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Sensor node voltage clamping circuit and method

Patent Number: 8111047
Publication Date: 2012-02-07
Inventors: Brohlin, Paul L.; Betty, Christopher Lee; Khanchandani, Deepak Mohanlal

A voltage clamping circuit includes a current source having a fixed current source and a variable current source and a variable resistor receiving current from the current source. The variable resistor varies its resistance in response to an environmental operating condition. The voltage clamping circuit also includes an amplifier configured to compare a sensor node voltage with a reference voltage, the sensor node voltage being in communication with the voltage drop across the variable ...

Technique for conveying overload conditions from an AC adapter to a load powered by the adapter

Patent Number: 8111046
Publication Date: 2012-02-07
Inventors: Kok, James Mun Wai; Sawyers, Thomas P.

A constant voltage/constant power AC adapter converts AC voltage to DC voltage to provide power to a plurality of loads. The adapter's output characteristic is approximately a constant voltage as long as the output current draw by the loads is less than a threshold (e.g., a safety threshold for the adapter). If, however, the power draw on the adapter is such that the output current exceeds the threshold, the adapter then decreases its output voltage to maintain the power draw at a safe ...

Auxiliary power adapter having device controls

Patent Number: 8111044
Publication Date: 2012-02-07
Inventors: Suzuki, Takahiko; Griffin, Jr., Paul P.

An accessory for a portable electronic device, such as a digital music player, includes a set of device controls for controlling the portable electronic device. The accessory includes a microprocessor and a memory that contains function codes corresponding to the functions selected by the controls. Preferably, the accessory is a charger is adapted to be inserted into for a 12-volt car auxiliary power outlet and the protruding face of the charger body is a click wheel controller that ...

Method and apparatus for charging an electric vehicle from a streetlight

Patent Number: 8111043
Publication Date: 2012-02-07
Inventor: Redmann, William Gibbens

Streetlights along streets and in parking lots are often suitably located for a vehicle to park in immediate proximity. An electric vehicle charging system and method allows the power supply previously dedicated to the streetlight to be used for electric vehicle recharging whenever the streetlight is not lit. In some embodiments, if the total of the current drawn by the electric vehicle charging and the lit streetlight is less than the rating of the streetlight power supply, then charging ...

Integrated wireless resonant power charging and communication channel

Patent Number: 8111042
Publication Date: 2012-02-07
Inventor: Bennett, James D.

A power delivery system wirelessly deliver electric power and a communication signal to a target device. The power delivery system includes a power transmitting unit having a power source operable to source alternating current power and a sending resonant coupling component operable to couple the alternating current power to a coil for wireless power transmission by a non-radiated magnetic field at a target resonant frequency. The power transmitting unit is capable of dynamically tuning the ...

Power transmission control device, power reception control device, non-contact power transmission system, power transmission device, power reception device, and electronic instrument

Patent Number: 8111041
Publication Date: 2012-02-07
Inventors: Suzuki, Katsuya; Yamazaki, Manabu; Onishi, Kota; Kato, Hiroshi; Sogabe, Haruhiko; Suzuki, Kuniharu; Yoda, Kentaro; Kamijo, Takahiro

A power reception device transmits authentication information (e.g., start code, manufacturer ID, product ID, rated power information, and resonance characteristic information) to a power transmission device before starting normal power transmission by a non-contact power transmission system. The power transmission device performs instrument authentication based on the received authentication information, and regulates the maximum transmission power is regulated to conform to a ...

Method and apparatus for handling a charging state in a mobile electronic device

Patent Number: 8111040
Publication Date: 2012-02-07
Inventors: Habicher, Michael F.; Guthrie, Martin G. A.; Veselic, Dusan; Skarine, Alexei

In accordance with the teachings described herein, a method and apparatus for handling a charging state in a mobile electronic device is provided. A universal serial bus (USB) interface may be used for connecting the mobile device to a USB host. A processing device may be used to control operation of the mobile device and receive an enumeration acknowledgement signal from the USB host via the USB interface and generate an enable signal upon receiving the enumeration acknowledgement signal. ...

Multiple function current-sharing charging system and method

Patent Number: 8111039
Publication Date: 2012-02-07
Inventors: Bayne, Ryan M.; Simoes, Felipe O.; Todd, Colin N.

