TWIN-T OSCILLATOR Objectives of this experiment: TWIN-T OSCILLATOR (OR) NOTCH FILTER notches or attenuates frequency near the oscillator frequency. An op-amp is used as the amplifier in this oscillator. The positive feedback is through the voltage divider to the non-inverting input and the phase-shift of the twin-T filter. Built in regulated power supply: + 15V/300mA Input Supply: 230 VAC/50Hz mains operated. Dimension: 27cms x 17cms x 10cms. Weight: 500gms Qty :