Lissajous Figure Apparatus

Fixed Output DC Regulated Power Supply of 15V. Builtin Sine Wave Oscillator of 1 kHz frequency. Capacitor & resistance are mounted behind the front panel selectable through SPDT switches with connections brought out on sockets. One potentiometer (S) is mounted on the front panel to change the phase difference. One operational amplifier IC 741 is placed inside the cabinet with connections brought out on sockets for 180º Phase Shift.