ECET 220 WEEK4

Chapter 4 Problems: 10, 11, 13, 21, and 24

10.

Assume a JFET has the transconductance curve shown in Figure 4–76.

· (a) What is IDSS?

· (b) What is VGS(off)?

· (c) What is the transconductance at a drain current of 2.0 mA?

Figure 4–76

11 .

Assume the JFET with the transconductance curve shown in Figure 4–76 is connected in the circuit shown in Figure 4–77.

· (a) What is VS?

· (b) What is ID?

· (c) What is VDS?

Figure 4–77

13 .

For each circuit in Figure 4–78, determine VDS and VGS.

Figure 4–78

21 .

Each E-MOSFET in Figure 4–81 has a VGS(th) of +5 V or −5 V, depending on whether it is an n-channel or a p-channel device. Determine whether each MOSFET is on or off.

Figure 4–81

24.

· (a) Assume VGS = −2.0 V for the circuit in Figure 4–83. Determine VG, VS, and VD.

· (b) If gm = 3000 mmho, what is the voltage gain?

· (c) What is Vout?

Figure 4–83