Electronics Notes by Ian Poole

The Iconic 2N3055 Power Transistor: the device that changed electronics This transistor was a major game changer - discover all about it in my video: youtu.be/AlKwDjhUxj8 #transistor #semiconductor

Electrolytic capacitors can have a bad name . . . but not if you use them correctly. Here is my quick resume of what they are, where they are used and my rules for ensuring they work well. Check out my YouTube video now: youtube.com/shorts/0RPNq... #capacitor #capacitors #electrolyticcapacitors

Understand Ceramic Capacitors Ceramic capacitors are used in vast quantities each year, but what exactly are they, and what do you need to know so you don't fall into any pitfalls. Check out my new video now: www.tiktok.com/@electronics...

Electrolytic capacitors: what you really need to know. Check out my video for a quick but interesting dive into electrolytic capacitors: vm.tiktok.com/ZN8SxfUyf/

The Secret Behind Transistor Gain. What does transistor gain actually mean? In this quick overview, I break down how a bipolar junction transistor acts as a current amplifier - taking a tiny base current and controlling a much larger collector current! Watch now: youtube.com/shorts/XCdll...

I’ve just set up a TikTok account, and I’m starting to post some short videos there. I’ll be posting short, engaging and informative videos about electronics and radio technology - may be a bit of amateur radio. Come and check out my channel - and please follow: www.tiktok.com/@Electronics...

Gold Conductor Myth: it isn’t the best conductor so why is it used? In this video I explain this mystery, I look at look at some key specifications so you don't fall into a trap, and I explode a myth. Watch my video now to find out all: youtu.be/TO3dyX9p3ck

Don't take life too seriously! So, I've been experimenting with some electronics related jokes. See what you think, & please leave a comment. You might hate it or love it. but whatever you think, my main focus remains electronics technology. Watch now: youtube.com/shorts/VZo7E...

In case you missed my post yesterday, check out my latest video. Don't Buy a Morse Key Until You See This: Xiegu VK6 Tested youtu.be/BMNEAx2D56M #hamradio #amateurradio #hsmr #morsekey #morsecode

Don't Buy a Morse Key Until You See This: Xiegu VK6 Tested. Have you ever wanted to buy a Morse key paddle, but not done so because of the price. In this video I take close look to see if it’s worth it. Watch my video now: youtu.be/BMNEAx2D56M #hamradio #hamr #amateurradio #Morsecode #Morsekey

What has a vintage capacitor & a modern SMT capacitor in common? What can an old 1920s capacitor show us about modern MLCCs? And what are the really important points to note to avoid a catastrophe with your new PCB design? Watch my video now: youtube.com/shorts/LVBBZ... #capacitors #mlcc

Why is gold used in so many connectors if it is not the best conductor? Find out in my website article : www.electronics-notes.com/articles/ele...

The SMD Sizing Trap That Breaks PCB Layouts Have you ever fallen into the trap where there are SMT components that have the label 0402, but they can be different sizes if they are defined in the imperial or metric systems. Find out more In my video: youtu.be/dbuZxl6MiCQ

Vanishing AM Radio: will you miss these iconic broadcasts. With medium wave broadcasts disappearing in many areas with people switching to VHF FM, digital radio & stereo, I take a nostalgic look back at these broadcasts. youtu.be/nxUIuEqrTgk #broadcasting #mediumwave

Bluetooth Frequency Hopping: the Tech that keeps you Connected. Watch my video to find out the really cunning technology used. Watch my video now: youtu.be/vyF9EVlVi8s #Bluetooth #bluetoothwireless #frequencyhopping #RFdesign #electronicsnotes

How many MLCCs are made each year - can you guess? The number will surprise you until you realise that they’re in virtually every piece of electronics today. Can guess, or better still watch my short video: youtube.com/shorts/U6zZC... #mlcc #capacitor #capacitors #electroniccomponents

Understanding PXI and Its Use For Test Instrumentation - Chassis, Controllers & Instrumentation. PXI is a great system that can be used for high performance testing and data collection. Discover what you need to know: youtu.be/k_JrU75M4s8 #PXI #test #electronics

Who remembers the pirate radio broadcast stations that were popular around the UK and other places in the 1960s? Discover more: www.electronics-notes.com/articles/his...

