How Does an LED Work
Understand how an LED works with this complete yet understandable explanation of the operation of an LED.
Clear summaries & information about electronics, radio and connectivity
from electronics engineer, Ian Poole.
from electronics engineer, Ian Poole.
Thank you for visiting Electronics Notes. On the site I aim to provide accessible summaries, and information with a minimum of jargon covering many electronics engineering topics. All the topics are manually written by myself and the aim is to provide useful information that is easy to understand and to include many hints, tips & practical guidance notes using my experience from my many years as an electronics engineer.
Electronics Notes is written and run by Ian Poole
The Electronics Notes, Electronics Ephemera is my new online shop. In it I provide everything from mugs, coasters and mouse mats to tee shirts, hoodies and a huge amount more. Check it out and keep visiting!
Understanding Capacitor Smoothing in Power Supplies
Reservoir capacitors are used to smooth the raw rectified waveform in a power supply - it is important to chose the right capacitor with the correct value and ripple current rating.
What is Electrostatic Discharge - ESD?
Electrostatic Discharge, ESD is very important in today's electronics. Small static discharges can damage and cause modern electronic components and boards to fail. Find out all you need to know.
Today's Selected Videos
Latest Videos
Video: STOP Emitter Follower Circuits From Oscillating
Video: KILL Power Line Interference with Clip-On Ferrite Rings
I've recently been developing an Amazon.com Storefront to complement the pages on the website. Although I gain a commission that helps keep the website going, there is no additional cost to you. Check it out regularly as I'm always updating it. See more . . .
Latest Content
An In-Depth Look at Electrical Fuses:
They may seem as old as the hills, but fuses still play a huge role in providing protection and safety in modern electrical and electronic equipment.
Read more . . . . .
Understanding Ultra-wideband-UWB: a basic 101 introduction:
Ultra-wideband, UWB has been in existence for many years, but it is now coming to the fore to be used in many types of application including automotive technology and other areas where proximity sensing is needed.
Read more . . . . .
Active vs. Passive RF Mixers - Weighing the Trade-offs in Frequency Conversion:
One of the main choices to make when selecting an RF mixer (frequency mixer) for a design is whether to use an active or passive type: I look at the differences, their advantages & disadvantages.
Read more . . . . .
I've just launched a new section on the website which provides data for various components. There is the component data along with distributor stock levels and links to their sites. I'll be considerably expanding this over the coming weeks and months. Check it out and keep visiting!
What's on ElectronicsNotes:
There is a huge variety of information on ElectronicsNotes ranging from the basic concepts through to 5G and more. Everything from electronic components, circuit designs, connectivity with everything from wired technologies like Ethernet, RS2432 and more to wireless technologies including mobile communications, Wi-Fi, IoT communications as well as radio and RF design antennas, and a host of other topics.
Find out all the information you need to know using our easily understood explanations.
Antennas & propagation
Antenna types, feeders & radio propagation
Audio-visual
Loudspeakers, microphones, HDMI, SCART, & much more
Basic concepts
Resistance, Ohm's law, capacitance to more advanced topics
Careers
Career advice, interviews, & becoming an engineer
Circuit Design
Circuits and their circuit design methodologies & details
Components
Electronic components including passive, active & ICs, etc
Connectivity
All forms of wired & wireless communications
Construction & manufacturing
Soldering (manual & automated) assembly,ESD precautions, etc
Eco / Green Engineering
Energy saving, green energy, green electronics
Radio & RF
Modulation, RF building blocks mixing, hybrids & more
Satellites
Satellites & satellite technology
Test Methods
Test equipment, technologies & test methods
Electronic engineering can make a great career providing interest, challenges and good prospects
Read more . . .
Technology history
Discover some of the stories that detail how the foundations were set in place for today's technology.
We have a large number of pages devoted to pioneers, how technology was invented and developed as well as descriptions of many types of radio receiver, etc, etc.
The National HRO - WW2 communications receiver
The National HRO is a vintage radio communications receiver that was introduced in 1935 and became a classic HF radio that performed well in WW2 and was widely available in the surplus equipment markets for many years.
Electronics Notes aims to provide accessible summaries about a host of electronics, radio and connectivity technologies in a practical and useful way.
Our aim is to support those who want to learn about the technology: those who are established engineers as well as students and hobbyists.
The topics included in the site range from the basic electronics concepts (useful for established engineers as well looking for those equations, formulas etc, including topics like basic electronics concepts, component descriptions and explanations, circuit designs and circuit design principals, manufacturing techniques, radio technology & RF design and wired and wireless connectivity and a host of other topics.
To fund the running of the site, we obviously need to carry advertising, but we aim to make this not too intrusive. We hope you understand, but we need to have income to meet the not inconsiderable running costs.
