A servo amplifier selection device includes: an amplifier group allocation section configured to allocate each of a plurality of motors to any one of a plurality of amplifier groups based on an amplifier group number; a total rated output calculation section configured to calculate, for each of the plurality of amplifier groups, a total value of rated outputs of the motors allocated to the amplifier group; a common power source selection section configured to, for each of a plurality of common power sources, selects the common power source that has a magnitude of the power source capacity satisfies a condition of being equal to or greater than the total value of each of the plurality of amplifier groups; and a display control section configured to get the selected common power source to be displayed in a display unit for each of the plurality of amplifier groups.

A servo amplifier selection device includes: an amplifier group allocation section configured to allocate each of a plurality of motors to any one of a plurality of amplifier groups based on an amplifier group number; a total rated output calculation section configured to calculate, for each of the plurality of amplifier groups, a total value of rated outputs of the motors allocated to the amplifier group; a common power source selection section configured to, for each of a plurality of common power sources, selects the common power source that has a magnitude of the power source capacity satisfies a condition of being equal to or greater than the total value of each of the plurality of amplifier groups; and a display control section configured to get the selected common power source to be displayed in a display unit for each of the plurality of amplifier groups.

In an embodiment, an apparatus includes a radio frequency (RF) generator that is to generate a RF signal, first and second electrodes, and an impedance match module in series between the RF generator and the first electrode. The RF generator detects reflected power from the RF signal applied to a load electrically coupled between the first and second electrodes to change a temperature of the load, the RF signal to be applied to the load until the reflected power reaches a particular value.

In an embodiment, an apparatus includes a radio frequency (RF) generator that is to generate a RF signal, first and second electrodes, and an impedance match module in series between the RF generator and the first electrode. The RF generator detects reflected power from the RF signal applied to a load electrically coupled between the first and second electrodes to change a temperature of the load, the RF signal to be applied to the load until the reflected power reaches a particular value.

In an embodiment, an apparatus includes a radio frequency (RF) generator that is to generate a RF signal, first and second electrodes, and an impedance match module in series between the RF generator and the first electrode. The RF generator detects reflected power from the RF signal applied to a load electrically coupled between the first and second electrodes to change a temperature of the load, the RF signal to be applied to the load until the reflected power reaches a particular value.

In an embodiment, an apparatus includes a radio frequency (RF) generator that is to generate a RF signal, first and second electrodes, and an impedance match module in series between the RF generator and the first electrode. The RF generator detects reflected power from the RF signal applied to a load electrically coupled between the first and second electrodes to change a temperature of the load, the RF signal to be applied to the load until the reflected power reaches a particular value.

An electronic timepiece enables driving a motor in a reverse direction. The electronic timepiece has a current detector that detects a current value flowing through a coil; a driver controller that outputs, according to the current value the current detector detected, a first drive signal causing the rotor to turn in a forward direction to a position not pulled to the second statically stable position from a position where the rotor is pulled to the first statically stable position, output, according to the current value the current detector detected, a second drive signal causing the rotor to turn in a reverse direction, which is opposite the forward direction, past the dynamically stable position after outputting the first drive signal, and output, according to the current value the current detector detected, a third drive signal causing the rotor to turn in the reverse direction after outputting the second drive signal; and a driver that is controlled, according to the first drive signal, the second drive signal, and the third drive signal, to an on state supplying drive current to the coil and an off state not supplying drive current to the coil.

An electronic timepiece enables driving a motor in a reverse direction. The electronic timepiece has a current detector that detects a current value flowing through a coil; a driver controller that outputs, according to the current value the current detector detected, a first drive signal causing the rotor to turn in a forward direction to a position not pulled to the second statically stable position from a position where the rotor is pulled to the first statically stable position, output, according to the current value the current detector detected, a second drive signal causing the rotor to turn in a reverse direction, which is opposite the forward direction, past the dynamically stable position after outputting the first drive signal, and output, according to the current value the current detector detected, a third drive signal causing the rotor to turn in the reverse direction after outputting the second drive signal; and a driver that is controlled, according to the first drive signal, the second drive signal, and the third drive signal, to an on state supplying drive current to the coil and an off state not supplying drive current to the coil.

A positioning drive has a first stepper drive unit having a first stepper drive controller and a first stepper motor, and a second stepper drive unit having a second stepper drive controller and a second stepper drive. The two stepper drives and the power take-off element are force-coupled and drive-coupled by a mechanical coupling unit. A central unit controls the two stepper drive controllers by a control signal, in each instance. The control signals predetermine the stator reference field angle and the rotor reference field angle set by the stepper drive controller. The central unit has an overriding regulator for the position of the power take-off element, and a subordinate regulator for setting a tensioning moment for each stepper motor. The tensioning moments occur by setting a load actual angle at the stepper drive.

A positioning drive has a first stepper drive unit having a first stepper drive controller and a first stepper motor, and a second stepper drive unit having a second stepper drive controller and a second stepper drive. The two stepper drives and the power take-off element are force-coupled and drive-coupled by a mechanical coupling unit. A central unit controls the two stepper drive controllers by a control signal, in each instance. The control signals predetermine the stator reference field angle and the rotor reference field angle set by the stepper drive controller. The central unit has an overriding regulator for the position of the power take-off element, and a subordinate regulator for setting a tensioning moment for each stepper motor. The tensioning moments occur by setting a load actual angle at the stepper drive.