Electronics Notes by Ian Poole
@elecnotes.bsky.social
My aim is to provide clear summaries & information about electronics, radio & connectivity.
I’ve had a fantastic career in electronics - now I’d like to help others into it.
Website: https://www.electronics-notes.com
#electronics #RFdesign #antennas
I’ve had a fantastic career in electronics - now I’d like to help others into it.
Website: https://www.electronics-notes.com
#electronics #RFdesign #antennas
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...
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...
A Concise Guide to RF Attenuators and Their Design
This PDF download covers the basic aspects of constant impedance Pi and T RF attenuators and their design.
RF attenuators are used in many areas of electronics and in particular within RF design where...
electronics-notes-shop.fourthwall.com
December 15, 2025 at 8:37 AM
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...
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...
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...
A Guide to Superhet Radio Technology
This book covers all the basic aspects of the superhet radio. The aim was to provide all the essential elements of the superheterodyne radio in one volume, explaining the background, the basic concept...
electronics-notes-shop.fourthwall.com
December 13, 2025 at 5:38 PM
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...
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
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 are Silicon CARBIDE Schottky diodes so great?
YouTube video by ElectronicsNotes
youtu.be
December 9, 2025 at 9:50 AM
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
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
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
December 5, 2025 at 8:59 AM
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
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
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
December 4, 2025 at 12:09 AM
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
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...
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...
December 1, 2025 at 3:16 PM
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...
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
Check out my video now: youtu.be/DcfExBrI8Cw
November 29, 2025 at 6:08 PM
Understanding Transistor Current Gain Notations 101: beta, hfe hFE
Check out my video now: youtu.be/DcfExBrI8Cw
Check out my video now: youtu.be/DcfExBrI8Cw
Why the OC71 Transistor is a Big Deal
This transistor was an iconic electronic component of the 1960s.
Find out all about it in my video: youtube.com/shorts/AHCmo...
#OC71 #transistor #vintageradio #electroniccomponents #techhistory #historyoftechnology
This transistor was an iconic electronic component of the 1960s.
Find out all about it in my video: youtube.com/shorts/AHCmo...
#OC71 #transistor #vintageradio #electroniccomponents #techhistory #historyoftechnology
November 25, 2025 at 3:01 PM
Why the OC71 Transistor is a Big Deal
This transistor was an iconic electronic component of the 1960s.
Find out all about it in my video: youtube.com/shorts/AHCmo...
#OC71 #transistor #vintageradio #electroniccomponents #techhistory #historyoftechnology
This transistor was an iconic electronic component of the 1960s.
Find out all about it in my video: youtube.com/shorts/AHCmo...
#OC71 #transistor #vintageradio #electroniccomponents #techhistory #historyoftechnology
1N5822 Schottky Diode
I’ve just released the YouTube Short version of my 1N5822 video.
In this short I provide some of the basic details of this popular diode.
Check out the video now: youtube.com/shorts/AzRTi...
I’ve just released the YouTube Short version of my 1N5822 video.
In this short I provide some of the basic details of this popular diode.
Check out the video now: youtube.com/shorts/AzRTi...
November 18, 2025 at 12:13 PM
1N5822 Schottky Diode
I’ve just released the YouTube Short version of my 1N5822 video.
In this short I provide some of the basic details of this popular diode.
Check out the video now: youtube.com/shorts/AzRTi...
I’ve just released the YouTube Short version of my 1N5822 video.
In this short I provide some of the basic details of this popular diode.
Check out the video now: youtube.com/shorts/AzRTi...
How to Clean Away Battery Corrosion and Get Gadgets Working Again
In this video I show you how I cleaned up an old battery powered clock where the battery had leaked and brought it back to life.
Check out the video now: youtu.be/JXIT_CWEmN8
In this video I show you how I cleaned up an old battery powered clock where the battery had leaked and brought it back to life.
Check out the video now: youtu.be/JXIT_CWEmN8
November 11, 2025 at 10:43 AM
How to Clean Away Battery Corrosion and Get Gadgets Working Again
In this video I show you how I cleaned up an old battery powered clock where the battery had leaked and brought it back to life.
