| 摘要 |
PURPOSE:To eliminate the noise voltage induced in accompany with AM modulation of the oscillation signal and to improve the S/N of the output signal, by providing a low frequency bias capacitor to an oscillating circuit. CONSTITUTION:A low frequency bias capacitor C11 is connected in parallel to a capacitor C4. The capacitor C11 is turned into a chip capacitor having >=0.01mu F capacity value to secure the sufficiently low impedance compared with a low frequency. As a result, the noise voltage of an oscillating circuit 1 is grounded to prevent the AM modulation of the oscillation signal. |
