ELEC3106 LAB 1: Op-amp measurements
Student Name: TANG JIE (3469906) ZHAOJIAN GAO(3381763)
Objective
This lab aims to understand the non-idealities in analogue circuits by measuring some
parameters, like the offset error, band-width, slew rate, PSRR, on o
ELEC3106 LAB 3: PCB EMI measurements
Student Name: TANG JIE (3469906) ZHAOJIAN GAO(3381763)
Power Supply Separation:
Configuring the board using the jumper
setting as follows
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Amplifier power supply (P2) and out
ELEC3117
Electrical Engineering Design
Course Outline Semester 2, 2015
Course Staff
Course Convener:
Project Coordinator:
Dr. Alex von Brasch, Room EE338, [email protected]
Luke Dolan, [email protected]
Consultations: The lectures and labs are t
ELEC3106
Electronics
Lab 5: LED torch design
Objective
The objective of this laboratory session is to give the students experience with a small open-ended
design problem in which they can benefit from the knowledge gained throughout the course.
Components
ELEC3106
Electronics
Lab 2: Logic gate measurements
Objective
The objective of this laboratory session is to give the students a good understanding of critical
non-idealities often encountered in digital gates by directly measuring some of these.
Componen
ELEC3106
Electronics
Lab 1: Op-amp measurements
Objective
The objective of this laboratory session is to give the students a good understanding of critical
non-idealities often encountered in analogue electronics by directly measuring some of these
on a s
ELEC3106
Electronics
Lab 3: PCB EMI measurements
Objective
The objective of this laboratory session is to give the students a good understanding of critical
PCB level Electromagnetic Interference phenomena and effects.
Components
For this laboratory exerc
ELEC3106
Electronics
Lab 4: EMI simulations with SPICE
Objective
The objective of this laboratory session is to give the students a good understanding of the possibilities a circuit simulator (as SPICE) offer for modelling electrical phenomena; in particu
ELEC3106 LAB 3: PCB EMI measurements
Student Name: TANG JIE (3469906) ZHAOJIAN GAO(3381763)
Power Supply Separation:
Configuring the board using the jumper
setting as follows
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Amplifier power supply (P2) and out
ELEC3106 LAB 5: LED Torch Design
Student Name: TANG JIE (3469906) ZHAOJIAN GAO (3381763)
Pre-lab Work:
As to the requirements, the schematic
diagram is attached at last page.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
How do you deal with switc
Edmund Li
ELECTROMAGNETIC SPECTRUM
Electromagnetic waves are coupled electric and magnetic
fields that oscillate at the same frequency and propagate with
a phase velocity that is in vacuum. These waves can be
grouped into bands based on their frequency
an
Edmund Li
TIME VARYING FIELDS
Recall the fundamental postulates in magnetostatics and electrostatics:
Magnetostatic
Electrostatic
We also defined the electric field density for linear and isotropic media as
intensity
and introduced Ohms Law (point current
Edmund Li
Example
Consider a circular wire loop of radius a located in the yz plane and carrying a steady current I as
shown. Calculate the magnetic field at an axial point P a distance x from the centre of the loop.
Due to the symmetry of the ring, the y
Edmund Li
M OVING C ONDUCTOR
IN
S TATIC M AGNETIC F IELD
When a conductor moves with a velocity in a static magnetic field m a force
will cause
the freely movable electrons to drift towards one end leaving the other end positively charge. This
continues u
Edmund Li
E DDY C URRENTS
Time varying magnetic fields also induce currents in the material of a magnetic core. These currents are
called Eddy currents. Given that:
The direction of the eddy current is such as to oppose . The eddy current induced magnetic
Edmund Li
M AGNETIC F IELD I NTENSITY
The macroscopic effect of magnetization can be studied by incorporating the equivalent volume current
density:
We define the magnetic field intensity
as:
This means that:
Where is the volume density of free current. B
Edmund Li
M AGNETIC C IRCUITS
In this section, we focus out approach on the following sets of equations:
is known as he magnetomotive force (mmf) and is analogous to the emf in an electric circuit. Thus it is
not a force but rather a measure of strength o
Edmund Li
M AGNETIC F LUX
We define the magnetic flux (Wb) as the total of the magnetic flux density over a given area:
Proof:
Since
and we can apply Stokes theorem:
B IOT -S AVART L AW
In many applications we are interested in determining the magnetic fi
Edmund Li
MAGNETOSTATICS
The magnetic field produced by steady currents or permanently magnetized material is called
magnetostatics. On top of the electrostatic force experience by charges in an electric field, moving
charges in an external magnetic field
Edmund Li
I DEAL T RANSFORMER
In an ideal transformer, the flux leakage is negligible and we can assume that
so:
Rearrangement yields:
Using Amperes Law:
For an ideal transformer, the core is infinitely permeable so
flux in the core is negligible. Rearran
ELEC3106 LAB 4: EMI simulations with SPICE
Student Name: TANG JIE (3469906) ZHAOJIAN GAO(3381763)
A diode-like element:
Figure 1
Figure 2
The schematic diagram to simulate the
diode is drawn in Figure 1.
To simulate the I/V characteristic of the
diode-lik
ELEC3106 LAB 2: Logic gate measurements
Student Name: TANG JIE (3469906) ZHAOJIAN GAO(3381763)
Power-supply decoupling:
a. Bare gate:
After applying 1 kHZ square wave to Vsg
without capacitive load and decoupling
capacitor, the Vout (Blue line) and and Vc
Edmund Li
M OVING C IRCUIT & T IME
VARYING FIELD
In this situation, Lorentzs force equation describes the force on a charge q:
For an observer moving with charge q, there is no apparent motion, and the force on q can be interpreted
as an electric field gi