| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable a constant-voltage output stable to a plurality of AC frequencies by a constitution at a low cost in an AC generating circuit. <P>SOLUTION: In the AC generating circuit, the on/off of output voltages from a first voltage source and a second voltage source are changed over respectively in response to the frequencies of clock signals output from signal sources, when the clock signals output from a plurality of the signal sources can be changed over by a plurality of the frequencies. <P>COPYRIGHT: (C)2007,JPO&INPIT |
