week 5 written

· Electronics I and Lab

Transistor Biasing

1. Given a BJT unloaded amplifier shown in figure 1 below with β=100.

1. Draw DC equivalent circuits of this unloaded amplifier.

1. Draw the DC load line of the circuit.

1. Determine the following dc values for the amplifier.

3. VB

3. VE

3. IE

3. VC

3. VCE

Figure 1

· Given the figure 2 below, calculate:

. emitter current (IE)

. collector voltage (VC)

Figure 2

· Given circuit in figure 3 with the labeled parameters, calculate the following:

. VB

. VE

. IE

. VC

. VCE

Figure 3. PNP Transistor