Patents Assigned to Delta Electronics
  • PARALLEL-CONNECTED RESONANT CONVERTER CIRCUIT AND CONTROLLING METHOD THEREOF
    Publication number: 20090231887
    Abstract: The configurations of a parallel-connected resonant converter circuit and a controlling method thereof are provided in the present invention. The proposed circuit includes a plurality of resonant converters, each of which has two input terminals and two output terminals, wherein all the two input terminals of the plurality of resonant converters are electrically series-connected, and all the two output terminals of the plurality of resonant converters are electrically parallel-connected.
    Type: Application
    Filed: February 27, 2009
    Publication date: September 17, 2009
    Applicant: Delta Electronics, Inc.
    Inventors: Haoyi Ye, Jianhong Zeng, Hongyang Wu, Chao Yan, Teng Liu, Jianping Ying
  • BRIDGELESS PFC CIRCUIT FOR CRM AND CONTROLLING METHOD THEREOF
    Publication number: 20090230929
    Abstract: The configurations of a bridgeless PFC circuit system and a controlling method thereof are provided. The proposed system includes a bridgeless PFC circuit having a first and a second input terminals, a first switch having a first terminal, a first inductor having a first terminal coupled to the first input terminal and a second terminal coupled to the first terminal of the first switch, and a second inductor having a first terminal coupled to the second input terminal, a first auxiliary winding coupled to the first inductor and generating a first sensing signal, and a second auxiliary winding coupled to the second inductor and generating a second sensing signal, wherein the first and the second sensing signals are used to generate an inductor current sensing signal controlling the switching of the first switch accordingly.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 17, 2009
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Lubo Sui, Hongyuan Jin, Hongjian Gan
  • Power supply apparatus
    Patent number: 7589964
    Abstract: A power supply apparatus for use with a redundant power supply system includes a casing, a main circuit board and an airflow driving device. The casing includes a first airflow opening and a second airflow opening. The main circuit board is disposed within the casing and includes plural electronic components thereon. The airflow driving device is disposed in the middle region of the main circuit board. A cooling air is pumped by the airflow driving device to be introduced into the inner portion of the casing through one of the first airflow opening and the second airflow opening, then the heat generated from the electronic components is removed by the cooling air, and finally a heated air is exhausted through the other one of the first airflow opening and the second airflow opening.
    Type: Grant
    Filed: July 11, 2007
    Date of Patent: September 15, 2009
    Assignee: Delta Electronics (Thailand) Public Co., Ltd.
    Inventors: Ran Li, Chanwit Prasantnakorn, Chin-Huat Lim
  • Assembled structure of power semiconductor device and heat sink
    Patent number: 7589970
    Abstract: An assembled structure includes a power semiconductor device, a first insulating member, a heat sink and a fastening element. The power semiconductor device has a first perforation. The first insulating member includes a first opening and a second opening corresponding to the first perforation and a receiving portion between the first opening and a second opening. The fastening element includes a head portion and a body portion. The body portion is penetrated through the first opening, the receiving portion, the second opening and the first perforation such that the power semiconductor device is fastened onto the heat sink. The head portion is received in the receiving portion so as to isolate the head portion of the fastening element from adjacent electronic components.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 15, 2009
    Assignee: Delta Electronics, Inc.
    Inventor: Hung-Chang Hsieh
  • Synchronous rectifier forward converter with reverse current suppressor
    Patent number: 7589982
    Abstract: Disclosed is a synchronous forward converter having a reverse current suppressor connected to the gate of a freewheel switch. The reverse current suppressor is configured to receive a control input signal generated by an internal circuitry of a power supply system where the forward converter locates, such as an enable signal, to detect the power-off of the forward converter, and in response thereto turn off the freewheel switch during the interruption of the input power of the forward converter. Alternatively, the reverse current suppressor is configured to detect the decay of the input voltage across the input bulk capacitor located on the primary side of a transformer of the forward converter, and turn off the freewheel switch when the voltage across the secondary side of the transformer is decayed to be smaller than the output voltage of the forward converter.
    Type: Grant
    Filed: January 25, 2007
    Date of Patent: September 15, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Kuan-Sheng Wang, Tian-Hua Liu
  • Composite fan and frame thereof
    Patent number: 7585150
    Abstract: A composite fan frame includes a first frame and a second frame. The first frame has a first surface formed with at least one first protrusion portion. The second frame has a second surface formed with at least one first recess portion. When the first surface touches the second surface, the first protrusion portion is inserted into the first recess portion along a predetermined sliding direction such that the first frame and the second frame are combined. Also, a composite fan having the composite fan frame is disclosed.
