Kinpo Electronics, Inc.

Cal-Comp Electronics & Communications Company Limited

Xyzprinting, Inc.

Ju-Chou Chen

Chih-Ming Chang

A heating control apparatus and a control method thereof are provided. The heating control apparatus includes a heating module, a temperature sensing module, a pulse width modulation circuit, and a comparator. Input terminals of the comparator are respectively coupled to the temperature sensing module and the pulse width modulation circuit, and an output terminal of the comparator is coupled to the heating module. In the control method, a heating temperature of the heating module is sensed by the temperature sensing module, so as to provide a temperature sensing signal. The comparator receives the temperature sensing signal and a pulse width modulation signal generated by the pulse width modulation circuit and compares the temperature sensing signal and the pulse width modulation signal to generate a comparing pulse width modulation signal, so as to control the heating temperature of the heating module by using the comparing pulse width modulation signal.

Heating control apparatus and control method thereof

An over-current protection device for multiple high-voltage motive devices is provided. The over-current protection device includes a comparison module and a logic operation module. The comparison module receives a plurality of voltages generated from a plurality of operating currents of a plurality of high-voltage motive devices and respectively compares the voltages with at least one reference voltage to generate a plurality of comparison results, wherein the high-voltage motive devices are solenoids, electronic clutches, or a combination of solenoids and electronic clutches. The logic operation module receives the comparison results and generates at least one control signal for a plurality of high-voltage motive device driving circuits according to the comparison results. The high-voltage motive device driving circuits respectively drive the high-voltage motive devices according to the control signal.

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Taipei, Taiwan

Ju-Chou Chen