Clear summaries & information about electronics, radio and connectivity.

Ian Poole

Thank you for visiting Electronics Notes. On the site I aim to provide accessible summaries, information and notes covering many electronics topics including: electronics concepts, components, radio technology, manufacturing & constructional techniques, telecommunications & connectivity (mobile & wired), antenna technology & much more for those involved in electronics, radio, telecommunications and the associated industries.
Electronics Notes is written and run by Ian Poole

Electronics Notes Videos


Cost Effective Online Training

We have partnered with some of the leading online training brands to provide some very effective online training that will keep you up to date.   See more . . .


Latest Content

Random wire antenna Random Length Wire Antenna:   Random length wire antennas can be made from a scrap length of wire and installed in the space available and they can be used for short wave listening - .
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Low dropout linear voltage regulators Low Dropout Regulator, LDO Circuits:   Low dropout linear regulator circuits are used in many battery powered circuits to provide locally generated, clean voltage rails without dropping large voltages.
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LLM317 linear voltage regulator LM317 Linear Voltage Regulator Circuits:   The LM317 is a very convenient and easy to use linear voltage regulator which can be used in a variety of ways in different circuits.
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Morse code SOS distress message notation Morse Code SOS Message:   The familiar SOS message used in Morse code was the signal used for radio communications to indicate that a vessel or other vehicle was in imminent danger.
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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.


Becoming an Engineer

Electronic engineering can make a great career providing interest, challenges and good prospects
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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.

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History of Radio Timeline (Interactive)

Check out our interactive History of Radio Timeline. Please give it a try and see what you think.   See more . . .

Biography of Ambrose Fleming

A biography of Professor Sir John Ambrose Fleming who is remembered for his left hand motor rule, became the first professor of electrical engineering in Britain and invented the diode valve.

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Electronics Notes aims to provide accessible summaries about a host of electronics, radio and connectivity technologies. Our aim is to support those who want to learn about the technology: those who ware 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) though topics like electronic components, construction and manufacturing techniques to items such as antennas, radio propagation, wired and wireless connectivity including mobile communications 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.