EE 321 Lab
Prelab for Lab 12: MOSFET II
Read the lab before answering these questions.
1. For part 4 of this lab there are 2 different designs for the
a circuit to turn on a lamp or other device. The N-channel-power FET
acts like a on-off switch. The switch must be in series with
the lamp. Thus the choice is whether the switch or the lamp
is connected to ground; the other will be connected to the power
- Draw both circuits.
- Find the drain and source voltages for the off condition.
Find the necessary gate voltage for both circuits in this off condition.
- Find the drain and source voltages for the on condition.
Assume VDS is 0.1 V when on and a VGS of 5 V
Find the necessary gate voltage for both circuits in this on condition.
Which circuit will work better for this lab?
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