There is the piezoelectric transducer of primary adjusting means and corresponding piezoelectric transformer

There is the piezoelectric transducer of primary adjusting means and corresponding piezoelectric transformer

  • CN 101,681,992 B
  • Filed: 06/09/2008
  • Issued: 03/08/2017
  • Est. Priority Date: 06/11/2007
  • Status: Active Grant
First Claim
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1. a kind of Switching Power Supply for providing the output voltage adjusting from input voltage, including:

  • Piezoelectric transformer, including being connected to the primary side electrode of primary side voltage, be connected to the secondary lateral electrode of secondary-side voltage,And auxiliary electrode, for producing the voltage of the auxiliary electrode proportional to secondary-side voltage, this auxiliary electrode (106) passes through at leastTwo plane electrodes positioned opposite to each other are formed;

    Including the switch of the first terminal, Second terminal and third terminal, wherein said switch is via the first terminal and Second terminalIt is coupled to primary side electrode, but described switch is directly coupled to primary side electrode not via the third terminal of switch;

    It is derived from the commutator of the output voltage of secondary-side voltage for rectification;

    WithThe actuator being directly connected to switch and being connected to the voltage of auxiliary electrode, the voltage of wherein auxiliary electrode includes being transferred toThe regulated quantity signal of this actuator, as the regulation parameter of the output voltage for adjusting described Switching Power Supply, thus actuatorControl signal is exported switch, with controlling switch, described output voltage is conditioned according to described regulated quantity signal, andWherein, described control signal is received by switch in the case of the feedback not coming from primary side electrode.

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