A board a motor driver control circuit, a first connector, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, and a sixth wire. The motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector is a connector to which an output from the first H-bridge and an output from the second H-bridge are input. The first wire and the second wire input the output from the first H-bridge to the first connector. The third wire and the fourth wire input the output from the second H-bridge to the first connector. The fifth wire is connected to the first wire and outputs the first H-bridge output to another connector. The sixth wire is connected to the second wire and outputs the first H-bridge output to the other connector.

A board a motor driver control circuit, a first connector, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, and a sixth wire. The motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector is a connector to which an output from the first H-bridge and an output from the second H-bridge are input. The first wire and the second wire input the output from the first H-bridge to the first connector. The third wire and the fourth wire input the output from the second H-bridge to the first connector. The fifth wire is connected to the first wire and outputs the first H-bridge output to another connector. The sixth wire is connected to the second wire and outputs the first H-bridge output to the other connector.

A board a motor driver control circuit, a first connector, a first wire, a second wire, a third wire, a fourth wire, a fifth wire, and a sixth wire. The motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector is a connector to which an output from the first H-bridge and an output from the second H-bridge are input. The first wire and the second wire input the output from the first H-bridge to the first connector. The third wire and the fourth wire input the output from the second H-bridge to the first connector. The fifth wire is connected to the first wire and outputs the first H-bridge output to another connector. The sixth wire is connected to the second wire and outputs the first H-bridge output to the other connector.

A board includes a first motor driver control circuit, a first connector, and a second connector. The first motor driver control circuit includes a first H-bridge and a second H-bridge. The first connector includes at least the following: a first pin to which a first output of the first H-bridge is input, a second pin to which a second output of the first H-bridge is input, and a third pin. The second connector is disposed apart from the first connector and includes at least the following: a first pin to which a first output of the second H-bridge is input, a second pin to which a second output of the second H-bridge is input, and a third pin of the second connector.

A method for calibrating a position of a control valve within a gas valve assembly for controlling fuel flow to a combustion appliance. The method may include moving the control valve to a second end stop, moving the control valve from the second end stop to a first end stop while counting a number of steps traveled by a stepper motor driving the control valve, and comparing the counted number of steps traveled from the second end stop to the first end stop to a reference value stored in a memory of the controller. If the counted number of steps does not match the reference value, the gas valve assembly may be placed in a lockout mode.

A timepiece includes a stepping motor having a rotor and a coil, and a drive circuit that applies a first drive pulse having a stable stationary position at a rotor rotation angle of 90 degrees or less from a reference position and a second drive pulse having the stable stationary position at a rotor rotation angle of 90 degrees or more from the reference position, as a pulse for driving the rotor, to the coil. When a period during which the pulse is not applied to the coil is assumed as a waiting period, the drive circuit generates the waiting period after a first application of the second drive pulse after an application of the pulse to the coil is started and rotates the rotor by one or more turns without passing through the waiting period at at least one predetermined timing after the waiting period.

An example actuator control system includes a variable differential transformer (VDT) configured to measure displacement of a motor, and a motor controller configured to control the motor based on displacement data from the VDT. A circuit card assembly (CCA) interconnects the VDT to the motor controller. The CCA includes memory storing configuration data of the VDT, and the CCA is configured to provide the configuration data to the motor controller to calibrate the motor controller for use of the VDT. A method of configuring a motor controller is also disclosed.

An example actuator control system includes a variable differential transformer (VDT) configured to measure displacement of a motor, and a motor controller configured to control the motor based on displacement data from the VDT. A circuit card assembly (CCA) interconnects the VDT to the motor controller. The CCA includes memory storing configuration data of the VDT, and the CCA is configured to provide the configuration data to the motor controller to calibrate the motor controller for use of the VDT. A method of configuring a motor controller is also disclosed.

A motor is disclosed. The motor includes a first end bell, a second end bell and a stator with a stator coil disposed between the first end bell and the second end bell. A rotor with a rotor shaft is disposed relative to the stator, the rotor configured to rotate relative to the stator and the rotor shaft extending through the first end bell. The second end bell includes a chamber, the chamber includes an electronic circuit and a connector. The connector is electrically coupled to the electronic circuit and configured to receive both a control signal and a power signal from an external source.

Aspects of the invention provide methods and systems for moving a plurality of moveable stages relative to a stator. The stator comprises a plurality of coils shaped to provide pluralities of coil trace groups where each coil trace group comprises a corresponding plurality of generally linearly elongated coil traces which extend across a stator tile. Each moveable stage comprises a plurality of magnet arrays. Methods and apparatus are provided for moving the moveable stages relative to the stator, where a magnet array from a first moveable stage and a magnet array from a second moveable stage both overlap a shared group of coil traces. For at least a portion of the time that the magnet arrays from the first and second moveable stages overlap the shared group of coil traces, currents are controllably driven in the shared coil trace group based on the positions of both the first and second moveable stages. The positions of the first and second moveable stages may be ascertained by feedback.