for controlling an IPT power supply are also disclosed. The power supply may be controlled to regulate the output of an IPT pick-up inductively coupled with the power supply in use, or to operate at a zero voltage switching (ZVS) frequency. | 09-12-2013 |
David Mortimer Budgett, Auckland NZ
Patent application number | Description | Published |
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20100106475 | BIOPHYSICAL VIRTUAL MODEL DATABASE AND APPLICATIONS - A biophysical virtual model of a body or body section of a human subject contains measured parameter values, scan data and images from surface or full body imaging systems, and also descriptive and subject identification data. Data in the model are applied to customize external objects ergonomically to fit a subject, by adjustment or by selection when the objects are configured for one or a group of subjects. The database can be centralized and/or mobile devices carried by users can supply model data to external apparatus. Where a parameter value needed for a subject is unknown, the statistical distribution of the database and the correlation of parameters can supply a probable value and level of certainty. In connection with values that are known for an individual, complexities inherent in the combination of plural parameters can be collected in the model and used in later security screens to confirm the identity of a subject. | 04-29-2010 |
20130303971 | CATHETER AND SHUNT SYSTEM INCLUDING THE CATHETER - In one embodiment of the invention a catheter ( | 11-14-2013 |
David Mortimer Budgett, Pt Chevalier NZ
Patent application number | Description | Published |
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20150244177 | INDUCTIVE POWER TRANSFER CONTROL USING ENERGY INJECTION - The invention relates to inductive power transfer (IPT) systems, and has particular relevance to control of IPT systems, and to operation of IPT system primary power supplier. There is provided a method for controlling an IPT system primary power supply having a switched resonant circuit; the method comprising: determining the value of a parameter of the system; determining an energy injection switching pattern having a duration dependent on the parameter value; controlling the resonant circuit according to the determined energy injection switching pattern. | 08-27-2015 |