| 摘要 |
<p>PURPOSE:To increase the impedance of the natural frequency viewed from the power source side so as not to allow the formation of an oscillation circuit by a method wherein a damping resistor is connected in parallel to the reactor of the second filter connected in parallel to the capacitor on the first filter. CONSTITUTION:The first reactor 2 which consist the first filter device and the first capacitor 3 are provided and, at the same time, the second reactor 8, which consists the second filter device, and the second capacitor 9 are connected in parallel to the first capacitor 3. In addition, a damping resistor 10 is connected in parallel to the second reactor 8. As a result, the damping resistor 10 becomes the damper of the oscillation element on the second filter circuit enabling to constitute a nonoscillation circuit and, moreover, the damping resistor 10 of a small value can be used.</p> |