Check out the video now: youtu.be/JXIT_CWEmN8
In this video I show you how I cleaned up an old battery powered clock where the battery had leaked and brought it back to life.
Check out the video now: youtu.be/JXIT_CWEmN8
Understanding how the Superhet / Superheterodyne Radio Works
Check out my video to gain a good understanding.
Watch now: youtu.be/dk6DdG4vs4Y
#superhet #superheterodyne #radio #amateurradio #hamradio #hamr
Check out my video to gain a good understanding.
Watch now: youtu.be/dk6DdG4vs4Y
#superhet #superheterodyne #radio #amateurradio #hamradio #hamr
November 9, 2025 at 7:55 AM
Understanding how the Superhet / Superheterodyne Radio Works
Check out my video to gain a good understanding.
Watch now: youtu.be/dk6DdG4vs4Y
#superhet #superheterodyne #radio #amateurradio #hamradio #hamr
Check out my video to gain a good understanding.
Watch now: youtu.be/dk6DdG4vs4Y
#superhet #superheterodyne #radio #amateurradio #hamradio #hamr
CAPACITORS 101: the Mysteries Unravelled
In my YouTube short I give a quick overview of capacitors and what they are.
It’s a great introduction to find out what they are with a link to a longer form video.
Check out my video now: youtube.com/shorts/UC_7g...
In my YouTube short I give a quick overview of capacitors and what they are.
It’s a great introduction to find out what they are with a link to a longer form video.
Check out my video now: youtube.com/shorts/UC_7g...
November 4, 2025 at 9:57 AM
CAPACITORS 101: the Mysteries Unravelled
In my YouTube short I give a quick overview of capacitors and what they are.
It’s a great introduction to find out what they are with a link to a longer form video.
Check out my video now: youtube.com/shorts/UC_7g...
In my YouTube short I give a quick overview of capacitors and what they are.
It’s a great introduction to find out what they are with a link to a longer form video.
Check out my video now: youtube.com/shorts/UC_7g...
I've just launched a new vintage valve / vacuum tube T-shirt on my online shop.
This truly unique T-shirt shows some vintage valves or vacuum tubes from the first half of the 20th century.
Check out more details on my online shop: electronics-notes-shop.fourthwall.com/products/vin...
This truly unique T-shirt shows some vintage valves or vacuum tubes from the first half of the 20th century.
Check out more details on my online shop: electronics-notes-shop.fourthwall.com/products/vin...
Vintage Tech Reigns Vacuum Tube / Valve T-Shirt
This truly unique T-shirt shows some vintage valves or vacuum tubes from the first half of the 20th century.
You can show off your interest in technology with this T-shirt that has been designed using...
electronics-notes-shop.fourthwall.com
October 13, 2025 at 10:30 AM
I've just launched a new vintage valve / vacuum tube T-shirt on my online shop.
This truly unique T-shirt shows some vintage valves or vacuum tubes from the first half of the 20th century.
Check out more details on my online shop: electronics-notes-shop.fourthwall.com/products/vin...
This truly unique T-shirt shows some vintage valves or vacuum tubes from the first half of the 20th century.
Check out more details on my online shop: electronics-notes-shop.fourthwall.com/products/vin...
Discover My Amazingly Useful Op-Amp Circuits Mouse Mat
Check out this incredibly useful mouse mat from my online shop in this video.
youtube.com/shorts/xAe2w...
Check out this incredibly useful mouse mat from my online shop in this video.
youtube.com/shorts/xAe2w...
Discover My Amazingly Useful Op-Amp Circuits Mouse Mat
YouTube video by ElectronicsNotes
youtube.com
October 7, 2025 at 8:57 AM
Discover My Amazingly Useful Op-Amp Circuits Mouse Mat
Check out this incredibly useful mouse mat from my online shop in this video.
youtube.com/shorts/xAe2w...
Check out this incredibly useful mouse mat from my online shop in this video.
youtube.com/shorts/xAe2w...
