Rectifier is the most common type of diode.
(AC voltage DC voltage)
Diodes used in other application
Ex: Zener Diode optimized for its breakdown
properties
Important because they are the key to voltage
regulation
The zener diode is connected in parallel w
BASIC ELECTRONICS
SMES 1204
DR SELVI
012-6655577 (hP)
03-79674147 (Lab)
References
1.
Robert L. Boylestad and Louis Nashelsky, Electronic Devices
and Circuit Theory, 7th edition, Prentice Hall (1999).
2.
Albert Paul Malvino, Malvino Electronic Principles
Lecture 3: Circuit analysis
Question:
Find the Thevenin equivalent circuit between the output terminals A & B of
The circuit in the figure below. If there were a load resistance connected
across terminals A & B it would first have to be removed.
R3
R1
Vs1
2.1 DC VOLTAGE SOURCES
An Ideal DC voltage source is one that gives constant load voltage independent of
load resistance.
VoltageW)
1 1
10.5 Constant voltage
independent of RL
10
10.5
1 102 104 1c
Resistance RL (9)
In practice, when RL :> 0, IL : so .
4-1: Method of Mesh Currents
A mesh is the simplest possible loop.
Mesh currents flow around each mesh without
branching.
A mesh current is an assumed current
IR drops and KVL are used for determining mesh
currents.
4-2: Network with AC sources
4-2: N
AC RESISTANCE BF THE EMI'I'I'ER DIDDE
Censicler graph ef current versus veltsge ef emitter diede (IE FEE
At cfw_3112 re = 5 mVI1DD|1A
=5
At cfw_3122 re = 5 rTIIu" I EDDILA
= 25
A small ec Heltsge ecress (vi = Emu emitter diede preduces ec
emitter curre
Circuit rectifier
- The function of rectifier is to change Vac (alternating current signal)
to Vdc (direct current signal)
Half-wave rectifier
- The half-wave rectifier consist of a p-n diode which is connected in
series with input Vac and a load resistor
The transconductance curve of a JFET is a graph of ID versus VGS
JFETs can
including:
be
used
for
several
High Input Impedance Amplifier
Low-Noise Amplifier
Differential Amplifier
Constant Current Source
Analog Switch or Gate
Voltage Controlled Resi
Ex. If RB = 30 ohm,
Rs ~3 kohm
Load resistance 300 kohm
Large voltage +100V never reaches the load
because diode limits the output voltage to a
Maximum value of +5.7 V.
Rectifier is the most common type of diode.
(AC voltage DC voltage)
Diodes used in oth
1. Find the barrier potential of Si diode at 100oC.
2. Find the barrier potential of Si diode at 0oC.
The barrier potential of Si diode at room temperature is 0.7
N-channel enhancement type MOSFET
1. Substrate (base) p-tpe material
2. 4 terminals (but substrate-source may sometimes be internally connected
3. Source and Drain terminals connected through metallic contacts to n-doped
regions
4. BUT no channel linking
Junction field-effect transistor (JFET)
-unipolar transistor
-voltage controlled device- input voltage controls an output current
n-Channel JFET
A silicon bar of n-type semiconductor with 2 islands of p-type
material embedded in the sides
GATE controls cu
Example 1.
Refer to diagram above:
a) VCE = 4V and Ic = 3mA. What is the value of IB?
b) IB = 90A and VCE = 4 V. What is the value of Ic?
c) VCE = 6V and Ic = 8mA. What is the value of ?
d) IB = 100A and VCE = 8 V. What is the value of Pc?
a) VCE = 4 V an
The base-biased amplifier has an unstable Q point.
Instead an emitter-biased amplifier (with voltage divider bias)
With its stable Q point is preferred.
Chapter 23: Fresnel equations
Recall basic laws of optics
normal
i
Law of reflection:
i r
Law of refraction
Snells Law:
sin i n2
sin t n1
r
n1
n2
t
Incident, reflected, refracted, and normal in same plane
Easy to derive on the basis of:
Huygens principle
Chapter 5
Applications of
Newtons Laws
The soles of hiking shoes are designed to
stick, not slip, on rocky surfaces. In this
chapter well learn about the interactions
that give good traction.
N
ewtons three laws of motion, the foundation of classical
mech
Physics 161
FREE FALL
Introduction
This experiment is designed to study the motion of an object that is accelerated by the
force of gravity. It also serves as an introduction to the data analysis capabilities of Data
Studio. To observe the relationship be
EXPERIMENT 2
MOMENT
1. Objectives
To learn the fundamentals of moment.
To learn the relations between the distance from the origin of the coordinates and the point of action of
the force.
To learn the moment as a function of the angle between the force
EXPERIMENT 2: FREE FALL ANALYSIS
Objective:
To determine gravitational acceleration by studying the velocity of a falling object as a
function of time. A secondary objective is to evaluate the precision of your ruler-fit function, and
to compare it to the
R
LEP
1.3.07
Free fall
Related topics
Motion along a straight line due to constant acceleration, laws
of falling bodies, gravitational acceleration.
Meter scale, demo, l = 1000 mm
Support rod-PASS-, square, l = 1000 mm
Connecting cord, 1000 mm, red
Connec
OBSERVATIONS AND ANALYSIS: Communication
1 Sections have clear titles and are in order (hypothesis, observations, analysis, conclusion)
2 The observations must only contain directly observed and measured data. There should be no calculations in the
observ
SMES 2204/ SIF 2004 MECHANICS
SESSION 2016-2017 SEM 1
TUTORIAL 1
1. Given two vectors A i j and B j k , find the following:
(a) A B and A B
(b) 3 A 2B
(c) A B
(d) A B and A B
(e) Angle between A and B
2. The height of a hill in meters is given b
PO 10: Function effectively as an individual, and as a team member or a leader in diverse teams and multidisciplinary settings.
Your task is to explain the concepts of center of gravity, centroid, and moment of inertia at a level capable of
being understo
Problem Statement:
Is the resonance frequency of a circuit same with the theoretical resonance frequency?
Objective:
To investigate the differences between the theoretical resonance frequency of a circuit
and the experimental theoretical resonance frequen