Multiple function current-sharing charging systems and methods are provided. Where first and second rechargeable power supplies are connected to a charging system, a first charging current is provided to the first rechargeable power supply and a second charging current is provided to the second rechargeable power supply. Upon detection of a predetermined charge level of one of the rechargeable power supplies, a third charging current is provided to the first rechargeable power supply and a ...

Vehicle electronic systems with battery management functions

Patent Number: 8111038
Publication Date: 2012-02-07
Inventors: Tang, Ruichao; Zhang, Wei; Wang, Shaolan

An electronic system in a vehicle includes a motor, a charger, a battery pack, and a bus. The motor drives wheels and propellers of the vehicle. The charger generates charging power according to a control signal. The battery pack coupled to the charger and the motor is operable for generating the control signal based upon a status of each cell of multiple cells in the battery pack, for receiving the charging power via a charging path when the vehicle is stalled, and for powering the motor ...

Method for battery state-of-health monitoring using battery voltage during vehicle starting

Patent Number: 8111037
Publication Date: 2012-02-07
Inventors: Kapsokavathis, Nick S.; Zhang, Xiaodong; Walters, David W.; Tang, Xidong; Zhang, Yilu; Salman, Mutasim A.

A method is provided for determining a battery's state-of-health. An initial battery voltage is measured after a first voltage drop during an initiation of an engine cranking phase. A battery voltage is monitored during the remainder of the engine cranking phase. A lowest battery voltage is determined during the remainder of the engine cranking phase. A determination is made if a voltage difference between the lowest battery voltage and the initial battery voltage at the initiation of the ...

System for electrically connecting and disconnecting a vehicle generator from a vehicle storage unit

Patent Number: 8111036
Publication Date: 2012-02-07
Inventor: Rosenstock, Stephen George

An energy recovery system for a vehicle uses an electric generator, such as an alternator, connected to the vehicle's engine or a wheel to recover kinetic energy when a vehicle decelerates and convert the kinetic energy into stored electrical energy. No engine controller or computer control is used to activate and deactivate the system which works using simple electrical and mechanical switches that activate and deactivate in response to the vehicle's operating ...

Charging system, charging device and battery pack

Patent Number: 8111035
Publication Date: 2012-02-07
Inventors: Nakatani, Yoshio; Nishino, Hajime; Asakura, Jun

A charging system is provided with a secondary battery, a charging current supplier for supplying a charging current to the secondary battery, an internal resistance detector for detecting the resistance value of the internal resistance of the secondary battery, and a charge controller for increasing the charging current to be supplied to the secondary battery by the charging current supplier as the resistance value detected by the internal resistance detector ...

Solar-powered charger with heat-dissipating surface

Patent Number: 8111034
Publication Date: 2012-02-07
Inventor: Fowler, David

A solar-powered charger includes a solar collector configured to generate electrical energy when exposed to light, a connector coupled to the solar collector to provide a pathway for discharging the electrical energy to an external device and a casing comprising a surface configured to dissipate ...

Method for managing a bank of rechargeable batteries using the coup de fouet effect on charging

Patent Number: 8106632
Publication Date: 2012-01-31
Inventors: Delaille, Arnaud; Perrin, Marion

The batteries of at least one battery subset are partially and preferably simultaneously charged; during this partial charging, electrical parameters representative of a coup de fouet effect on charging are measured to enable the extent of discharge of each of the batteries of the subset to be analyzed; the batteries are then charged sequentially with an order of priority that depends on the extent of discharge of the different batteries; priority is preferably given to charging the most ...

Charge control device for batteries

Patent Number: 8106631
Publication Date: 2012-01-31
Inventor: Abe, Kunihiro

In a charge control device installable in a motor vehicle and designed to execute charge control for a battery based on an output power of a power generator, a nonvolatile memory stores therein data required to execute the charge control for the battery. A communication circuit is communicably connectable to first and second devices different from each other. The first device allows entrance of information required to rewrite the data stored in the nonvolatile memory. A rewriting unit ...

Method and system for operating a portable electronic device in a power-limited manner

Patent Number: 8106630
Publication Date: 2012-01-31
Inventors: Bollinger, Steven; Tupman, David John

Improved techniques to manage operation of a portable electronic device having a substantially depleted battery when power is available from an external, power-limited source are disclosed. In one embodiment of the invention, the substantially depleted battery can be initially charged while a power-intensive operation is delayed. Once the battery has adequate charge to assist the external, power-limited source in powering the portable electronic device, the power-intensive operation can be ...

