| 摘要 |
PROBLEM TO BE SOLVED: To stabilize output power even when noise is overlapped to an input voltage.SOLUTION: A power supply apparatus includes: a full wave rectification circuit 4 for rectifying and smoothing AC power to convert the AC power into DC power; a high-pass filter circuit 5 for making a frequency corresponding to noise out of frequencies of the AC power pass therethrough; a half-wave rectification circuit 6 for rectifying and smoothing a waveform of the frequency passing through the high-pass filter circuit 5 to convert the power into DC power; a power consumption circuit 7 for consuming power for the DC power converted by the half-wave rectification circuit 6 from the DC power converted by the full-wave rectification circuit 4; and an output terminal 8 capable of outputting the DC power after consuming power by the power consumption circuit 7 to the outside.SELECTED DRAWING: Figure 1 |
