| 摘要 |
Oscillation is easily and reliably initiated in an oscillator by increasing the gain of the circuit at startup time. For example, the gain of an oscillator circuit may be increased at startup by reducing (by means of 18,20) the value of a user controlled impedance (14) until oscillation commences. Alternatively, or in combination, the input impedance of an amplifier (10) used in the oscillator may be reduced (by means of 44,40) at startup to facilitate the initiation of oscillation. <IMAGE> |
