Clear summaries & information about electronics, radio and connectivity
from electronics engineer, Ian Poole.

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

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Video: What's inside a Quartz Crystal Resonator

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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

Terminated long wire antenna Terminated Long Wire Antennas Directivity Explained:   Terminating the remote end of a wire antenna will result on the major lobes of radiation being directed towards the termination and those facing away are reduced.
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Analogue multimeter Analogue vs Digital Multimeter:   When it comes to choosing either an analogue or a digital multimeter, DMM, which is the best option - we explain all.
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List of major electronics parameters and units Basic units in electronics:   Understand the common units used in electronics from voltage, current, resistance and power on volts, amps, ohms and watts through capacitance in Farads, inductance in Henries, and charge in coulombs to energy and frequency.
    Read more . . . . .

OSI model or layers Introduction to the OSI Model:   Understand what the Open Systems Interconnection, OSI model used to provide an organised and standardised way for different areas of computer or embedded systems to communicate effectively and reliably.
    Read 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.


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 the Vacuum Tube

Read all about the history of the vacuum tube or thermionic valve: initial discoveries, Fleming\'s diode valve, de Forest\'s Audion, the directly and indirectly heated cathodes, . . their rise and fall.

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.