EMC
By Your Design A Practical
Applications
Seminar and Workshop (Including EMC Design
Software)
Seminar Schedule:
Days 1-3: EMC Design Class, Lecture and Discussion
Day 3: Workshop Using Computer Programs Designed by the Instructors
Note: Wear casual
business attire. Prepare for moderate temperature variation in the room.
Day
1
1.
Introduction to EMC
a. Why you need
to consider EMC in your design
b. The Real World and EMC Test Standards
(1) FCC and Canadian
EMC requirements
(2) European EMC Directive
(3) Mil 461 and RTCA EMC requirements
(4) Other world EMC regulations
(5) Real world measurements and levels
2.
Interference overview
a. Typical
noise path
b. Wavelengths, bandwidths and dB's
c. Overview of radiated interference
3. Grounding
4. Cabling - principles from crosstalk to how shielding works
5. Passive components
6. Electric and magnetic fields from simple circuits
7. Fields radiated by non-sinusoidal sources
8. General strategy for low emission product design
5:00-6:30
pm Laboratory Tour
Optional
tour of a modern EMC test facility
Day
2
Controlling radiated
emissions at the device
Digital circuit
noise and layout
Control signal
return currents on PCB's
Learn how EMC and
signal integrity are interrelated
Filtering - how
filters work and how to design your own using Pspice
Emission control
in motherboards & backplanes
Hands-on calculations
made throughout the day
Controlling radiated
& conducted emissions from switch mode power supplies
Reducing emissions
from cables and packaging
Calculating emissions
for a digital circuit
Shielding
Calculation of
emissions from enclosures
Current density at 1 MHz from source
to load
Current changing planes using two
capactiors
Day
3
Troubleshooting
radiated & conducted emissions
Electrostatic discharge
(ESD)
Case study and
validation of results
4.
The Workshop
Using
an example of a real life product and following typical design principles,
students will:
Develop a
block diagram
Determine
the product's EMC parameters
Using our
proprietary computer programs (a copy of which you will take
home) calculate the probable emissions characteristics of the:
a. circuit boards
b. power supply
c. I/O lines
d. enclosure
While meeting the
North American and European EMC regulations, students will design/analyze
a unit consisting of:
A motherboard
with microprocessor, clocks, digital inputs and outputs
A power supply
Cables with
and without shielding for the digital and analog inputs and outputs
An enclosure
An external
keyboard
An interface
to a video monitor
Students
will go through the product's requirements and calculate its estimated emissions
providing rationale for various decisions.
When
you leave this seminar/workshop, you should be ready to lead a design team
with a high degree of confidence that your products will meet their EMC
requirements.
Included
with the seminar/workshop:
A large workbook
of the slides used in class
Worksheets
to do the calculations
Computer software
to calculate harmonics emissions from PCB, cable emissions & cabinet
shielding
2 TextbooksDesign Techniques for Controlling Radiated Emissions - 2nd edition
and PCB Design for Real-World EMI Control
Specific sample
problems and calculations
Lunch each
day
What
to bring:
Your desire to
learn
Calculator
A laptop running
Word, Adobe Acrobat, Excel and a CD/DVD drive. (A laptop is useful,
but not required)