Patent ID: 9048835
Filing Date: 2015-06-02
Classification: H02M,H03K,Y02B

Abstract:
1. A power supply comprising: a transformer including a primary winding and a secondary winding; a switching element connected to the secondary winding of the transformer and configured to perform a switch according to a voltage generated in the secondary winding of the transformer; a first current-voltage conversion unit configured to convert a current on a secondary winding connected-side of the switching element to a first voltage; a second current-voltage conversion unit configured to convert a current on a voltage-output side of the switching element to a second voltage; a comparator configured to compare the first voltage and the second voltage; a switching off unit configured to turn off the switching element in response to a signal from the comparator; and a state holding unit configured to hold an off state of the switching element and connected to the voltage-output side of the switching element and the switching off unit.