Current detection device, method of detecting electric current and power supply system using the same

A current detection device comprising:

• an electric conductor placed in a plane and having first, second and third conductor components extending from a common diverging point in three orientations with a given angle with respect to one another;
• first and second magnet-electric transducer elements located at both sides of the first conductor component in positions equally spaced from the first conductor component and in the vicinity of the diverging point for producing first and second electric signals in response to magnetic fluxes caused by electric currents flowing through the first, second and third conductor components, with each transducer element having a flux sensitive surface aligned in the plane of the electric conductor;
• and
• a calculation processor circuit responsive to a differential value between the first and second electric signals for thereby detecting electric current flowing through the first conductor component.