Switching Power Supply Free Patent Search

  • Switching power supply circuit

    Switching Power Supply Abstract A transformer has a primary winding and a secondary winding. A center tap of the primary winding is connected with one end of a d.c. power supply. Both ends of the primary winding are connected to the drains of transis...

  • Switching power supply capable of ac to dc conversion

    Switching Power Supply Abstract A switching power supply capable of translating a.c. voltage of sinusoidal waveform into d.c. voltage, having a rectifier circuit connected to a pair of a.c. input terminals for rectifying the incoming commercial a.c....

  • Switching power supply for generating a ringing voltage

    Switching Power Supply Abstract An apparatus and method for providing a ringing voltage to a communication device such as a telephone or a modem. Typically, communication devices are coupled to a ringing voltage providing telephone network, such as a...

  • Switching power supply

    Switching Power Supply Abstract The switching power supply comprises a main circuit having a switching circuit for converting a DC input voltage to an AC voltage and an output circuit for rectifying the AC voltage to generate a DC output voltage, a c...

  • Switching power supply

    Switching Power Supply Abstract A switching power supply which feeds energy stored in a choke coil 7 to a load 11 through a freewheeling element when a switching element 2 turns off. The switching power supply includes a freewheeling MOSFET 6 serving...

  • Switching power supply

    Switching Power Supply Abstract A switching power supply includes a noise filter; a bridge rectifying circuit; a smoothing capacitor; a primary winding of a transformer and a switching element; and a control circuit for controlling the switching elem...

  • Frequency modulated self-oscillating switching power supply

    Switching Power Supply Abstract A switching power supply that can operate in critical conduction mode as self-oscillating power supply (SOP) during moderate load, and in discontinuous conduction mode (DCM) under the control of a pulse-width modulated...

  • Switching power supply circuit

    Switching Power Supply Abstract A circuit that includes a combination of a current resonance type converter of a switching frequency controlling system with a partial-voltage resonance circuit is configured such that, in order to improve the power fa...

  • Switching power supply unit

    Switching Power Supply Abstract A switching power supply unit includes a first switching control circuit, which has a first ON-time control circuit, and a second switching control circuit, which has a second ON-time control terminal. The first ON-tim...

  • Switching power supply circuit

    Switching Power Supply Abstract In a complex resonance type switching power supply circuit including: a series resonant circuit formed by a leakage inductance component having a primary-side winding of an isolation converter transformer driven by swi...

  • Switching power supply

    Switching Power Supply Abstract A DC--DC conversion switching power supply is provided, including a plurality of DC--DC converters connected in parallel. A three-times frequency waveform which is generated from a three-times frequency waveform genera...

  • Low-loss magnetic powder core, and switching power supply, active filter, filter, and amplifying devi

    Switching Power Supply Abstract A magnetic powder core comprises a molded article of a mixture of a glassy alloy powder and an insulating material. The glassy alloy comprises Fe and at least one element selected from Al, P, C, Si, and B, and has a te...

  • Switching power-supply module

    Switching Power Supply Abstract A switching power-supply module includes a coil pattern of a transformer or an inductor disposed on a substrate. A portion of the coil pattern projects into an edge portion of the substrate. A plurality of terminals ar...

  • Switching power supply with overcurrent protection

    Switching Power Supply Abstract A switching power supply with overcurrent protection is provided that comprises a current detection resistor (8) for detecting electric current through an FET (5); a capacitor (11) for accumulating electric charge in r...

  • Switching power supply using a transformer, rectifier, control circuit and voltage generating circuit

    Switching Power Supply Abstract A switching power supply which can prevent the output voltage Vout from fluctuating or undershooting when the instruction for stopping the operation is issued is disclosed. A switching power supply according to the pre...

  • Switching power supply circuit

    Switching Power Supply Abstract A switching power supply circuit is protected from degradation and breakage of a MOS transistor when the inductive load is short-circuited or overloaded. To do this, the magnitude of the load current flowing through th...

  • Switching power supply control circuit and switching power supply using same

    Switching Power Supply Abstract This invention provides a switching power supply control circuit that can switch the output voltage with high precision and at high speed. The control circuit comprises an A/D converter 31 that generates a output volta...