Charging method and device

Patent Number: 8106629
Publication Date: 2012-01-31
Inventors: Lai, Ming-Feng; Chiu, Hsin-Hsiung

A charging method for a battery includes: enabling a charging device to charge the battery with a first charging voltage having a value that is increasing and a first charging current having a value that is constant; and when it is determined that the value of the first charging voltage is equal to a maximum charging voltage value of the battery, enabling the charging device to charge the battery with a second charging voltage having a value that is equal to a maximum charging voltage value ...

Capacitor charging apparatus

Patent Number: 8106628
Publication Date: 2012-01-31
Inventors: Kobayashi, Shinya; Yamamichi, Yoshifumi

A capacitor charging apparatus includes a transformer and an output capacitor charged with current flowing through a secondary coil of the transformer, and charges the output capacitor by performing a switching control of a switching transistor provided on a path leading to a primary coil of the transformer. A switching control unit controls on and off of the switching transistor. A voltage detector monitors a voltage at a tap provided in the secondary coil of the transformer. The switching ...

Method and system for co-operative charging of electric vehicles

Patent Number: 8106627
Publication Date: 2012-01-31
Inventor: Rossi, John

A method and system provide for the cooperative charging of electric vehicles. By using power line communications, chargers of the electric vehicles who are serviced by the same distribution transformer can form self-contained local area networks due to the nature of power line communications. After the chargers of the electric vehicles are coupled to one another through power line communications, they can form a token ring network. According to this token ring network, a predetermined ...

Robot for use with robot battery charging station

Patent Number: 8106626
Publication Date: 2012-01-31
Inventors: Li, Xiong; Sip, Kim-Yeung

A battery charging station, for a robot, includes a base, two side-walls barriers, a stop, a supporting arm, a charging connector, and a transmitter. The side-walls barriers are separately mounted on the base. The stop is mounted on the back of the base to form a docking space together with the barriers and the base. The supporting arm is cantilever mounted on the stop by one free end thereof with the other end extending into the space over the docking space. The charging connector is ...

Noncontact transmission device

Patent Number: 8106625
Publication Date: 2012-01-31
Inventors: Takaishi, Konomu; Nohara, Kazunori

A noncontact transmission device (100) is provided with a monitoring clock oscillator (112) for outputting a monitoring clock (LF0) having a frequency lower than that of a system clock (CK0); a control circuit (108); a memory (114) having information (D) stored to be used by the control circuit (108); and a reset circuit (116). The control circuit (108) includes an internal storage circuit for storing the information (D) read ...

Battery pack, charging device, and electronic device and obtaining a charge state thereof

Patent Number: 8106624
Publication Date: 2012-01-31
Inventor: Hayashi, Isao

A charging device which enables the charged state and remaining capacity of the battery pack to be accurately grasped. In the charging device on which a battery pack including a nonvolatile memory and a secondary battery cell is mounted, a charge control microcomputer measures a charging current supplied to and a charging voltage applied to the battery pack. Charged state data indicative of the charged state of the battery pack is determined based on at least one of the measured charging ...

Conservation of electrical energy and electro-magnetic power in battery charger with AC drive

Patent Number: 8106623
Publication Date: 2012-01-31
Inventor: Lam, Dat D.

The present disclosure is an energy-efficient rapid battery charger, using inductive windings rather than transformer to charge a battery. The apparatus operates with an AC power source rectifying a high voltage DC output or AC source transformed to a low DC voltage output. The control driver frequencies vary from several hundred Hz to thousand of Hz. A capacitor, inductor, and power line are arranged in a series parallel combination tank circuit that operates over the on and off time of a ...

Power distributor and semiconductor device having the same

Patent Number: 8102159
Publication Date: 2012-01-24
Inventor: Park, Kun-Woo

A power distributor includes a large reservoir capacitor, a switch coupled between at least one power supply line and the large reservoir capacitor, and a controller configured to turn on or off the switch based on whether a circuit block connected to the power supply line is in operation or ...

Phase synchronization circuit

Patent Number: 8102158
Publication Date: 2012-01-24
Inventors: Sekine, Fusae; Ogino, Naoyuki

A phase synchronization circuit comprising: a charging/discharging-circuit to charge/discharge a capacitor in accordance with a drive-signal, charging and/or discharging current-values of the capacitor being settable; an oscillation-circuit to output an oscillation-signal having a frequency corresponding to a charging-voltage; a drive-circuit to output as the drive-signal a first drive-signal for matching charging and discharging periods when a phase-difference and the oscillation-signal is ...

