Switch power source device

Switch power source device

  • CN 100,533,934 C
  • Filed: 12/09/2003
  • Issued: 08/26/2009
  • Est. Priority Date: 12/09/2002
  • Status: Active Grant
First Claim
Patent Images

1. a switching power unit is the switching power unit of kicker coil converter mode,The holding circuit of the starting voltage that the maintenance relevant with starting circuit obtain with described starting circuit is set,It is characterized in that,The time constant of described holding circuit is set like this, makes the voltage that keeps in holding circuit described in the unit interval of switch periods be similar to necessarily, wherein,The formation of described holding circuit comprises:

  • With the start capapcitor of the current charges of described starting circuit,Limit described start capapcitor charging and discharging currents current-limiting resistance, andTake out the charging voltage of described start capapcitor and supply with the preventing to flow backwards and use diode of control terminal of main switch element from the tie point of described current-limiting resistance and starting circuit.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×