RESISTORS 101: the Mysteries Unveiled Check out the things you need to know about resistors. Watch now: youtu.be/ERce1gSIKmk

Is the TIDRADIO TD-H3 Better Than a Baofeng? I recently bought a TIDRADIO TD-H3 - it’s a great little radio: USB-C charging (& programming) bright display, and Bluetooth programming from your phone. A great radio - find out more: youtube.com/shorts/dH5MD...

Capacitor Secrets: What’s Happening Inside an MLCC MultiLayer Ceramic Capacitor All you need to know about multilayer ceramic capacitors and a few really surprising points you need to note. youtu.be/OLNRDQGwaBw #capacitors #electronicscomponents

Bluetooth Explained: How It Works to the Viking Connection We use Bluetooth connectivity everyday, but how exactly does it work. Also what are the Viking and Hollywood connections ? youtu.be/KOOXkRa3big #Bluetooth #electronics

Is the 2N2222 the most important transistor ever made? It isn’t the fastest, it’s certainly not the most powerful, and in an era of advanced MOSFETs and complex Integrated Circuits, how good really is it? Check out my video: youtu.be/GVhRl3gjUO0 #2N2222 #transistor #electronics

Was the Transistor Nearly Named the Iotatron? #transistorhistory #iotatron #techhistory youtube.com/shorts/zolY5...

KILL Power Line Interference with Clip-On Ferrite Rings Find out how in my video: youtu.be/rtMagMkEbK4

My Secret Method for Fixing Radios & Electronic Gadgets In this video I reveal my technique for fixing radios and other electronic gadgets that are brought to me for repair. Watch my video now: youtu.be/ixBuXeBe6Uw #radiorepairs #radioservicing #testingradios #gadgetrepairs #electronicsrepairs

Move Over UV-5R: There’s a New King of Budget Radios. Check out my video to find out more: youtube.com/shorts/vt1RZ... #hamradio #amateurradio

Wait... Xiegu made a Morse Key Check out this exciting Morse key as I unbox it. Find out more in my YouTube Short video: youtube.com/shorts/O7ci3... #morsekey #morsecode #hamradio #hamr #amateurradio

Understand the Ham Radio Baofeng UV-5R Controls Fast from My Video In this video I cover the basic controls of the Baofeng UV-5R amateur radio handheld transceiver. Check out my video now: youtube.com/shorts/-k13R...

What V/UHF Budget Hand Portable Transceiver would You Choose? Years ago there was just the Baofeng UV-5R - now there are others. Get all the information: www.electronics-notes.com/store-shop/h... #hamradio #hamr #amateurradio #handportable #electronicsnotes #electronics

Before Instant-On: The Hidden Physics of Vacuum Tubes (Valves) Check out my latest video: youtu.be/u_htxrYUIdw #valves #vacuumtubes #thermionicvalves #vintagetech #vintagetechnology #valves #vacuumtubes #vintagetech #vintagetechnology #electronicsnotes #electroniccomponents

Resistor Colour Codes 101 Do you ever get confused reading resistor colour codes. Check out more YouTube short video to find out more: youtube.com/shorts/A2nh4... #resistors #resistorcolorcode #resistorcolourcode #electronicsnotes #electroniccomponents #electronicsengineering

Explore the fascinating history of the Morse telegraph: how it started and revolutionised communication across the distances, linking continents via undersea cables, and served as a lifeline for global shipping. Check it out now: www.electronics-notes.com/articles/his... #morse #morsetelegraph

Want to understand about the different ceramic capacitor dielectrics? Check out my ‘Concise Guide to Ceramic Capacitors & Their Dielectrics’' Find out more: electronics-notes-shop.fourthwall.com/products/a-c... #electronics #capacitors #ceramiccapacitors #ebook #electroniccomponents

