Electrical, Electronics and PCB Design Safety & Compliance

Learn the most important aspects and methods for designing safe electrical and electronics products and applications.
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  • Lectures 89
  • Length 3 hours
  • Skill Level Intermediate Level
  • Languages English
  • Includes Lifetime access
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    Available on iOS and Android
    Certificate of Completion
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About This Course

Published 5/2016 English

Course Description

Last Update:

******** October 10th, 2016 - Added a section on how to set and check clearance and creepage in a PCB Design CAD Software. Section name "PCB CAD/CAM SOFTWARE - CLEARANCE AND CREEPAGE"

******** Published in  May 1, 2016 ********


Being a capable electronics designer does not make you a good one. 

Being an expert in Arduino, Raspberry, firmware, embedded software and microcontrollers, hardware, PCB design, digital and analog design, is only a part of what designers need to know. 

A beautiful and functional product can be appealing, but if basic safety rules are not taken into account even before starting the actual  design activities, a poor design can endanger people and cause its designer big troubles

This course focuses on design safety with respect to electrical/electronics application, including PCB design. It covers the most important aspects that designers need to know, and it teaches a general methodology to develop electronics and electrical applications (including PCB) in compliance with safety principles and international standards.

+++++ Have a look at the course curriculum +++++

At the end of the course:

  • you will be able to find in international standards and understand the applicable electrical safety requirements for your electronics project
  • you will be able to calculate the most important parameters like clearance/creepage distance and solid insulation, to be considered during insulation, electronics and PCB design
  • you will be able to set and check creepage and clearance on PCB CAD/CAM Software
  • you will be able to choose the proper IP isolation against ingress of water and solid particles
  • you will be able to choose critical electronics components and verify their certifications
  • you will know what insulation diagrams are and how to make and use them
  • you will know what international standards are, how they are made and where you can find them
  • and you will understand the design process and steps toward a compliant product

so basically you will be able to design a functional, safe and ready for the market electrical application.

HAVE A LOOK AT THE LESSONS AVAILABLE FOR FREE IN THE COURSE CURRICULUM !!!

We will introduce the basic concepts and techniques of electrical, electronics and PCB design for safety, teaching you the path to a project compliant with product safety legislation.

We will cover both basic electrical definitions like the product classification and more advance concepts like creepage calculation and critical electronics components.

Throughout the course you will find practical examples on how to use these techniques on electrical and electronics household appliances design (e.g. food mixers and electric toasters), and also how to set some parameters in a CAD/CAM Software for PCB design.

We will take as a reference the most important and recognised international safety standards, like IEC 60335 series, IEC 60529, and the like.

The last section will be dedicated to describe the whole design process, from the design specifications to final verification and validation, with a practical example on an electric toaster design.

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The course is made essentially of video lessons, but reference to guidelines and datasheets are provided, when considered useful. 

You will also find several tests. We strongly recommend to take the tests before proceeding to check the concept you have learned. 

If you really want to understand the safety related part of an electrical/electronics and PCB design and complete your technical culture with this important cornerstone, this course is a must.

HAPPY LEARNING!!!

What are the requirements?

  • Students should already know basic electronics, e.g. basic components like capacitors, resistance and basic concept like currents, voltage, power.
  • It is not necessary knowledge on active components (e.g. operational amplifiers) or digital electronics (e.g. microcontrollers)
  • We will not talk about coding firmware

What am I going to get from this course?

  • Understand electrical product safety concepts, classifications and terminology
  • Understand the most important electrical safety requirements for an electrical/electronics product design project
  • Understand the concepts of clearance, creepage and solid insulation and be able to design the related safety measures
  • Understand the importance of critical components and be able to verify if such components are properly certified/approved. Examples with transformers and capacitors
  • Understand IP protection against ingress of water and solid parts and properly choose the best solution for a particular design
  • Be able to draw insulation diagrams, a very important tool for product development, in order to represent the insulation strategy and the product compliance
  • Be able to find and use technical international standards with respect to electrical products safety
  • Understand where the safety aspect learned in the course belong in the product design/development lifecycle
  • Examples with households appliances design
  • Properly set clerance and creepage values in PCB design CADs, like Eagle LAyour PCB Design software (contents applicable also to other CADs software)

What is the target audience?

  • This course is for student, professionals and hobbyist engaged with or interested in electrical/electronics design

What you get with this course?

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30 day money back guarantee.

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Certificate of completion.

