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June 2023 StudentZone Quiz Solution

Question 1:

For the circuit presented in figure 1 express VREF(LOW) and VREF(HIGH) as equations depending on R1, R2, R3 and W2. What is the ration between VREF(HIGH) and VREF(LOW) if all resistances are equal?

Answer 1:

The VREF(LOW) and VREF(HIGH) can be expressed as follows:

Considering that the resistances are equal R1 = R2 = R3 we can define the ratio between VREF(HIGH) and VREF(LOW) as follows: