. Write the theoretical equation for the output voltage in the circuit of Figure 1 with the input voltages prescribed by procedure step 2. Compare this equation with the equation based on the measurements obtained in procedure step 2. 2. Repeat question 1 for procedure step 3 . 3. Write the theoretical equation for the output voltage in the circuit of Figure 2 with the input voltages prescribed by procedure step 2. Compare this equation with the equation based on the measurements obtained in procedure step 5. 4. Repeat question 3 for procedure step 6 . 5. Design a summing amp with three inputs having gains A v​ =2,3, 2. With v S​ adjusted to produce a 1Vpk sine wave at 1kHz, observe the output voltage v O​ (and v S​
to note the phase relationship) on an oscilloscope set to de input coupling. Sketch the output waveform. Be sure to note the de level in the output. 3. Interchange the 5 V de power supply and the 1Vpk signal 8enerator. Repeat procedure step 2 . 4. To investigate the use of an operational amplifier in a difference amplifier configuration, connect the following circuit: