Patent ID: 8106614

Claim:
An electric motor circuit for controlling an electric motor of a minor adjustment mechanism comprising: a circuit including a current sensor, a current branch, and an electronic switch; wherein the circuit is configured to drive an electric motor and for switching off said electric motor when an electrical supply current is greater than a predetermined critical level; wherein the current sensor is configured to measure an electrical supply current and, depending thereon, generating a voltage; wherein the current branch is configured to be rendered conductive in response to the generated voltage; wherein the electronic switch is configured to interrupt the supply current as a result of the current branch being rendered conductive; and wherein the current branch forms a first branch of a current mirror which is out of balance and is dimensioned such that the first branch under normal operating conditions of said motor does not carry current and a second branch is conductive, and that upon the occurrence of a supply current that is greater than the predetermined critical level, the first branch is also rendered conductive.