Abstract: A noise suppression circuit for use with a noise source connected to ground may include a first capacitor having a first terminal and a second terminal, the first terminal of the first capacitor being connected to the noise source; and a first impedance element having a first terminal and a second terminal, the first terminal of the first impedance element being connected to the second terminal of the first capacitor and the second terminal of the first impedance element being connected to the ground.

Abstract: A noise suppression circuit for use with a noise source connected to ground may include a first capacitor having a first terminal and a second terminal, the first terminal of the first capacitor being connected to the noise source; and a first impedance element having a first terminal and a second terminal, the first terminal of the first impedance element being connected to the second terminal of the first capacitor and the second terminal of the first impedance element being connected to the ground.

Abstract: An electric motor system and method are shown having a circuit board arranged in a plane that lies in a predetermined angle relative to an axis to an armature of the electric motor. In one embodiment the predetermined angle is an acute angle and the plane is not perpendicular to an axis of an armature of the motor 10. Brushes are located remotely from the board.

Abstract: The apparatus and method includes a panel movable between at least two positions. An electric motor has a rotating armature. A multiple pole magnet is mounted on the armature. A sensor detects the passage of each magnet pole and generates an output signal. A control measures time periods between each pole passage. An average time period is computed over a predetermined number of time periods. The difference between average time periods is computed and compared with a threshold difference to determine if an obstacle is present in the path of movement of the panel. Transient counts are accumulated for increasing average time periods over a number of time period samples as a measurement of the force exerted on an obstacle by the panel to detect an obstacle.

Abstract: A control apparatus and method for a panel movable between at least two positions by an electric motor having a rotatable armature. The control generates time periods for the rotation of the armature over a constant angular distance. An average time period is computed over a predetermined number of time periods and compared with a threshold time period to determine if an obstacle is present in the path of movement of the closure. Transient counts are accumulated for increasing average time periods over a number of time period samples to detect an obstacle. A compensation factor is used to adjust a threshold upon detecting a start-up transient during an initial movement of the motor armature coupled to the panel to delay activation of obstacle detection until the start-up transient diminishes.