This preview shows page 1. Sign up to view the full content.
UNIVERSITY OF CALIFORNIA
College of Engineering
Department of Electrical Engineering and Computer Sciences
EE 105
Prof. Pister
Spring 2011
Homework Assignment #4
Due in the 105 box on the 2
nd
floor of Cory, 5pm Friday 2/11/2010
Problem 1:
On a single graph on a piece of graph paper, draw a linear voltage axis from 0 to 2V, and a linear
time axis from 0 to 3ns and plot the time response of the following circuits:
a) a 1mA step function current source feeding a 1pF capacitor.
b) a 1k
resistor hooked to a 1V step function supply on one side, and a 1pF capacitor on the other.
c) a 1uH inductor (I'm not so good at drawing inductors) from a 1V step function supply feeding a 1pF capacitor.
Problem 2
: Consider an NPN transistor with I
S
=10
fA and a
of 100.
a) If the device is biased in the forward active region at room temperature, ignore the Early effect and calculate
the baseemitter voltage required to get a collector current of 1uA.
Don’t use a calculator!
What is the base
current that corresponds to this bias point?
b) If V
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 08/30/2011 for the course EE 105 taught by Professor Kingliu during the Fall '07 term at University of California, Berkeley.
 Fall '07
 KingLiu

Click to edit the document details