| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric power amplifier which generates no noise or EMI (electromagnetic interference) due to ringing and does not arise switching loss. Ž<P>SOLUTION: The electric power amplifier includes a signal processing portion which converts an input analogue signal to a pulse signal, an analogue amplifier which amplifies the pulse signal from the signal processing portion in an analog form approximately to a potential difference between high/low electric source voltages, and a low pass filter which passes a low frequency component of the pulse signal output from the analogue amplifier and obtains an output analogue signal reproducing the waveform of the input analogue signal. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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