F.E.D. FINAL REPORT
FOR PROF STRANO FED 101
TABLE OF CONTENTS
ABSTRACT (A PAGE MAX)
EXPLAIN DESIGN REQUIREMENTS
SUMMARIZE THE DESIGN PROCESS USED
REPORT ON OUTCOME OF DESIGN
A semiconductor integrated circuit chip should be cool enough for you to keep your
dinger on it without discomfort.
EXAMPLES Derating & Reliability Concepts
11) What is the maximum voltage that should be applied to a 1K ohm, 2 W resistor
derated to 1 watt
FINDING ELECTRICAL POWER BY ALTERNATE EQUATIONS
P = V I = V^2/R = I^2 R
EXAMPLES Given this circuit:
Find the power dissipation in this circuit for
R = 60 ohms and v = 120 volts.
P = v^2/r =
Find the maximum voltage which should be connec
THE DESIGN PROJECT
1. Design projects are discussed. Groups should have a block diagram ready to show
2. Once the functional block diagrams are understood, groups begin to design and
construct the circuit. All work, even circuits th
Any random flow of tree electrons is changed by the presence of an electric field.
A steady flow of electrons creates a DIRECT CURRENT, with direction of the
current flow assigned to positive charge.
One AMPERE is equal to a coulomb/second in MKS units.
Voltage may be expressed with the similar prefixes:
Microvolts, millivolts, volts, kilovolts
Practical resistance values are usually expressed in:
Ohms, kilohm (E+3), or Megohm (E +6) values
EXAMPLES Change the units to the required value(apply dimensiona
Each group of students is to maintain a record of every measurement and trial circuit in a
laboratory notebook. The notebook must be bound, not loose leaf. An inexpensive
Composition notebook can be used. At each laboratory meeting t
DIRECT CURRENT ELECTRICITY
x 10 E-31 kilograms
x 10 E-19
The electron is responsible for our electronic marvels. It is easily controlled, very fast
and very small. There is no other physical quantity like i
Wire the following circuit:
Measure the quantities needed to complete the following table:
For each value of Rb above, using measurements
Wire the following circuit:
+ 0 15V
Vary V. Observe two conditions: (1) bulb is just off (almost no light) and (2)
bulb reaches maximum brightness. Measure Ib, Ic and V for these two conditions
Repeat the measurement described in 4 but instead of adjusting the power supply
voltage use a resistive voltage divider using a potentiometer, as shown below.
LABORATORY EXPERIENCE 4
Measure the open circuit voltage and short circuit current of the solar cell.
OPEN CIRCUIT VOLTAGE
For thee solar cell make a plot of I short circuit vs. ligh
FED EE MODULE
Each group is required to design a circuit that will turn on a light when the
sensor is in the dark and turn off the light when the sensor is exposed to
the ambient room light
The circuit will be constructed and de
17) AWG #14 wire has a diameter of about 0.08 inches. What is the total resistance for
a two wore, 200 foot run of copper conductor?
18) If aluminum conductors are used for a 200 foot run of conductors, what is their total
ANALYSIS OF SERIES CIRCUITS
Only one current flows in a series circuit.
All voltages about a loop add up to zero.
V, I and R are related by Ohms Law ( I = V/R).
Find: All electrical properties of this circui
ANALYSIS OF SERIES/PARALLEL CIRCUITS
Find: I, I1 and I2
Solution: The circuit can be reduced to a single equivalent resistor in
parallel with 10V.
To obtain Reg note that R2 and R3 are in paral
FED 101 COURSE OUTLINE
Introduction, formation of groups. Lecture
on DC Electricity. Distribution of laboratory equipment
Measurement of voltage, current and resistance. Color
code for resistors. Use of the proto board. (Labora
RESISTOR COLOR CODE
BANDS 1 2 3
R = (BAND 1) (BAND 2) X 10(BAND 3)
BAND 4 SPECIFIES RESISTOR TOLERANCE
EXAMPLE: RED RED YELL
Volt AMP characteristic of solar cell choose an operating point some reasonable point
near middle where product VI is large. For sample design let VB = 6V. We must put Ns
solar cells in series so total voltage of the Ns cells is 6.7v
Ns(.18) = 6.7
Notes on Charging Batteries Using Solar Cells
Array of Solar Cells
The principle involved in designing this type of circuit is:
Charge Out during Night
Charge In during Day
The charge is expresse
A solar cell in bright sunlight has an open circuit voltage (as measured
voltmeter) of 3 volts. When an ammeter is connected across the cell the
current is 0.5 ma.
A photo transistor is being used to detect whether a red LED is off or on. Explain
In the circuit shown above if the 2k resistor was changed to a 1k resistor which of the
following would happen pick best choice
The LED would get brighter
The LED would get dimmer
The LED would go out
There would be no cha
FED 101 EE MODULE
#1 For each circuit. Find the total resistance between point x x that an ohmmeter
#2 Find the reading of the voltmeter, ammeter #1 and ammeter #2 in the circuit shown.
ELECTRICAL ENGINEERNG MODULE
Application of Basic Laws (OHM-KV-KCL)
CLOSED BOOKS & NOTES
Voltmeter V indicates 1.5 volts
FIND: (a) the current through the BULB
(b) the voltage across the BULB
Dr. Frank FED 101 EE Module Quiz 93-10-13
In the circuit shown above calculate the reading of Ammeter #1, Ammeter #2 and the
For circuits a
The simplified circuit is:
I = 10V/10K = 1X10-3 A
Returning to Figure A.
V = I (R23) = (1ma) (2K)
V = 2V this is the voltage across the parallel resistor R2 and R3.
Finally using OHMs LAW
=0.667ma, I2 =
Checking KCL I
ANALYSIS OF PARALLEL CIRCUITS
Only one voltage exists in a parallel circuit.
All currents at a point add up to zero.
V, I and R are related by Ohms Law (I = V/R).
Find: All electrical properties of this circ
LABORATORY EXPERIENCE 3
Introduction: Transistors are three terminal (wire) devices. Their operation has
been discussed by your instructor. The usual wiring for the common emitter
connection is shown below:
Emitter is connected
LABORATORY EXPERIENCE 1
Check out kit of electrical parts, DVOM and proto-board.
Get acquainted with the resistance scales of the DVOM. Measure at least
ten resistors including your own body resistance (from left hand to right
hand). Use the color c