Op Amps:- Why Are They So Useful In this video I take a look at why operational amplifier, or op-amps are so great and so useful. Watch my video now: youtube.com/shorts/YY8IX... #opamps #operationalamplifiers #circuitdesign #analogdesign #hardwaredesign #electronicsnotes #electroniccomponents

MOSFET vs. IGBT – Understanding the Giants of Power Electronics IGBTs & MOSFETs are both big players in power electronics & these two types of device can be considered as rivals but it’s necessary to select the correct option for each circuit. Discover: www.electronics-notes.com/articles/ele...

Resistor Colour Code 101 - What You Need to Know In the video I provide all you need to know along with practical examples. Watch now: youtu.be/QhBJnPXN6L0 #resistors #colourcode #colorcode #resistorcolorcode #resistorcolourcode #electroniccomponents

They were trying to invent a field effect transit instead they invented the point contact transistor. It was a great Christmas present for the bosses at Bell Labs as it was demonstrated just before the the festive season. Find out more in my YouTube short video: youtube.com/shorts/D9olB...

'Skill Up for 2026' with My Amazing Value Technical Ebook Bundle. The bundle includes Guides to Operational Amplifiers; Superhet Radio, and Multimeters. These three popular ebooks are now offered with a saving of ~20%. Don't mss out: electronics-notes-shop.fourthwall.com/collections/...

RESISTORS 101: the Mysteries Unveiled Check out all you need to know about resistors in electronics in my latest video. Watch now: youtu.be/ERce1gSIKmk #resistors #resistors101 #resistorbasics #electronics #electroniccomponents

How the Vacuum Tube Created Modern Electronics A very brief introduction to how the vacuum tube / thermionic valve founded what we call electronics today. Watch now: youtube.com/shorts/SnZAs... #vacuumtube #thermionicvalve #vintageradio #techhistory #historyoftechnology #electronics

Why You NEED An Emitter Follower Check out my video now: youtu.be/fSki6td8L4c #electronics #circuitdesign #emitterfollower

Brilliant Morse Code Coffee Mug Featuring every letter of the alphabet clearly displayed with its Morse code equivalent, it's perfect for showing off your passion for radio and communication. Buy yours now: electronics-notes-shop.fourthwall.com/en-gbp/produ... #merch #coffeemug #morsecode

A Concise Guide to RF Attenuators and Their Design I've just launched the first of my 'Concise Guides.' At 5k words it looks at RF attenuators - the constant impedance Pi and T attenuators. Buy it now or check out more details: electronics-notes-shop.fourthwall.com/products/a-c...

Check out my ‘Guide to Superhet Radio Technology’ This book covers all the basic aspects of the superhet radio. To buy the book or find out more details: electronics-notes-shop.fourthwall.com/products/a-g...

Are SILICON CARBIDE Schottky Diodes Really So Great? Check out my video to find out what SiC Schottky diodes and and what their advantages really are. Watch my vide now: youtu.be/RWVpvi2tlcA #SiC #Siliconcarbide #Scottky #diodes #electrponiccomponents

Why Metal Film Resistors Have Inductance In this video I explain why these resistors have inductance and where they can be used. Check out the video now: youtu.be/XNyl0Pxas64 #resistors #inductance #metalfilm #electroniccomponents

Does the Beverage antenna have any uses these days, or is it obsolete? Find out more about the antenna, its advantages & if it has any uses today. Discover: www.electronics-notes.com/articles/ant... #antennas #hamradio #hamr #amateurradio

Exploring Electrolytic Capacitors - all the essential information Understand the essentials of electrolytic capacitors, discover their benefits & understand how they can be used to provide high levels of capacitance with high reliability. More: www.electronics-notes.com/articles/ele...

Understanding Transistor Current Gain Notations 101: beta, hfe hFE Check out my video now: youtu.be/DcfExBrI8Cw