Variable Resistors & Potentiometers
Variable resistors / potentiometers are widely used for controls needed like volume controls as well as pre-setting adjustments on circuits.
Electronics Notes:
- providing clear & concise radio & electronics tutorials and notes for you to learn electronics online. Topics include: basic concepts, components, radio technology, constructional techniques, ham radio, & electronics history . . . . .
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Marconi's Magnetic Detector
The magnetic detector, often called Marconi's Magnetic Detector, was widely used in early wireless systems where it was far more sensitive and robust than the coherer. It performed well on ships, and was used for Marconi's first Transatlantic transmission. -
Superheterodyne Radio Receiver
The superheterodyne or superhet radio principle is the cornerstone of many radios, both domestic and commercial. Fin out how it works.
Electronics Notes Videos
What's on Electronics Notes:
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Basic concepts
Learn about the basic electronics concepts including voltage, current, resistance and many basic calculations. Tutorials written in an easy to understand manner. -
Testing & Test Equipment
Electronics Notes provides information about all aspects electronics testing, test methods, and test equipment including oscilloscopes, test meters, spectrum analyzers and all forms of test equipment. -
Electronic components
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.
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Radio
Radio 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+Radio. -
Ham radio
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. -
Constructional techniques
Anyone interested in electronics will want to build some equipment - making electronics projects is fascinating, instructive and fun. Learn about soldering and see our hints and tips for constructing electronic equipment - an essential skill for makers.
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Audio Visual
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.. -
Antennas and propagation
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. -
Becoming an Engineer
Electronics Notes provides a wealth of 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.
History More
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Morse Telegraph History
Morse keys, the Morse Code and the associated Morse telegraph system revolutionised communications and enabled messages to be sent almost anywhere very quickly. -
Alessandro Volta
Pioneer of electrical science who gave his name to the Volt.
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Andre-Marie Ampere
The man who gave his name to the Amp, the unit of electrical current.
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Thomas Alva Edison
The man, his inventions, and his invention factory.
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Michael Faraday
The Father of Electrical Engineering
