Final answer:
The summing amplifier in Figure 5.74 is a type of operational amplifier circuit that sums multiple input voltages to produce an output voltage. The output voltage can be calculated using the formula Vout = - (V1/R1 + V2/R2 + V3/R3), where V1, V2, and V3 are the input voltages, and R1, R2, and R3 are the corresponding resistors.
Step-by-step explanation:
The summing amplifier in Figure 5.74 is a type of operational amplifier circuit that sums multiple input voltages to produce an output voltage. In this circuit, the resistors labeled 10 ㏀ and 30㏀ are used to weight the input voltages. The output voltage of the summing amplifier can be calculated using the formula:
Vout = - (V1/R1 + V2/R2 + V3/R3)
Where V1, V2, and V3 are the input voltages, and R1, R2, and R3 are the corresponding resistors. To determine the output voltage, you need to substitute the values of the input voltages and resistors into the formula.