Advanced Higher Engineering Science Practice Questions - Advanced Higher Engineering Science (Qualifications Scotland SCQF Level 7) Exam

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An op-amp Schmitt trigger comparator has output saturation levels Vsat = ±12 V. The feedback resistor network uses R1 = 10 kΩ connected from Vout to the non-inverting input and R2 = 100 kΩ to ground. What is the upper threshold voltage (VUT)?

+1.09 V +1.20 V +10.9 V +12.0 V

Correct Answer:

+1.09 V

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