Holtek Semiconductor Corp.

Yuan-Ho Liu

Chun-Hsiung Chen

Chun-Ku Lin

A method of power control apparatus for electric cookers is provided. In the method, a micro controller unit (MCU) with a programmer pulse generator (PPG) and analog/digital (AID) converters is utilized, wherein a command can be inputted externally to the MCU for restarting or stopping the output of the PPG; and the PPG is capable of outputting pulses of programmable pulse width, being programmed by software for power control and, also, the protection of power control apparatus.

Power control apparatus and method for electric cookers

A driver control circuit and method for a cold cathode fluorescent lamp (CCFL), that the driver control circuit comprises: at least a comparator; at least an input/output port, at least an analog-to-digital converter; at least two programmable pulse generators (PPGs), including a first programmable pulse generator and a second programmable pulse generator, i.e. PPGand PPG, being activated for generating pulse signals in an alternative manner for driving the CCFL; at least a programmable frequency divider (PFD), capable of programming the output thereof to be used as the control signal for activating the PPGand the PPGaccording to the alternative manner defined by the transition frequency of the PFD.

Driver control circuit and method for cold cathode fluorescent lamp

A power control apparatus for electric cookers includes an input unit, an output unit, a micro controller unit (MCU), having a programmer pulse generator (PPG) and at least an analog/digital converter built therein, a power circuit, an exciter-coil circuit, an output circuit of insulated gate bipolar transistor (IGBT), and a drive circuit of insulated gate bipolar transistor (IGBT). A command can be inputted externally to the MCU for restarting or stopping the output of the PPG and the PPG is capable of outputting pulses of programmable pulse width.

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Fengyuan, Taiwan

Yuan-Ho Liu