Insulated switch power supply apparatus

Insulated switch power supply apparatus

  • CN 101,789,698 A
  • Filed: 01/27/2010
  • Published: 07/28/2010
  • Est. Priority Date: 01/27/2009
  • Status: Active Grant
First Claim
Patent Images

1. insulated switch power supply apparatus has:

  • Main transformer, it has 1 coil and 2 coils, from primary side to the primary side delivering power;

    At least one power switch, 1 coil of itself and above-mentioned main transformer is connected in series, to carrying out intermittently to the electric current that 1 coil of above-mentioned main transformer flows from direct-current input power supplying;

    Rectification circuit, the voltage that produces in its 2 coils to above-mentioned main transformer carries out rectification;

    Smoothing circuit, it carries out smoothly the voltage by above-mentioned rectification circuit rectification;

    WithVoltage clamp circuit, it has the clamp switch that is switched on/is disconnected control by the clamp switch drive signal, and the surge voltage that is produced when being absorbed in the voltage reversal that puts on above-mentioned main transformer will put on the voltage clamp of above-mentioned main transformer to the set upper limit value;

    ON-OFF control circuit, the 2nd lead-out terminal that its driving with the above-mentioned power switch of output is used signal with the 1st lead-out terminal and the driving of output clamp switch of signal;

    The 1st pulse transformer, 1 coil wherein is connected with above-mentioned the 2nd lead-out terminal, and 2 times coil is connected with the clamp switch drive circuit that above-mentioned clamp switch is driven, and transmits the margin signal of impulse wave;

    WithThe clamp switch drive circuit, its edge that will drive the usefulness signal from the above-mentioned clamp switch of above-mentioned the 1st pulse transformer output produces above-mentioned clamp switch drive signal as triggering.

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