    Type: Grant
    Filed: March 9, 2006
    Date of Patent: September 8, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Shuo-Shiu Hsu, Shun-Chen Chang, Wen-Shi Huang, Li-Chen Lin
  • Inverter system and detecting device thereof
    Patent number: 7586267
    Abstract: A detecting device of an inverter system comprises at least one detecting element and at least one comparative unit. The detecting element is electrically connected to any one of the connecting parts of the inverter system to get a voltage signal. The comparative unit generates a control signal to shut the inverter system down when the voltage signal is higher than a reference signal.
    Type: Grant
    Filed: December 18, 2006
    Date of Patent: September 8, 2009
    Assignee: Delta Electronics Inc.
    Inventor: Tai-Sheng Po
  • Heat dissipation module
    Patent number: 7586742
    Abstract: A heat dissipation module includes a first heat dissipation apparatus, a second heat dissipation apparatus, at least one first flapper and at least one second flapper. The first heat dissipation apparatus has a first airflow passage, and the second heat dissipation apparatus has a second airflow passage. The first flappers and the second flappers are separately disposed within the first airflow passage and the second airflow passage. The first flappers and the second flappers are moved to an open position due to force generated by air flowing through the first airflow passage and the second airflow passage, and are moved to a closed position after the force is removed.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: September 8, 2009
    Assignee: Delta Electronics Inc.
    Inventors: Yung-Yu Chiu, Te-Tsai Chuang, Kuo-Cheng Lin, Wen-Shi Huang
  • Centrifugal fan and impeller thereof
    Patent number: 7585154
    Abstract: An impeller applied to a centrifugal fan includes a base plate, a hub and a plurality of first blades. The hub is connected to the base plate and the first blades are disposed on the base plate with respect to the hub as a center. Furthermore, the hub has a plurality of second blades disposed around its outer wall to enhance its performance. A centrifugal fan including the impeller is also disclosed.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: September 8, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Chung-Kai Lan, Huan-Chi Chen, Te-Tsai Chung, Wen-Shi Huang
  • Fan, motor and stator structure thereof
    Patent number: 7579726
    Abstract: A stator structure of a motor includes a first magnetic substrate, a second magnetic substrate and a plurality of coil units. An outer profile of the first magnetic substrate has a plurality of first protruding parts, and an outer profile of the second magnetic substrate has a plurality of second protruding parts. The first magnetic substrate and the second magnetic substrate are correspondingly disposed. The coil units disposed between the first magnetic substrate and the second magnetic substrate respectively have a coil wound around a central axis of the coil unit, and at least one magnetically conductive element disposed within the coil.
    Type: Grant
    Filed: February 28, 2006
    Date of Patent: August 25, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Lee-Long Chen, Shih-Wei Huang, Shih-Ming Huang, Wen-Shi Huang
  • Lamp assembly of a projection apparatus
    Patent number: 7572032
    Abstract: A lamp assembly of a projection apparatus which has a function of adjusting the position of the lamp device is disclosed. The lamp assembly includes an outer housing, a lamp module, a transversely adjustable device and a vertically adjustable device. The lamp module is detachably disposed in the outer housing with the transversely and vertically adjustable devices disposed on the outer housing. When the lamp module is located within the outer housing, the lamp module can be adjusted by operating the transversely and vertically adjustable devices.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: August 11, 2009
    Assignee: Delta Electronics, Inc.
    Inventor: Chang-Hsing Lu
  • Motor driving method and device thereof
    Patent number: 7573213
    Abstract: The invention provides a motor driving device including a converter receiving and converting a non-electrical power source, such as light, heat, mechanical or chemical energy, to a first electrical power, and a selector electrically connected between the converter and a motor, for receiving the first electrical power and a second electrical power from a power source, such as an electrical power generator, and outputting the first or second electrical power according to a rotation speed of the motor.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 11, 2009
    Assignee: Delta Electronics Inc.
    Inventors: Chun-Lung Chiu, Ming-Shi Tsai, Wen-Shi Huang
  • Guide mechanism and optical drive utilizing the same
    Patent number: 7574716
    Abstract: A guide mechanism and the optical drive utilizing the same. The guide mechanism includes a guiding base, a first axial fixing member, a driver, and a rotary structure. The guiding base comprises a first opening and a second opening. The first axial fixing member is disposed at a side of the guiding base. The driver, disposed at an opposite side of the guiding base, comprises an opening and a second axial fixing member. The rotary structure is fixed between the first axial fixing member and the second axial fixing member, comprising a spindle and a magnetic structure. The spindle comprises an operating region and a connecting portion having a maximum outer diameter smaller than a minimum outer diameter of the operating region. The magnetic structure is attached to the connecting portion and disposed in the opening.
