Phase Locked Loop Primer
Find out all about phase locked loops: the way they work; phase detectors; VCOs; loop filters; operation, and all the key details you need to know.
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
FET Field Effect Transistor: the basics
Discover what field effect transistors, FETs are; how they work; the technology behind them; and where they are used.
Transistor Current Limiter & Foldback Limiter Circuits
Current limiter techniques and circuits are essential in any power supply to prevent damage to the power supply and the circuit being power. Circuits can be simple using diodes and transistors.
Today's Selected Videos
Latest Videos
Video: The Iconic British Red Telephone Call Box
Video: Radio Antenna Theory 101
I am developing a growing series of electronics infographics to explain and summaries topics on a single sheet. See more . . .
Latest Content
Digital to Analogue Converter DAC 101:
Digital to Analogue Converters, DACs, D2A or D-to-A converters enable waveforms in the digital domain to be converted into the analogue domain - find out all about them.
Read more . . . . .
Analog-to-Digital Converters, ADCs 101:
Analogue or analog to digital converters bridge the gap between the analogue and digital worlds converting continuously varying analogue voltages to a stream of digital words - discover how they work.
Read more . . . . .
Understanding Triple Balanced Mixers:
Triple balanced RF mixers are used where the very top levels of performance are needed, but they are more complicated than double and single balanced mixers.
Read more . . . . .
The Iconic British Red Telephone Box:
The red telephone box has been a part of British life for very many years, and now as the need for them falls, they are being used for many other purposes.
Read more . . . . .
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 . . .
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.
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.
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.
