Patent ID: 8295021
Filing Date: 2012-10-23
Classification: G01R,H02H,H03K

Abstract:
1. An overcurrent protection apparatus for protecting a load circuit from an overcurrent, the load circuit including a power source, a load and a first semiconductor element (T 1 ) disposed between the power source and the load, a first main electrode of the first semiconductor element (T 1 ) being coupled to a positive electrode of the power source and a second main electrode of the first semiconductor element (T 1 ) being coupled to a negative electrode of the power source via the load, the overcurrent protection apparatus comprising: an amplifying section (AMP a first resistor (R a second resistor (R a third resistor (R a second semiconductor element (T a first current source (IA) which is disposed between the point a and a ground, wherein in a case where a current flows through the load and a voltage at the point a becomes lower than a voltage (V