Patent ID: 6906486

Claim:
An electronically commutated motor which comprises a rotor; a stator having a stator winding arrangement, an H-bridge circuit for controlling the current in the stator winding arrangement, in the H-bridge circuit, first FET transistors being connected to a first DC supply lead, and second FET transistors being connected to a second DC supply lead; further, an arrangement for monitoring the current flowing from the first DC supply lead to at least one of the second FET transistors, which arrangement is configured to respond when a predetermined current is exceeded, to control at least one FET transistor connected to the second DC supply lead from its conductive into its nonconductive state, and to control, at least during a predetermined time period (t 33 -t 32 ), both said second FET transistors into their conductive states, thereby allowing the current in the stator winding arrangement to decay through both said second FET transistors during said predetermined time period.