Multi-output power supply device having charge pump circuit

Patent Number: 8102157
Publication Date: 2012-01-24
Inventor: Abe, Hirohisa

A multi-output power supply device of low noise is disclosed that converts a first input voltage to plural different voltages. The multi-output power supply device includes a first power supply circuit for generating a constant voltage from the first input voltage, and outputs the constant voltage through a first output terminal; and one or more second power supply circuits each including a charge pump circuit for generating a constant voltage from the output voltage from the first power ...

Differential amplifier circuit and electric charge control apparatus using differential amplifier circuit

Patent Number: 8102156
Publication Date: 2012-01-24
Inventor: Nodo, Ippei

A differential amplifier circuit comprises a first input transistor including a control electrode serving as a non-inversion input terminal and a second input transistor including a control electrode serving as an inversion input terminal. These first and second input transistors constitute a difference pair. A bias current generation circuit section is provided to generate a bias current flowing to the first and second input transistors. An offset adjustment circuit section is provided to ...

Discharge controller

Patent Number: 8102155
Publication Date: 2012-01-24
Inventors: Muraoka, Yoshiyuki; Nakai, Haruya

A discharge controller includes a secondary battery, a switch section for opening/closing a discharge path from the secondary battery to a load, a voltage detector for detecting a terminal voltage of the secondary battery, and a cut-off voltage control section for controlling the switch section to be opened when the terminal voltage as detected by the voltage detector is not more than a predetermined cut-off voltage of discharge V_E, while measuring an amount of decrease per unit ...

Energy source isolation and protection circuit for an electronic device

Patent Number: 8102154
Publication Date: 2012-01-24
Inventors: Spurlin, Jon M.; Bishop, Dennis P.

An energy source isolation and protection circuit is provided for an electronic device, such as a patient-worn or patient-carried medical device. The isolation and protection circuit includes a supply voltage rail, a reference voltage rail, an electrical load coupled across the supply voltage rail and the reference voltage rail, and an energy source for supplying a voltage to the electrical load via the supply voltage rail and the reference voltage rail. The isolation and protection circuit ...

Battery voltage adjusting device

Patent Number: 8102153
Publication Date: 2012-01-24
Inventors: Saigo, Tsutomu; Ishikawa, Satoshi

The battery voltage adjusting device includes: a voltage detecting means provided corresponding to a block including at least one unit cell of an on-vehicle high voltage battery consisting of a plurality of the unit cells connected in series and detecting a terminal voltage of the unit cell in the block; a charge-discharge means charging or discharging the unit cell in the block on the basis of the terminal voltage of the unit cell detected by the voltage detecting means; a temperature ...

Deterioration detecting method and deterioration suppressing method for rechargeable lithium batteries, deterioration detector, deterioration suppressor, battery pack, and charger

Patent Number: 8102152
Publication Date: 2012-01-24
Inventors: Inoue, Kaoru; Shirane, Takayuki; Ugaji, Masaya

According to a deterioration detecting method for rechargeable lithium batteries, battery voltages of a rechargeable lithium battery before and after the completion of charging or discharging are measured. An evaluation value is calculated based on the measured battery voltages. This evaluation value is compared with a reference value of the rechargeable lithium battery stored in advance. A deterioration level of the rechargeable lithium battery is estimated based on this comparison result. ...

Terminal having real time clock (RTC) operator and method of RTC operation using the same

Patent Number: 8102151
Publication Date: 2012-01-24
Inventor: Lee, Ju Hwan

A method of operating a Real Time Clock (RTC) in a terminal is provided. The method includes detecting a clock signal transmitted to an RTC block when the main power supply is switched off, and supplying a power to the RTC block for its operation by charging and discharging the power periodically supplied from the backup battery according to the detected clock signal. A DC/DC converter connected to a backup battery is periodically switched on and off, and a capacitor is charged and ...

Electronic apparatus, charger, charging system, and charging method

Patent Number: 8102150
Publication Date: 2012-01-24
Inventor: Oguri, Shinji

An electronic apparatus 100 has a main circuit 4 operable by a power supply from a battery 1, and a switch 21 for changing ON/OFF of the power supply from the battery 1 to the main circuit 4. A switch control signal is produced to switch ON/OFF of the switch 21 responsive to whether or not the electronic apparatus 100 is connected to the charger 200. If the electronic apparatus 100 is removed from the charger 200, ...

