Choosing the Best Flash Memory Card
Our useful guide gives the essential information that reveals what the different codes, specifications and markings mean so that you can select the right memory card for your needs.
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
I've just launched a new section on the website which provides data for a wide variety of discrete bipolar transistors - this will be expanded considerably over the coming months. Check it out and keep visiting!
Amplitude Modulation Primer
Amplitude modulation is used for long, medium and short wave broadcasting, and it forms a key element in other modulation schemes including SSB & QAM. Find out all you need to know
Voltage Controlled Oscillator Circuit Design
Find out all the key facts and factors needed to understand voltage controlled oscillators: operation; design considerations; varactor diodes; circuits . . .
Today's Selected Videos
Latest Videos
Video: Did You Know that Samuel Morse Lived in London
Video: Understanding Carbon Composition Resistors
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
Battery Corrosion: The Silent Enemy of Electrical Performance:
Corrosion associated with all forms of batteries can destroy not only the battery, but also the equipment around it, so its important to understand how it occurs, how to precent it, and perform remedial action when it has happened.
Read more . . . . .
Early Effect in Bipolar Transistors: A 101 Overview:
The Early Effect occurs in bipolar transistors and is the variation in the effective width of the base arising from changes in the base-to-collector voltage.
Read more . . . . .
How to Use Ferrite Rings to Cure Power Line Interference:
It's often possible to easily reduce or cure issues caused by interference carried along the power lines by using easy to obtain ferrite rings.
Read more . . . . .
History of Blackberry - Research in Motion, RIM:
For many years, a little known company called Research in Motion, RIM, lead the field introducing a type of moble phone that would lead to the smartphone of today.
Read more . . . . .
Cost Effective Online Training
We've partnered with some top training provides to offer you a great choice of training options wherever you may be. See more . . .
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.
