The piezoelectric cooling control apparatus of claim 1, wherein the temperature sensing unit senses the temperature of the heating unit either at preset periods or in response to occurrence of a preset event.ģ. A piezoelectric cooling control apparatus, comprising: a temperature sensing unit for sensing temperature of a heating unit of a cooling target device a determination unit for determining whether to activate piezoelectric cooling, based on the temperature of the heating unit sensed by the temperature sensing unit and a temperature setting range a setting unit for, if it is determined by the determination unit to activate piezoelectric cooling, setting pulse parameters based on the temperature setting range and the temperature of the heating unit a pulse control unit for generating a Pulse Width Modulation (PWM) waveform based on the set pulse parameters and outputting the PWM waveform and a piezoelectric cooling unit for performing piezoelectric cooling based on the output PWM waveform.Ģ. Radially Balanced Stator Forces for a Spindle MotorĪUTOMATIC REVERSIBLE SYNCHRONIZING SWITCHING CIRCUITġ. Method of Sensing Speed of Electric Motors and Generators TORQUE CONTROL METHOD FOR AN ELECTRIC MOTOR Stepping motor control circuit and analog electronic watch METHOD AND APPARATUS FOR LIMITING A POWER CONSUMPTION OF AN ELECTRIC MOTOR IN THE EVENT OF OVERLOAD IN A HANDHELD POWER TOOLĪBNORMALITY DETECTING DEVICE OF POWER TRANSMITTING MEANS, MOLDING APPARATUS, AND ABNORMALITY DETECTING METHOD OF POWER TRANSMITTING MEANS Circuit for providing power to multiple electrical devicesĪpparatus for controlling speed of fan motor of air-conditionerīRUSHLESS MOTOR CONTROL DEVICE AND BRUSHLESS MOTOR CONTROL METHOD