Patent ID: 6300747
Filing Date: 2001-10-09
Classification: H02M

Abstract:
In a circuit for controlling electric power, comprising an electric source (1), a load (2) connected to said source, and at least one device (3) for controlling electric power delivered by the source to the load (2), the improvement wherein said at least one device (3) for controlling the electric power delivered to the load comprises at least one transformer (10, 10') having a secondary side (10, 10') connected in said circuit between the load and the source (1), and a primary side (10, 10') connected to a control device (11), which produces a voltage or a current, respectively, at predetermined points of time and for predetermined periods of time at the primary side of the transformer so as to induce at the secondary side of said at least one transformer (10, 10') a counter voltage or current in said circuit, respectively, of identical amplitude as the voltage or current, respectively, of the source (1) such that the electric power resulting at the load (2) is substantially zero and substantially without power loss.