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


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Featured article

History of the Phototransistor:   We often take the components that we use in our circuit designs for granted, not realising the development that went into making the first devices. It is interesting to see how the phototransistor came about and was developed to the standard we see today.
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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.



  • Learn about antennas with our detailed notes, descriptions, summaries of antennas, what they are, how they work, antenna designs and also radio propagation - how radio signals travel.
  • This section of Electronics Notes gives descriptions, summaries and tutorials about AV, Audio Visual topics from television to Hi-Fi and systems and from the interface standards like SCART, HDMI and the like to descriptions of loudspeakers, etc.
  • Learn about the basic electronics concepts including voltage, current, resistance and many basic calculations. Aimed at people entering electronics as well as STEM applications.
  • Career and job information for those interested in becoming an electronics engineer. Everything from what an electronics engineer may do, through to applying for a job, writing a CV and much more.
  • Tutorials and learning guides for electronic circuit design techniques for everthing from bipolar transistors and FETs to operational amplifiers, power supplies and much more.
  • Electronics Notes provides tutorials and information on many electronic components found in electronic circuits ranging from resistors and capacitors through simple semiconductors to complete integrated circuits. Introductions to in-depth information.
  • Tutorials and learning guides about connectivity for both wired and wireless communications: broadband, Wi-Fi, Bluetooth, mobile communications, 2G, 3G, 4G, 5G and many more forms of communication are all widely used.
  • Whether at home or for a large manufacturing organisation with PCB assembly, etc, one of the key challenges is in building or manufacturing the electronic circuits.
  • Electronics Notes provides the tutorials and the basic information you need to know to get started and learn about the fascinating hobby of amateur radio from operating, Morse code and DXing through to summaries of the ham radio allocations.
  • Radio & RF technology is being used increasingly within everyday life. From broadcast radio and cellular phones to Wi-Fi and other wireless technologies it is widely used. Find out all you need to learn about radio and radio circuits on Electronics Notes.
  • The history of how the technolgy we know came about can be very interesting and instructive. Eveything from the very basic concepts of electronics from Ohm's Law and current through the telegraph, radios, & telecommunications, to current day mobile phone technology.
  • Test equipment and test methods are essential for electronics design. Read our tutorials and learn


Technology history topics

Discover some of the stories that detail how the foundations were set in place for today's technology.





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