| Patent Number |
Title Of Patent |
Date Issued |
| 7202633 |
Driving circuit for field effect transistor |
April 10, 2007 |
| A driving circuit is disclosed. The driving circuit comprises a secondary battery cell having a positive electrode and a negative electrode, first and second N-type field effect transistors each having a gate, a drain, and a source, first and second switching devices, connected between t |
| 7193390 |
Apparatus for connecting secondary battery cells in series and method for controlling secondary |
March 20, 2007 |
| When an output voltage of a secondary battery cell E1 is obtained, only SW1 and SW2 are turned on. As a result, a capacitor C1 is charged by a secondary battery cell E1. With a delay of a time period AT, SW1 and SW2 are turned off. SW4 and SW5 are turned on. As a result, electric charges |
| 7023180 |
Charging apparatus and method for a secondary battery of a portably electronic device |
April 4, 2006 |
| In the case of charging by a charging apparatus having a plurality of input terminals to which external power sources for charging a secondary battery are inputted, it is prevented that a current of the inputted power source is outputted to the outside from the other input terminals |
| 7023179 |
Charging apparatus and charging method |
April 4, 2006 |
| In the case of charging by a charging apparatus having a plurality of input terminals to which external power sources for charging a secondary battery are inputted, it is prevented that a current of the inputted power source is outputted to the outside from the other input terminals |
| 6961255 |
Switching power supply using controlled negative feedback in series with a switching device and |
November 1, 2005 |
| A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the |
| 6956754 |
Switching power supply using controlled negative feedback in series with a switching device and |
October 18, 2005 |
| A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the |
| 6956357 |
Charging apparatus and charging method |
October 18, 2005 |
| In the case of charging by a charging apparatus having a plurality of input terminals to which external power sources for charging a secondary battery are inputted, it is prevented that a current of the inputted power source is outputted to the outside from the other input terminals for |
| 6949913 |
Charging apparatus and charging method |
September 27, 2005 |
| In the case of charging by a charging apparatus having a plurality of input terminals to which external power sources for charging a secondary battery are inputted, it is prevented that a current of the inputted power source is outputted to the outside from the other input terminals for |
| 6917530 |
Switching power supply using controlled negative feedback in series with a switching device and |
July 12, 2005 |
| A commercially available power source is rectified by a diode bridge and a capacitor and supplied to a transformer via a terminal. One end of a primary coil is connected to the terminal and the other end is connected to a switching device. One end of a feedback coil is connected to the |
| 6650090 |
Battery pack and signal transmission system |
November 18, 2003 |
| A battery pack BP having terminals T1, T2, and T3, a detecting circuit, a signal generating circuit, a temperature, voltage, and current detecting circuit, a switching circuit, and a secondary battery connected to the switching circuit. A first external signal generating unit may be |
| 6552562 |
Current detecting apparatus and its control method |
April 22, 2003 |
| To reduce errors and decrease loss, the detecting range of current is enlarged and the current is independently detectable. A rectified voltage and a rectified current are supplied from an input terminal. Resistors 1 and 2 are serially connected between the input and output terminals. A |
| 6465913 |
Power source unit |
October 15, 2002 |
| A power source unit is constructed by an AC/DC switching power source circuit 12, a battery unit 16, switching circuits 13 and 15, detecting circuits 18 and 21 corresponding to the switching circuits 13 and 15, and stop signal forming circuits 19 and 20. In the supplying mode, the power |
| 6462972 |
Power source apparatus for providing a power source in a standby mode and a pulse generating app |
October 8, 2002 |
| An intermittent pulse generator 1 is provided between terminals Ti1 and Ti2. In the intermittent pulse generator 1, pulses are generated from an AC power source which is supplied and the generated pulses are supplied to a controller 3. The controller 3 controls a switching circuit 2 in |
| 6452820 |
Power supplying apparatus and method having a primary side insulated from a secondary side |
September 17, 2002 |
| A primary winding T1 and a switching circuit 1 are serially inserted between input terminals Ti1 and Ti2 to which an alternating current is supplied. A diode 2, a resistor 3, and a capacitor 4 are serially inserted in parallel with the primary winding T1. A detecting circuit 5 is con |
| 6373724 |
Power supply apparatus |
April 16, 2002 |
| A rectified commercially available power source is supplied to one end of a primary coil T1 of a transformer T through a terminal TM1. A capacitor C for rectifying is provided between the terminal TM1 and the ground. A switching device X is provided between the other end of the primary c |
| 6326768 |
Method, apparatus and battery pack for charging and discharging secondary batteries |
December 4, 2001 |
| A rectifying circuit (a) comprising a diode Da and a capacitor Ca is provided for a winding Ta on the secondary side of a transformer T. A rectifying circuit (b) comprising Db and Cb is provided for a winding Tb. A charging device Ra connected to one output of the circuit (a) is conn |
| 6291965 |
Battery charger |
September 18, 2001 |
| A battery cartridge has a communication terminal from which control signals are sent to a charging adapter to deliver various pieces of information necessary for electrically charging the battery cartridge, such as charging stop information, capacity information, full charge information, |
| 6169341 |
Power supplying adapter, electronic equipment, and signal transmission system |
January 2, 2001 |
| A power supplying adapter which is connected to an AC power source and generates a predetermined DC voltage is constructed by a power supplying unit in which a small power mode to output a small electric power and a large power mode to output a large electric power can be switched; a |
| 6124700 |
