OSCILLATOR

摘要

An oscillator which is easily fabricated in an integrated circuit and stably operates and the oscillatory frequency of which can be adjusted within a wide range. The oscillator is constituted of two phase shifting circuits (10C and 30C) which perform prescribed phase shifting by combining signals of the same phase and opposite phase generated at the source and drain of a FET through capacitors or resistors, a noninverting circuit (50) which amplifies the output signal of the phase shifting circuit (30C) of the second stage without changing its phase, and a feedback resistor (70) which feeds back the signal outputted from the circuit (50) to the input of the phase shifting circuit (10) of the first stage.