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: August 11, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Chun-Hua Yang, Kuo-Tung Hsu
  • FAN AND MOTOR
    Publication number: 20090196773
    Abstract: A foreign-body-proof or water-proof fan includes an impeller and a motor. The motor includes a rotor, a stator, a housing, at least one bearing and a spacer. The rotor has a shaft. The stator is disposed corresponding to the rotor. The housing supports for the stator and the rotor and has an axial hole, and the shaft passes through the axial hole. One end of the shaft protrudes out of the housing and is connected to the impeller. The bearing for supporting the shaft is disposed in the axial hole and securely disposed in the axial hole. The spacer loops the shaft and urges against the bearing.
    Type: Application
    Filed: September 12, 2008
    Publication date: August 6, 2009
    Applicant: DELTA ELECTRONICS, INC
    Inventors: Chen-Mo JIANG, Hung-Chi CHEN, Te-Tsai CHUANG, Kuo-Cheng LIN
  • COLOR SWITCHING DEVICE
    Publication number: 20090195714
    Abstract: A liquid crystal color switching device for use in a non-polarization projection device is disclosed. The color switching device comprises a PBS and two switchable phase retarder assemblies, respectively disposed at two outlets of the PBS, wherein each of the switchable phase retarder assemblies comprises at least one liquid crystal layer and at least one dichroic coating layer. When a white light with S- and P-polarizations enters the inlet of the PBS, the white light will be divided into two orthogonal polarized lights and emitted from two outlets of the PBS. After being modulated respectively by the switchable phase retarder assemblies of the two outlets, the two switched polarized lights will be combined by the PBS into a non-polarized light and be emitted from a third outlet of the PBS.
    Type: Application
    Filed: January 22, 2009
    Publication date: August 6, 2009
    Applicant: DELTA ELECTRONICS, INC.
    Inventor: June-Jei HUANG
  • POWER SUPPLY CIRCUIT WITH CURRENT SHARING FOR DRIVING MULTIPLE SETS OF DC LOADS
    Publication number: 20090195169
    Abstract: The present invention provides a power supply circuit for driving multiple sets of DC loads. The power supply circuit includes a current providing circuit, a sharing circuit and a current control unit. The current providing circuit receives and regulates a supply voltage into specified output currents to be supplied to the multiple sets of DC loads. The sharing circuit is connected in series with output terminals of the current providing circuit and the multiple sets of DC loads. The sharing circuit includes at least one coupling inductor member for performing equal current sharing among the multiple sets of DC loads. The current control unit is connected to the current providing circuit and the multiple sets of DC loads for detecting magnitudes of the current passing through the multiple sets of DC loads and controlling the output currents from the current providing circuit.
    Type: Application
    Filed: September 23, 2008
    Publication date: August 6, 2009
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chung-Tsai Huang, Shang-Jin Yan, Ching-Chi Cheng, Po-Yi Lee
  • FAN AND IMPELLER THEREOF
    Publication number: 20090196744
    Abstract: A fan includes a frame, a motor and an impeller. The motor is disposed on the frame and coupled to the impeller to drive the impeller to rotate. The impeller includes a hub, a plurality of blades and an air exhausting structure. The hub has an opening formed on a top portion of the hub. The blades are disposed around the hub. The air exhausting structure is disposed in the opening for discharging hot airs generated by the motor out of the hub.
    Type: Application
    Filed: September 12, 2008
    Publication date: August 6, 2009
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Po-Hao YU, Chen-Min Wang
  • Assembly structure of electronic element and heat sink
    Patent number: 7569928
    Abstract: An assembly structure of an electronic element and a heat sink is disclosed. An assembly structure of an electronic element and a heat sink comprises a fastening element, an electronic element having a first through hole, and an insulating piece having a second through hole, an insulating element disposed in the first through hole of the electronic element and having a channel therein, and a heat sink. The second through hole is disposed correspondingly to the first through hole of the electronic element, the electronic element and the insulating piece are secured on the heat sink by inserting the fastening element through the channel of the insulating element, so as to insulate the electronic element from the heat sink by the insulating element.
    Type: Grant
    Filed: November 23, 2005
    Date of Patent: August 4, 2009
    Assignee: Delta Electronics, Inc.
    Inventor: Chien-Hua Huang
  • Connector and housing thereof
    Patent number: 7568941
    Abstract: A connector and the housing thereof, which is equipped with at least one light emitting element having at least one lead, are disclosed. The connector includes at least one connecting base, at least one light emitting element, and a housing. The housing covers at least a portion of the connecting base and has a body and at least one fastening structure. The light emitting element is accommodated in the body, and the fastening structure is connected with the body and fastens the lead of the light emitting element so as to connect and fix the light emitting element with the body.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: August 4, 2009
    Assignee: Delta Electronics, Inc.
    Inventors: Yu-Yuan Tai, Yun Zuo
  • Heat dissipating module
    Patent number: D597497
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: August 4, 2009
    Assignee: Delta Electronics Inc.
    Inventors: Chin-Ming Chen, Yu-Hung Huang, Chun-Yang Hung, Sung-Ching Ho