PTC has been awarded " Method for adjusting light brightness using a toggle switch and related illuminant system" in ROC.

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PTC has been awarded "Patent Awarded- Voltage Controlling Circuit" in ROC.

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PTC has been awarded "STABILIZING METHODS FOR CURRENT SOURCE" in China.

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PTC has been awarded "CLASS-D POWER AMPLIFIER CAPABLE OF REDUCING ELECTROMAGNETIC INTERFERENCE AND TRIANGULAR WAVE GENERATOR THEREOF" in ROC.

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PTC has been awarded "LED Driver Circuit" in Japan.

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PTC has been awarded "Light-emitting diode driving circuits and driving methods thereof" in USA.

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PTC has been awarded "LED Driver Apparatus " in ROC.

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PTC has been awarded "Patent Awarded- AMPLIFYING CIRCUIT CAPABLE OF SUPPRESSING SPIKES OF AN AUDIO SIGNAL" in USA.

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PTC has been awarded "INTEGRATED CIRCUT WITH SERIAL INTERFACE, RECEIVING TRANSMITTAL INFORMATION CONFORMING TO TWO COMMUNICATION PROTOCOLS" in China.

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PTC has been awarded "Patent Awarded- CURRENT MIRROR CIRCUITS" in USA.

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