| 摘要 |
PURPOSE:To improve the oscillating amplitude and oscillation start characteristic by connecting a coil between an input and an output of an inverse amplifier, connecting a capacitor between said input and ground and between said output and ground and connecting a crystal vibrator between said input and ground. CONSTITUTION:The oscillation circuit consists of the inverse amplifier 3 and the crystal vibrator 4. When the frequency reaches a frequency being an integral number of multiple of the basic frequency of a crystal, that is, the vicinity of a high-order oscillating frequency, the crystal is resonated, locked to the high-order oscillating frequency and made stable in this state. Thus, the oscillation depending on the coil and capacitor is eminent and the crystal is in the basic oscillation, the attenuation at this part is not almost caused and a high loop gain is obtained. Then the oscillation intensity is increased and instability at the start of oscillation and the extension of the output amplitude are attained. |
