Patent application number | Description | Published |
20090096565 | Parallel gapped ferrite core - A transformer or inductor includes a core, a printed circuit board, a frame and a gapping plate. The core is positioned in a first plane A winding is located on top of a portion of the core. The frame is positioned in a second plane and the frame is located on top of the winding and has a hole. The gapping plate resides in the second plane and is disposed within the hole of the frame. The gapping plate has a smaller area than the hole of the frame and this creates a gap between the gapping plate and the frame. The magnetic flux generated during operation of the transformer or inductor radiates in a direction perpendicular to the first plane and the second plane. | 04-16-2009 |
20090197457 | Key coded power adapter connectors - A key coded power connector and a system and method for making key coded power connections are disclosed. A power connector such as a power adapter connector is configured with either a visual keying system, a physical keying system, or both. The physical keying system prevents a user from connecting a host device to a connector of the power source which does not support that host device. The visual keying system provides the user with an early indication that the particular device is not supported by a power source. The user can visually compare a marking key on the host device with the making key on the power connector and determine whether or not the power source is capable of outputting sufficient power to operate the device. The visual and physical keying systems prevents a user from improperly connecting a host device to a power source which does not support that device. | 08-06-2009 |
20100109436 | Power supply equipment for simultaneously providing operating voltages to a plurality of devices - Power supply equipment includes circuitry for converting an input voltage to first and second DC output voltages. At least one of the output voltages is programmable in response to a voltage control signal. A first output port provides the first DC output voltage to a first electronic device and a second output port provides the second DC output voltage to a second electronic device. The conversion circuitry provides power sufficient to simultaneously power the first electronic device at the first DC voltage and the second electronic device at the second DC voltage. | 05-06-2010 |
20100190384 | Key coded power adapter connectors - Key coded power connectors include a single common power connector coupled to a power supply and a plurality of mating power connectors. A mating power connector is for coupling between the power connector and an electronic device. A mating power connector has a power rating based on the power drawn by a corresponding electronic device. The power connector has a power rating based on the power rating of the power supply. The connectors are shaped as a function of power rating such that only mating power connectors having a power rating equal to or less than the power rating of the power connector can be coupled together. This prevents an electronic device from being coupled to a power supply which cannot supply sufficient power to the electronic device. | 07-29-2010 |
20100254162 | Modular power adapter - A modular power adapter and method for using the same which increases the ease of a user's travel with portable electronic devices. The modular power adapter includes an output module which may be interchangeably and detachably coupled to DC input module or an AC input module. The output module and the input module are provided in separate housing structures thereby effectively spreading the heat dissipated from the modular power adapter. | 10-07-2010 |
20100283330 | DETACHABLE TIP FOR COMMUNICATING WITH ADAPTER AND ELECTRONIC DEVICE - A detachable tip, utilized with a power adapter, includes a memory, a receiver, and a transmitter. The memory stores a character string, the character string identifying whether an approved power adapter is coupled to the detachable tip. The receiver receives an identification request from an electronic device. In response to the identification request, a transmitter transmits the stored character string to the electronic device. A controller may extract the character string from the memory and send the character string to the transmitter. Instead of a character string, the memory may store a value, which is representative of a maximum power output available. A detachable tip may include an input connector and an output connector. The input connector receives a value from the power adapter, the value being representative of a maximum power available from the power adapter. The output connector passes through the value to the electronic device. | 11-11-2010 |
20110095605 | POWER SUPPLY EQUIPMENT TO SIMULTANEOUSLY POWER MULTIPLE ELECTRONIC DEVICE - Power supply equipment is provided with two power ports for simultaneously powering two electronic devices. The equipment includes low power assemblies and high power assemblies, each of which is detachably mateable to either one of the power ports. To simultaneously power two low power devices, low power assemblies are respectively mated to each of the power ports. To simultaneously power one low power and one high power device, a low power assembly is mated to one of the power ports and a high power assembly is mated to the other power port. The low power assemblies transfer a low DC voltage, but not a high DC voltage, to low power devices. The high power assemblies transfer a high DC voltage, but not a low DC voltage, to high power devices. If a high power assembly is mated to each of the power ports, power flow is interrupted without putting supply in an overvoltage or overcurrent condition. | 04-28-2011 |