Charger capable of performing integrated control and separate control of parallel operations

Patent Number: 8102149
Publication Date: 2012-01-24
Inventor: Hwang, Ho Chul

The present invention relates to a charger capable of performing the integrated control and separate control of parallel operations. The charger includes a plurality of charging modules connected in parallel with each other. Each of the charging modules includes a rectification unit for converting input AC power into DC power. The system also includes a power conversion unit, a switching control unit, a DC unit, a detection unit, and a computation control unit. The computation control unit ...

Augmented distribution transformer and method of making same

Patent Number: 8102148
Publication Date: 2012-01-24
Inventors: King, Robert Dean; Ross, John Anderson Fergus; Hershey, John Erik; Dell'Anno, Michael Joseph; Hartman, Michael James; Zinser, Richard Louis

A method, system, and apparatus including a distribution transformer having a communication module. The distribution transformer is configured to convert a first high voltage electricity from a high voltage distribution line to a first low voltage electricity and convert a second low voltage electricity from a low voltage power line to a second high voltage electricity. The communication module is programmed to provide time data representing time of day information along the low voltage ...

Wireless multi-charger system and controlling method thereof

Patent Number: 8102147
Publication Date: 2012-01-24
Inventor: Jung, Chun-Kil

Disclosed are a wireless multi-charger system capable of saving the total charging time of a large number of wireless power transmission devices since one wireless multi-power transmission device includes a plurality of the wireless power transmission devices so that a large number of the wireless power transmission devices can be charged with electricity, and preventing the damage of the wireless power transmission devices and the wireless multi-power transmission device although foreign ...

Remaining-amount estimation device and method for secondary battery

Patent Number: 8102146
Publication Date: 2012-01-24
Inventor: Suzuki, Yusuke

An SOC-estimation-value-depending gain selection unit multiplies the deviation of an SOC estimation value (last calculated value) relative to an estimated SOC by a correction gain G1 to calculate a correction value. The SOC-estimation-value-depending gain selection unit selects a relatively small correction gain G1 when the SOC estimation value lies in the range in proximity to excessive charging and the SOC estimation value is corrected to a smaller value (toward the SOC ...

Internal packaged alternator with microprocessor controlled multi-input regulator

Patent Number: 8102145
Publication Date: 2012-01-24
Inventors: Harmon, Jack D.; Merrill, Thomas A.; Zhou, Mingshe

A vehicle alternator comprises a housing with a voltage regulator positioned within the housing. The alternator further comprises a rotor having a field coil positioned within the housing and a stator positioned within the housing. The stator includes stator windings configured to provide an output voltage in response to rotation of the rotor. The voltage regulator is configured to receive a battery temperature signal from outside of the alternator and control the current provided to the ...

Power converter for a solar panel

Patent Number: 8102144
Publication Date: 2012-01-24
Inventors: Driscoll, William J.; Capp, F. William

A solar array power generation system includes a solar array electrically connected to a control system. The solar array has a plurality of solar modules, each module having at least one DC/DC converter for converting the raw panel output to an optimized high voltage, low current output. In a further embodiment, each DC/DC converter requires a signal to enable power output of the solar ...

Charger for lithium ion secondary battery, and method of charging the same

Patent Number: 8098053
Publication Date: 2012-01-17
Inventor: Sato, Masanao

A charger for a lithium ion secondary battery includes a series circuit of a reverse-current preventive switch, a charging switch and a current-detecting resistor, connected between the battery and the ground a charging control circuit controlling the reverse-current preventive switch and the charging switch, so as to make the battery repeat charging and opening at regular intervals, and so as to detect voltage difference between the specified voltage and the open circuit voltage of the ...

Battery charger

Patent Number: 8098052
Publication Date: 2012-01-17
Inventor: Umetsu, Koji

A batter charger for charging a secondary batter using a power supply circuit which converts an AC input into a DC output, includes a first resistor for detecting constant-current control and a second resistor for detecting end of charging. The first resister and the second register are inserted in series in a current path of the charging current. The power supply circuit has output characteristics of a constant-current control characteristic and a constant-voltage control characteristic. ...

