| 摘要 |
<p>A periodic low current from an intermittent Low current generator (5) is used, and fluctuations of r1 and r10, c1 and c2, and I6 and I20, thus cancel one another. Thus, omega 0 is not fluctuated unless the oscillation frequency Tosc of a pulse wave generator OSC is fluctuated. Television and ratio audio ICs using an LPF filter do not require specific provision of any oscillator for a filter circuit, because they have an accurate oscillator. The oscillation frequency of the pulse wave generator OSC should be at least 20 times the pass band of the filter circuit. <IMAGE></p> |
