| 摘要 |
<p>An oscillator the oscillation of which can be adjusted over a wide range and which can stably operate and can be easily formed in an integrated circuit, comprises two phase shifting circuits (10C and 30C) each having a first serial circuit which divides the voltage of an inputted AC signal into about halves and which comprises two resistors, a second serial circuit which shifts the phase of the inputted AC signal by prescribed angle and which comprises a capacitor and a variable resistor, and a differential amplifier which performs prescribed amplification of the difference between the outputs of the first and second serial circuits, a noninverting circuit (50) connected to the input of the phase shifting circuit (10C), and a feedback resistor (70) which feeds back the signal outputted from the phase shifting circuit (30C) to the input of the noninverting circuit (50).</p> |
