Universal voltage converter and inductive power coupling
First Claim
1. A voltage converter for converting an input voltage to an output voltage, said voltage converter comprising:
- a primary element comprising;
an input circuitry configured to receive the input voltage from a power supply, the input circuitry comprising;
a chopper configured to generated a chopped voltage from a voltage derived from the input voltage, the chopped voltage being at a chopper frequency,an inductive transformer unit configured to transform the chopped voltage to a chopped AC voltage,a first magnet configured to generate a magnetic field;
a switch configured to monitor a direction of the magnetic field; and
a second element, attachable to the primary element, the second element comprising;
a second magnet configured to generate a second magnetic field, said second magnet oppositely opposed to the first magnet; and
an output circuitry configured to convert the chopped AC voltage of the inductive transformer unit to the output voltage, said output voltage having a frequency lower than the chopper frequency, wherein the switch is configured to;
determine the output circuitry is proximate to the input circuitry by determining an alteration of the direction of the magnetic field, wherein said alteration of said direction of the magnetic field causing the first magnetic field to pass substantially vertically through the switch; and
remove said input voltage from said input circuitry when the output circuitry is determined not proximate to the input circuitry.
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Accused Products
Abstract
The present invention relates to a Voltage converter (100) for converting an input voltage (V10) to an output voltage (V20) comprising an input circuitry (102) for receiving the input voltage (V10) from a power supply (112), wherein the input circuitry includes chopper means (110) for chopping a voltage (V12) derived from the input voltage (V10) at a chopper frequency to a chopped voltage (V14), an inductive transformer unit (106) for transforming the chopped voltage (V14) to a chopped AC voltage (V16), and an output circuitry (104) for converting the chopped AC voltage (V16) of the inductive transformer unit (106) to the output voltage (V20) having a lower frequency than the chopper frequency.
19 Citations
14 Claims
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1. A voltage converter for converting an input voltage to an output voltage, said voltage converter comprising:
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a primary element comprising; an input circuitry configured to receive the input voltage from a power supply, the input circuitry comprising; a chopper configured to generated a chopped voltage from a voltage derived from the input voltage, the chopped voltage being at a chopper frequency, an inductive transformer unit configured to transform the chopped voltage to a chopped AC voltage, a first magnet configured to generate a magnetic field; a switch configured to monitor a direction of the magnetic field; and a second element, attachable to the primary element, the second element comprising; a second magnet configured to generate a second magnetic field, said second magnet oppositely opposed to the first magnet; and an output circuitry configured to convert the chopped AC voltage of the inductive transformer unit to the output voltage, said output voltage having a frequency lower than the chopper frequency, wherein the switch is configured to; determine the output circuitry is proximate to the input circuitry by determining an alteration of the direction of the magnetic field, wherein said alteration of said direction of the magnetic field causing the first magnetic field to pass substantially vertically through the switch; and remove said input voltage from said input circuitry when the output circuitry is determined not proximate to the input circuitry. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An inductive power coupling comprising:
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a first coupling member connected to a power supply via a set of primary conductors, the first coupling member comprising; a first signal shaping circuit configured to convert a nominal AC power level (Fnom) into a higher frequency power (Fhigh); and an automatic power switch connected to the set of primary conductors, said power switch configured to determine a direction of a magnetic field; and a second coupling member configured to couple to the first coupling member to inductively receive the higher frequency power transferred from the first coupling member, the second coupling member comprising; a second signal shaping circuit configured to convert the inductively-received higher frequency power (Fhigh) into the nominal AC power level (Fnom), wherein each of the first and second coupling members comprises; a set of inductive coils configured to inductively transfer power, a permanent magnet configured to couple the first coupling member and the second coupling member together, a sealing capsule positioned around the respective coupling member;
wherein the power switch is activated to provide power to the first coupling member when the direction of a magnetic field generated by the permanent magnet passes vertically through the power switch. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification