$$\text { Figure } 17

Question

$$\text { Figure } 17 < 2$$ -Find V_GS in Figure 17-2. A) -5 V B) 10 V C) 5 V D) -10 V

Quizplus · Accepted Answer

If we follow the path starting from VS1, it goes through the voltage drop of -5 V at U1B1, then gets amplified by a factor of 2 at the op-amp and reaches U1B0. Since the output of the op-amp is constrained to be within a certain range (typically Vcc and GND), it cannot go beyond these limits. In this case, we see that GND is the lower limit, and the op-amp output would hit this limit when the input voltage is -5/2 = -2.5 V. Therefore, V_GS is -5 V.

Figure 17<2\text { Figure } 17 < 2 Figure 17<2 -Find VGS in Figure 17-2

$\text { Figure } 17 < 2$ -Find V_GS in Figure 17-2