Value of I 1 , I 2 and V S G

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Chapter 13, Problem 13.15TYU

To determine

Value of I1, I2 and VSG

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JFET Output Characteristics For the circuit in Figure 13, determine the output characteristics of the JFET for VGS = -6V. AO1=-6V. IDSS= 110mA, Vp -8V. Using the current equations for the linear and saturation regions, plot VDs (X-axis) vs. ID (y-axis) for the following AO0 values: 0, 0.2, 0.6, 1.0, 1.4, 1.6, 2.0, 2.5, 3.0, 4.0 5.0 V. For VDS (VGS-Vp) (linear region), use: For VDS (VGS-VP) (saturation region), use: Vp ID 2/pss (VGS -VP-VDS) VDS 2 ID = = loss (1 - Vas) ² Vp AOO GND AO1 J1 Ammeter Figure 13: JFET Output Characteristics Circuit Hint: Assuming a negligible voltage drop over the ammeter, it is safe to assume A00=VDs. Also, recognize that the saturation equation does not contain a VDs term. Take care not to drop the negative sign off of VGs or VP when you substitute the values into the equations.

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