20110149613 | FLYBACK CONVERTER UTILIZING BOOST INDUCTOR BETWEEN AC SOURCE AND BRIDGE RECTIFIER - A flyback converter utilizes a boost inductor coupled between a source of AC power and a bridge rectifier to provide power factor correction. A primary winding of the flyback transformer is coupled in series with a storage capacitor across the output of the bridge rectifier. A circuit, which includes a switching transistor, is also coupled across the output of the bridge rectifier to provide a low resistance path when the switch is closed. The cores of the boost inductor and the transformer are loaded with energy when the switch is closed. When the switch opens, the energy stored in the magnetic cores is transferred to the output via the transformer secondary winding and rectification circuitry. | 06-23-2011 |
20110228486 | Power supply with low touch-temperature surface - A power supply provides a low touch-temperature surface by utilizing a plurality of spaced apart pegs which extend from a surface of a case away from heat generating components enclosed within the case. The top and side surfaces of the pegs and the surface of the case not occupied by the pegs are entirely directly exposed to ambient air. The tops of the pegs provide a touch surface having a temperature which is cooler than that at the base of the pegs. The pegs are preferably arranged to minimize heat transfer between adjacent pegs. | 09-22-2011 |
20110298306 | POWER SUPPLY EQUIPMENT UTILIZING INTERCHANGEABLE TIPS TO PROVIDE A DATA SIGNAL AND POWER FROM AN ADAPTER TO VARIOUS ELECTRONIC DEVICES - Power supply equipment includes an adapter which converts power from a power source to DC power for powering an electronic device. The adapter further includes circuitry which produces a data signal for use by the electronic device to control power flow within the electronic device. A cable, which is electrically coupled to the adapter, has a connector at its distal end. The power supply equipment further includes a plurality of tips, each of which has an input connector, an output connector and at least three conductors. The input connector of each tip is detachable mateable to the connector on the distal end of the cable. The output connector of each tip is detachably mateable to a corresponding electronic device. The conductors transfer the DC power and the data signal from the input connector to the output connector. A tip output connector has a shape and size dependent on the shape and size of a power input opening of the electronic device to which the tip corresponds. Accordingly, selection of the appropriate tip allows the adapter to provide the data signal, as well as the DC power, to various electronic devices. | 12-08-2011 |
20120212078 | POWER SUPPLY EQUIPMENT UTILIZING INTERCHANGEABLE TIPS TO PROVIDE POWER AND A POWER INDICATION SIGNAL TO AN ELECTRONIC DEVICE - Power supply equipment includes an adapter which converts power from a power source to DC power for powering an electronic device. The power supply equipment includes circuitry which produces a power indication signal for use by the electronic device to control power drawn by the electronic device. A cable, which is electrically coupled to the adapter, has a connector at its distal end. The power supply equipment further includes a tip which has an input connector and an output connector. The input connector of the tip is detachable mateable to the connector on the distal end of the cable. The output connector of the tip is detachably mateable to the electronic device. The tip output connector has a shape and size dependent on the shape and size of a power input opening of the electronic device. The tip provides the power indication signal, as well as the DC power, to the device. | 08-23-2012 |
20120314456 | SYNCHRONOUS AC RECTIFIED FLYBACK CONVERTER UTILIZING BOOST INDUCTOR - A flyback converter utilizes a boost inductor coupled between a source of AC power and a synchronous rectifier to provide power factor correction. The synchronous rectifier includes four field-effect transistors configured in a bridge arrangement. Control circuitry controls the on/off states of opposite pairs of the FETs to provide synchronous rectification of the AC power. A primary winding of the flyback transformer is coupled in series with a storage capacitor across the output of the synchronous rectifier. A circuit, which includes a switching transistor, is also coupled across the output of the synchronous rectifier to provide a low resistance path when the switch is closed. The cores of the boost inductor and the transformer are loaded with energy when the switch is closed. When the switch opens, the energy stored in the magnetic cores is transferred to the output via the transformer secondary winding and rectification circuitry. In one embodiment, a separate switching transistor is not used and its function is performed by the rectifier FETs. | 12-13-2012 |
20130093263 | POWER SUPPLY EQUIPMENT PROVIDING A DATA SIGNAL, IDENTIFICATION INFORMATION AND POWER TO AN ELECTRONIC DEVICE - Power supply equipment includes an adapter to convert power from a power source to a DC power for powering an electronic device. The adapter includes circuitry for producing an analog data signal for use by the electronic device to control an amount of power drawn by the device. A cable has an output connector with a plurality of conductors to transfer the DC power and the analog data signal to the electronic device. The connector further includes circuitry to receive a data request from the electronic device and in response transmit a data output which identifies the power supply equipment to the electronic device. | 04-18-2013 |
20130300376 | POWER SUPPLY SYSTEM PROVIDING POWER AND ANALOG DATA SIGNAL FOR USE BY PORTABLE ELECTRONIC DEVICE TO CONTROL BATTERY CHARGING - A power supply system includes data circuitry as well as power circuitry to generate DC power for use by a portable electronic device having a rechargeable battery. The DC power, ground and two signaling lines are provided in a power supply connector which detachably mates with an electronic device power input port. In response to a first signal from the electronic device transmitted over one of the signaling lines, the data circuitry provides an analog signal to the electronic device over the other signaling line. The electronic device determines a parameter level, such as a current level, of the analog signal, and based on the determined parameter level controls charging of its battery. | 11-14-2013 |