Charging method, charging equipment, and integrated circuit |
September 26, 2000 |
| When a secondary battery such as a lithium ion battery, etc. requiring constant-voltage charging is charged, the battery voltage and charging current of the secondary battery are detected under a specified state, and in accord with the detected state, a voltage at which charging is carri |
| 6118255 |
Charging apparatus, secondary battery apparatus, charging system, and charging method |
September 12, 2000 |
| An over-charging voltage is supplied from a voltage detecting circuit 39 to a priority controlling circuit 46 and a switch circuit 43. A voltage detecting circuit 41 detects a terminal voltage of a secondary battery BT (namely, an over-charging voltage) and supplies the voltage to the |
| 6066939 |
Secondary battery pack |
May 23, 2000 |
| A secondary battery pack includes first and second terminal portions connected to a load device or a charging device, a secondary battery, a voltage detecting means for detecting a voltage applied to the secondary battery or a battery voltage of the secondary battery, a switch means |
| 6057609 |
Auxiliary power supply apparatus |
May 2, 2000 |
| The AC electric power of the commercial AC power supply is safely supplied to an electronic appliance functioning as a load during an occurrence of a power interruption by an auxiliary power supply apparatus. In the auxiliary power supply apparatus, normally usable electric power derived |
| 6028415 |
Charging control method and charging control device |
February 22, 2000 |
| A charging control method and apparatus for controlling the charging of a secondary battery includes a charging unit that outputs a constant voltage and constant current and a battery unit that includes a secondary battery. The charging unit has a constant voltage constant-current circui |
| 5991170 |
Equipment and method for transmitting electric power |
November 23, 1999 |
| In an electric power transmission device which transmits electric power between a primary coil and a secondary coil, a resonant frequency of the secondary coil side is arranged to become higher than a frequency of an oscillation signal of the primary coil side, so that a capacitance can |
| 5982153 |
Charger system switchably connects a smoothing capacitor and resistor and charging controller ba |
November 9, 1999 |
| A battery charging system detects a secondary battery terminal voltage and selectively controls a first switch to connect/disconnect a series-connected smoothing capacitor and resistor to ground to present an impedance greater than the battery impedance and further controls a second |
| 5982151 |
Battery charger and battery charging method |
November 9, 1999 |
| In a battery charger, current regulating means and voltage regulating means can be prevented from damages. In the case where a loss of current regulating means (11) or voltage regulating means (12) exceeds an allowable loss, pulse width modulating means (15, 16) for generating a puls |
| 5796238 |
Battery pack |
August 18, 1998 |
| A battery pack (1) is connected to an external circuit (9) and to a power source circuit (10) which is also connected to the external equipment (9). The battery pack (1) is discharged to supply the current to the external equipment (9) or is charged by the current supplied from the power |
| 5783322 |
Secondary battery pack |
July 21, 1998 |
| A secondary battery pack includes terminals connected to an external device, a rechargeable battery for storing and utilizing electric charges, a switching circuit for switching a state of the rechargeable battery between a charge state and a discharge state, a charge/discharge state |
| 5760570 |
Rechargeable battery apparatus |
June 2, 1998 |
| The invention provides a rechargeable battery apparatus wherein, when secondary batteries having different terminal voltages are used in parallel connection, a back current is prevented and a loss which is produced in a diode for prevention of back current is reduced. A plurality of |
| 5691620 |
Battery charging method |
November 25, 1997 |
| A voltage at the time of full charging of a battery being charged is set to be larger for a lithium ion battery than for a nickel cadmium battery. Charging of the battery is then carried out using a constant current circuit and a fixed voltage circuit. If the item being charged is a |
| 5680027 |
Battery pack including internal capacity monitor for monitoring groups of battery cells |
October 21, 1997 |
| A battery pack (1) is connected to an external equipment (9) and to a power source circuit (10) designed to supply the power to the external equipment (9). The communication of the information is made between a micro-computer (11) in the battery pack (1) and the external equipment (9) vi |
| 4393337 |
Switching circuit |
July 12, 1983 |
| First and second gate-controlled switches are connected analogously to a Darlington transistor pair with a slow-response diode connected to delay application of a turn-off signal to the second gate-controlled switch until the first gate-controlled switch is fully turned OFF. The Darl |
| 4390818 |
Television receiver |
June 28, 1983 |
| A television receiver having a horizontal output transistor includes a collector and an emitter respectively connected to a first potential and a second ground potential, a first series circuit of first and second damper diodes connected between the first potential and ground potential, |
| 4242714 |
Current control circuit |
December 30, 1980 |
| In a circuit for controlling the current flow through a coil, such as the horizontal deflection coil of a television receiver, a first switching device including, for example, a first switching transistor and a first damper diode is connected in parallel with a first resonant circuit |
| 4206388 |
Current control circuit for horizontal deflection coil of television receiver |
June 3, 1980 |
| In a circuit for controlling the current flow through a coil, such as, the horizontal deflection coil of a television receiver, a first switching circuit including a first switching transistor and a first damper diode is connected in parallel with a first resonant circuit including a fir |
| 4027200 |
High voltage generating circuit |
May 31, 1977 |
| A high voltage generating circuit for a television receiver including a flyback transformer having primary and secondary windings which are loosely coupled to achieve substantial operational isolation therebetween. The secondary winding has a diode rectifying circuit coupled thereto for |
