ZERO NO-LOAD USB POWER SUPPLY AND A METHOD FOR CONTROLLING THE POWER CONSUMPTION OF A USB POWER SUPPLY
First Claim
1. A USB power supply device comprising:
- a USB socket (2) with a receptacle (20) having first electrical connectors (5) for receiving a USB plug (1) with second electrical connectors (4) configured for mating with the first electrical connectors (5);
a converter for converting alternating current, AC, to a USB Direct Current, DC, the converter having a DC output line electrically connected to the first electrical connectors (5) for providing the DC to the first electrical connectors (5) and having an AC input line for receiving AC,a control unit electrically connected to the first electrical connectors (5) and configured for measuring current drawn from the first electrical connectors (5) and configured for creating a control signal if no power is drawn from the first electrical connectors (5) or if changes in the current drawn from the first electrical connectors occur according to predetermined criteria; and
a mechanically activatable switch (3) functionally connected to the AC input line of the converter and operative to cause connection of the AC input line of the converter to an AC power source as a consequence of the USB plug (1) being inserted into the receptacle (20) to a position where the first connectors (4) are mating with the second electrical connectors (5);
characterized in that the device comprises;
an ejector being electrically connected to the control unit for receiving the control signal, the ejector having a pusher (3) for pushing an inserted USB plug in the direction out of the receptacle (20) to a position where the first electrical connectors (5) are disconnected from the second electrical connectors (4), the pusher (3) being configured for activation of a push action as a consequence of receiving the control signal from the control unit.
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Accused Products
Abstract
A USB socket having a receptacle that comprises first electrical connectors for receiving a USB plug having second electrical connectors that are configured for mating with the first electrical connectors further comprises at least an ejector. The ejector is electrically connected to a control unit for receiving a control signal. The ejector further having a pusher for pushing an inserted USB plug in the direction out of the receptacle to a position where the first electrical connectors are disconnected from the second electrical connectors. The pusher may be configured for activation of a push action as a consequence of receiving the control signal from the control unit. Various possible embodiments thereof are shown.
26 Citations
17 Claims
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1. A USB power supply device comprising:
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a USB socket (2) with a receptacle (20) having first electrical connectors (5) for receiving a USB plug (1) with second electrical connectors (4) configured for mating with the first electrical connectors (5); a converter for converting alternating current, AC, to a USB Direct Current, DC, the converter having a DC output line electrically connected to the first electrical connectors (5) for providing the DC to the first electrical connectors (5) and having an AC input line for receiving AC, a control unit electrically connected to the first electrical connectors (5) and configured for measuring current drawn from the first electrical connectors (5) and configured for creating a control signal if no power is drawn from the first electrical connectors (5) or if changes in the current drawn from the first electrical connectors occur according to predetermined criteria; and a mechanically activatable switch (3) functionally connected to the AC input line of the converter and operative to cause connection of the AC input line of the converter to an AC power source as a consequence of the USB plug (1) being inserted into the receptacle (20) to a position where the first connectors (4) are mating with the second electrical connectors (5); characterized in that the device comprises; an ejector being electrically connected to the control unit for receiving the control signal, the ejector having a pusher (3) for pushing an inserted USB plug in the direction out of the receptacle (20) to a position where the first electrical connectors (5) are disconnected from the second electrical connectors (4), the pusher (3) being configured for activation of a push action as a consequence of receiving the control signal from the control unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for controlling the power consumption of a USB power supply device, the device comprising:
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a USB socket (2) with a receptacle (20) having first electrical connectors (5) for receiving a USB plug (1) with second electrical connectors (4) configured for mating with the first electrical connectors (5); a converter for converting alternating current, AC, to a USB Direct Current, DC, the converter having a DC output line electrically connected to the first electrical connectors (5) and having an AC input line connected to an AC power source, a control unit electrically connected to the first electrical connectors (5); and an ejector having a pusher (3) for pushing an inserted USB plug in the direction out of the receptacle (20), the ejector being electrically connected to the control unit for receiving the control signal; the method comprising; receiving a USB plug (1) in the receptacle (20) to a position where the USB plug'"'"'s (1) second electrical connectors (4) are mating with the receptacle'"'"'s (2) second electrical connectors (4); during receiving of the USB plug (1) in the receptacle (2) acting of the USB plug (1) on part of the mechanically activatable switch (3) and as a consequence causing the switch (3) to connect the AC input line of the converter to an AC power source; by the converter receiving AC from the AC power source, transforming the AC to USB DC, and providing the DC to the first electrical connectors (5); by the control unit measuring current drawn from the first electrical connectors (5) and creating a control signal if no power is drawn from the first electrical connectors (5) or if changes in the current drawn from the first electrical connectors occur according to predetermined criteria; characterized in that the method comprises; receiving the control signal from the control unit at the ejector and, as a consequence, pushing the received USB plug (1) by the pusher (3) of the ejector in a direction out of the receptacle (20) to a position where the USB plug'"'"'s (1) second electrical connectors (4) are disconnected from the receptacle'"'"'s (2) first electrical connectors (5), by the mechanically activatable switch (3), as a consequence of the pushing of the USB plug, causing disconnecting the AC input line from the AC power source. - View Dependent Claims (16, 17)
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Specification