5. Adjust the potentiometers R11 and R13 until the voltages VA = VB = -3 VDC. 6.

Question

5. Adjust the potentiometers R11 and R13 until the voltages VA = VB = -3 VDC. 6. Calculate the output voltage VOUT using the simplified formula found in part IV.A.1. Record both the calculated value and DMM measurement of VOUT in Table 5 on the worksheet. Also, determine the difference between the measured value and calculated value.

Explanation / Answer

a) 100% => 30 V 10% => 3V also 50% = 0 V so to get -3V, we have to shift the pots. towards -15V by 10% => set R11 and R13 at 40% b) Vout = (10/30)*(1 + (20/10)*VB - (20/10)*VA = VB - 2*VA = -3 -2*(-3) = 3 V

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