Patent ID: 7732946
Filing Date: 2010-06-08
Classification: F02D,H02N

Abstract:
1. A current source, comprising: a first switching element having a control input and being configured and connected to set, in dependence on a control signal at said control input, an output current at an output side of the current source; a reference resistance electrically connected to said first switching element for conducting therethrough the output current, said reference resistance including: a controller receiving a predetermined reference potential as a setpoint value and outputting a corrective signal forming the control signal of said first switching element; a second switching element configured and connected to apply to said controller a first potential difference as an actual value representative of a voltage drop across said first and said second individual reference resistance, in a first switching position, and a second potential difference as an actual value representative of a voltage drop across said second individual reference resistance, in a second switching position.