Page 406 - Op Amps Design, Applications, and Troubleshooting

382 ARITHMETIC FUNCTION CIRCUITS

REVIEW QUESTIONS

1. Refer to Figure 9.2. What is the effect on circuit operation if resistors R 3 to R 5 are all
increased to 20 kilohms?
2. Refer to Figure 9.2. Show how the circuit can be analyzed by applying the
Superposition Theorem to the input circuit.
3. Refer to Figure 9.5. What is the effect on circuit operation if resistor R 3 develops an
open?
4. Refer to Figure 9.5. What is the effect on circuit operation if resistor R 2 develops an
open?
5. Refer to Figure 9.9. What is the effect on circuit operation if resistor JR 3 is doubled in
value?
6. Refer to Figure 9.9. Describe the effect on circuit operation if resistor Rj becomes open.
7. Will the circuit shown in Figure 9.9 still operate correctly if resistors R 4 and R$ are both
doubled in value? Explain your answer.