| 摘要 |
<p>PURPOSE:To attain the proceeding of the phase of a signal without using a coil by providing at least one shifting phase circuit composed of an off-switch and a capacitor connected serially to the off-switch. CONSTITUTION:A coil 1 and a capacitor 2 are mutually serially connected, a capacitor 3 is connected in parallel to the capacitor 2 through an off-switch 4 and these coil 1 and capacitors 2 and 3 constitute a resonance circuit. The off-switch 4 is operated, the contact is interrupted, and thus, the capacity value in the circuit is reduced, the resonance frequency is enlarged and the phase of the signal in the circuit can be essentially proceeded. Thus, since the capacity value of the capacitor is hardly changed by an ambient temperature, the advancing phase angle can be set with good accuracy and can be maintained.</p> |