Curriculum

Section 1: INTRODUCTION
COURSE INTRODUCTION
Preview
01:53
Section 2: GENERAL INTRODUCTION
SECTION INTRODUCTION AND EFFECT OF CURRENT AND ELECTRICAL MODEL OF HUMAN BODY
Preview
02:04
INSULATION (OR ISOLATION)
00:40
INTERNATIONAL STANDARDS
01:04
GENERAL SAFETY REQUIREMENT CLAUSE AND DOUBLE IMPROBABILITY & SECTION WRAP UP
Preview
02:10
Body Resistance
2 questions
Section 3: TYPES OF INSULATION
FUNCTIONAL INSULATION
01:24
BASIC INSULATION
00:29
SUPPLEMENTARY INSULATION
00:29
DOUBLE INSULATION
00:51
REINFORCED INSULATION & SECTION WRAP UP
00:55
Safe Products
2 questions
Section 4: PRODUCT CLASSIFICATION
SECTION INTRODUCTION, DEFINITION OF ACCESSIBLE & LIVE PARTS, SUPPLY CORDS
Preview
01:57
CLASS 0 PRODUCTS
00:38
CLASS I PRODUCTS
Preview
01:00
Class I
1 question
CLASS 0I PRODUCTS
00:31
CLASS II PRODUCTS
00:44
Class II
1 question
CLASS III (SELV) PRODUCTS
01:26
Class III
1 question
LABELS/SYMBOLS & SECTION WRAP UP
00:56
Section 5: EARTH CONNECTION
EARTH CONNECTION
03:35
Fuses
1 question
Wire colors
1 question
Section 6: ELECTRIC STRENGTH, INSULATION RESISTANCE, LEAKAGE & TOUCH CURRENTS
SECTION INTROUCTION AND ELECTRIC STRENGTH
Preview
02:40
INSULATION RESISTANCE AND LEAKAGE CURRENTS
00:50
TOUCH CURRENTS AND EARTH LEAKAGE CURRENTS
00:54
Touch currents and earth leakage currents
1 question
EXAMPLES & SECTION WRAP UP
01:09
Electric strength
1 question
Leakage currents
1 question
Section 7: CLEARANCE DISTANCE
SECTION INTRODUCTION, CLEARANCE AND PARAMETERS INFLUENCING IT
Preview
03:25
Clearance
1 question
POLLUTION DEGREES
01:14
Pollution degree
1 question
INSULATION CATEGORIES
00:25
ALTITUDE MULTIPLICATORS
00:30
OVERVOLTAGE CATEGORIES & SECTION WRAP UP
Preview
01:35
Overvoltage category
1 question
Section 8: CLEARANCE DISTANCE CALCULATION PROCEDURE
SECTION INTRODUCTION AND PRODUCT PROFILING
01:32
PRACTICAL EXAMPLE: PROFILING THE APPLICATION
Preview
01:28
CALCULATION PROCEDURE
00:38
PRACTICAL EXAMPLE: BASIC INSULATION
Preview
01:53
PRACTICAL EXAMPLE: SUPPLEMENTARY INSULATION
00:32
PRACTICAL EXAMPLE: REINFORCED INSULATION
00:36
OTHER STANDARDS AND SECTION WRAP UP
01:35
Clearance Calculation Exercise
1 question
Section 9: CREEPAGE DISTANCE
SECTION INTRODUCTION AND CREEPAGE DEFINITION
Preview
01:30
PARAMETERS INFLUENCING CREEPAGE
01:17
COMPARATIVE TRACKING INDEX (CTI)
Preview
01:52
Material group category from CTI
1 question
ENHANCED CREEPAGE
01:05
CREEPAGE FOR BASIC, SUPPLEMENTARY AND REINFORCED INSULATION
01:03
OTHER NOTES AND SECTION WRAP UP
01:01
Section 10: CREEPAGE DISTANCE CALCULATION PROCEDURE
SECTION INTRODUCTION AND PRACTICAL EXAMPLE: PRODUCT PROFILE
01:55
PRACTICAL EXAMPLE: MATERIAL GROUP CATEGORY FROM CTI
01:01
PRACTICAL EXAMPLE: CREEPAGE FOR REINFORCED INSULATION
00:43
EFFECTS OF BRIDGING COMPONENTS AND SECTION WRAP UP
01:22
Creepage Calculation Exercise
2 questions
Section 11: * New * PCB CAD/CAM SOFTWARE - CLEARANCE AND CREEPAGE
FOREWORD
Preview
Article
CAPTIONS
Preview
Article
SECTION INTRODUCTION
Preview
02:18
NET CLASSES AND CLEARANCE SETTINGS
Preview
01:18
DESIGN RULE CHECKER (DRC) AND CLEARANCE SETTINGS
06:24
ADDING A NEW NET CLASS & VERIFYING THE DRC
04:09
CONCLUSIONS AND SECTION WRAP UP
02:03
Clearance and creepage in Eagle CAD
3 questions
Section 12: SOLID INSULATION
SECTION INTRODUCTION AND SOLID INSULATION
02:17
WORKING VOLTAGE
Preview
01:19
MATERIAL PROPERTIES AND OFF-THE-SHELF ENCLOSURES
02:07
CUSTOM ENCLOSURES/BARRIERS AND SECTION WRAP UP
03:08
Supplementary insulation by solid barriers
1 question
Reinforced insulation by solid barriers
2 questions
Section 13: INSULATION DIAGRAMS
SECTION INTRODUCTION AND INSULATION DIAGRAMS
Preview
01:59
ACRONYMS AND CLASS I EXAMPLE
05:35
EXAMPLES: CLASS II & SOLID INSULATION
Preview
01:55
EXAMPLE: CLASS II & REINFORCED INSULATION
00:20
EXAMPLE: CLASS II WITH SECONDARY CIRCUIT
02:00
MEDICAL DEVICES INSULATION DIAGRAMS AND SECTION WRAP UP
01:39
Insulation Diagrams
1 question
Section 14: SAFETY CRITICAL COMPONENTS
SECTION INTRODUCTION, CRITICAL & BRIDGING COMPONENTS
Preview
04:21
APPROVED COMPONENTS
01:23
US APPROVED COMPONENTS
Preview
03:50
EU APPROVED COMPONENTS
04:48
Markings
2 questions

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Instructor Biography

Marco CATANOSSI, Chartered Engineer - MSc

Marco Catanossi lives and works in Italy. He has a MSc in electronics engineering and he is an expert in product safety and certifications, helping many companies from different countries to successfully put their product on the market. The Author has also experience as assessors on product safety on behalf of the Court of Justice and he is member of the European Union engineering panel for innovation projects evaluation. Since 2008, Marco has built a consulting business helping manufacturers from different fields (from medical devices to toys and garments) to meet regulatory and technical requirements worldwide. He is a dedicated professional with a high specialization in products safety (including electrical/electronics), a deep insight in product liability and a strong practical approach to product engineering and design.

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