Temperature-based charge and discharge control for a battery

Patent Number: 8098051
Publication Date: 2012-01-17
Inventors: Idzik, Jacek S.; Litingtun, Siong

A protection circuit for a battery pack, comprising: a thermistor for indicating a temperature of a cell in the battery pack; a first comparator coupled to the thermistor for determining whether the temperature has exceeded a charge cut-off temperature threshold for the cell, and if so, for turning off a first switch in series with the cell to prevent charging of the cell; and, a second comparator coupled to the thermistor for determining whether the temperature has exceeded a discharge ...

Charge/discharge control device for secondary battery and vehicle equipped with the same

Patent Number: 8098050
Publication Date: 2012-01-17
Inventor: Takahashi, Hidenori

A charge/discharge control device for a secondary battery mounted on a vehicle includes a temperature sensor detecting a temperature of a battery and a control device setting a battery power charged to and discharged from the battery base on the temperature detected by the temperature sensor and the state of charge of the battery. The control device sets at least one of a first value, a second value and a third value to be increased as the battery temperature rises, the first value ...

Techniques for charging a wireless device

Patent Number: 8098049
Publication Date: 2012-01-17
Inventors: Matthews, Michael Thano; Morris, Julie Anne; Zawacki, Jennifer Greenwood

A technique for charging a wireless device includes detecting a physical presence of a user with respect to the device. A magnetic force is provided between a charging pad and the device only when the physical presence of the user, with respect to the device, is not detected. In this case, a rechargeable power source of the device receives a charging current from the charging pad via conductive contacts of the ...

Battery charger with integrated cell balancing

Patent Number: 8098048
Publication Date: 2012-01-17
Inventor: Hoff, Michael

A battery charger containing circuitry including integrated cell balancing and automatic cell configuration determination is presented. The charger automatically adapts output current to different battery configurations. The charger also ensures that all the cells within a battery configuration are at roughly the same ...

Battery apparatus for controlling plural batteries and control method of plural batteries

Patent Number: 8098047
Publication Date: 2012-01-17
Inventors: Kai, Tsuyoshi; Miyazaki, Hideki; Emori, Akihiko; Kudo, Akihiko

Lower order control devices control plural battery cells configuring plural battery modules. An input terminal of the low order control device in the highest potential, an output terminal of the low order control device in the lowest potential, and a high order control device are connected by isolating units, photocouplers. Diodes which prevent a discharge current of the battery cells in the battery modules are disposed between the output terminal of the low order control device and the ...

Battery charging apparatus having a chute and method of recharging a battery

Patent Number: 8098046
Publication Date: 2012-01-17
Inventor: Poisner, David

The embodiments of the invention relate to a novel apparatus and method for a battery charging system in a shared environment, as well as for monitoring battery usage and tracking battery location. In one embodiment, the battery charging chute comprises a housing configured to receive a battery via an insertion slot and configured to dispense a battery through a dispensing slot. Within the housing, charging terminals are disposed is a spaced or continuous manner, to come in contact with the ...

Connector device, method of manufacturing the same, and battery pack using the same

Patent Number: 8098045
Publication Date: 2012-01-17
Inventor: Okano, Fumitaka

A connector device includes a circuit board and a connector body, and the connector body includes a housing and a connection terminal provided inside the housing. A silicon resin is applied to fill a gap between the connector body and the circuit board. The application of the silicon resin can prevent a mold resin used to seal the connector device and a battery pack body from entering from the gap into the housing. Thereby, a connector device reliably establishing conduction and a battery ...

Vehicle charging system, vehicle charging device and electric vehicle

Patent Number: 8098044
Publication Date: 2012-01-17
Inventor: Taguchi, Tomonari

When a connector portion is coupled, switching dampers block a vehicle compartment air intake duct and a vehicle compartment air discharge duct, respectively. By a blowing fan, the air-conditioned air supplied through an air-conditioned air supply conduit flows through an outside air intake duct, a power supply unit, an outside air discharge duct, and an air-conditioned air discharge conduit in turn, and cools a ...

Induction type power supply device

Patent Number: 8098043
Publication Date: 2012-01-17
Inventor: Lin, Jung-Tsung

An induction type power supply device includes a power supply base unit having a connection interface connectable, an oscillator circuit for producing an AC signal upon connection of the connection interface to an electric outlet, a driver circuit for amplifying the AC signal and a primary inductor for obtaining a resonant frequency and releasing the AC signal, and an attached induction device placed on the power supply base unit and having a secondary inductor for receiving the AC signal ...