×

Power supplying apparatus having a detectable useful life

  • US 9,197,123 B2
  • Filed: 05/03/2013
  • Issued: 11/24/2015
  • Est. Priority Date: 12/07/2012
  • Status: Expired due to Fees
First Claim
Patent Images

1. A power supplying apparatus comprising:

  • a power supply unit switching input power of a primary side to convert the input power into preset direct current (DC) power;

    a detecting unit setting a reference voltage based on the DC power of the power supply unit and comparing the reference voltage with a ripple voltage included in the DC power to detect a voltage level of the ripple voltage in a secondary side insulated from the primary side; and

    a controlling unit determining whether an abnormality has occurred according to a detection result of the detecting unit,wherein the detecting unit includes;

    a dividing resistor group dividing a voltage level of the DC power according to a preset resistance ratio;

    first and second diodes transferring respective voltage levels divided by the dividing resistor group to different paths;

    a first capacitor stabilizing the voltage level from the first diode; and

    a comparator comparing the voltage level from the second diode input to a negative terminal thereof and the voltage level from the first diode input to a positive terminal thereof.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×