1N5822: An Amazing Schottky Diode You Must Discover
In this video, I explore the properties, characteristics, and applications of the 1N5822 Schottky Diode, including its high current capacity, low forward voltage drop, and fast switching times.
Watch now: youtu.be/SurpzglsZ78
#1N5822 #Schottky
In this video, I explore the properties, characteristics, and applications of the 1N5822 Schottky Diode, including its high current capacity, low forward voltage drop, and fast switching times.
Watch now: youtu.be/SurpzglsZ78
#1N5822 #Schottky
1N5822: An Amazing Schottky Diode You Must Discover
YouTube video by ElectronicsNotes
youtu.be
September 30, 2025 at 9:25 AM
1N5822: An Amazing Schottky Diode You Must Discover
In this video, I explore the properties, characteristics, and applications of the 1N5822 Schottky Diode, including its high current capacity, low forward voltage drop, and fast switching times.
Watch now: youtu.be/SurpzglsZ78
#1N5822 #Schottky
In this video, I explore the properties, characteristics, and applications of the 1N5822 Schottky Diode, including its high current capacity, low forward voltage drop, and fast switching times.
Watch now: youtu.be/SurpzglsZ78
#1N5822 #Schottky
Transistor Circuit Configurations Infographic: common base, collector & emitter
Check out this infographic now: www.electronics-notes.com/articles/sum...
#transistor #circuitdesign #commonemitter #emitterfollower, #commoncollector #commonbase #electroniccomponents
Check out this infographic now: www.electronics-notes.com/articles/sum...
#transistor #circuitdesign #commonemitter #emitterfollower, #commoncollector #commonbase #electroniccomponents
September 29, 2025 at 2:00 PM
Transistor Circuit Configurations Infographic: common base, collector & emitter
Check out this infographic now: www.electronics-notes.com/articles/sum...
#transistor #circuitdesign #commonemitter #emitterfollower, #commoncollector #commonbase #electroniccomponents
Check out this infographic now: www.electronics-notes.com/articles/sum...
#transistor #circuitdesign #commonemitter #emitterfollower, #commoncollector #commonbase #electroniccomponents
I'm delighted to say that my YouTube channel has just gone through the 55k subscribers barrier.
Check out my channel now: www.youtube.com/@Electronics...
#electroniccomponents #youtube #videos
Check out my channel now: www.youtube.com/@Electronics...
#electroniccomponents #youtube #videos
September 29, 2025 at 8:38 AM
I'm delighted to say that my YouTube channel has just gone through the 55k subscribers barrier.
Check out my channel now: www.youtube.com/@Electronics...
#electroniccomponents #youtube #videos
Check out my channel now: www.youtube.com/@Electronics...
#electroniccomponents #youtube #videos
A Guide to Superhet Radio Technology - ebook
This book covers all the basic aspects of the superhet radio - discover all the contents in the description.
Check it out &buy it now: electronics-notes-shop.fourthwall.com/products/a-g...
#superhet #superheterodyne #radio #technology #RFdesign
This book covers all the basic aspects of the superhet radio - discover all the contents in the description.
Check it out &buy it now: electronics-notes-shop.fourthwall.com/products/a-g...
#superhet #superheterodyne #radio #technology #RFdesign
A Guide to Superhet Radio Technology
This book covers all the basic aspects of the superhet radio. The aim was to provide all the essential elements of the superheterodyne radio in one volume, explaining the background, the basic concept...
electronics-notes-shop.fourthwall.com
September 20, 2025 at 8:51 AM
A Guide to Superhet Radio Technology - ebook
This book covers all the basic aspects of the superhet radio - discover all the contents in the description.
Check it out &buy it now: electronics-notes-shop.fourthwall.com/products/a-g...
#superhet #superheterodyne #radio #technology #RFdesign
This book covers all the basic aspects of the superhet radio - discover all the contents in the description.
Check it out &buy it now: electronics-notes-shop.fourthwall.com/products/a-g...
#superhet #superheterodyne #radio #technology #RFdesign
Schottky DIODES: What You Really Need to Know!
Learn about the capabilities of Schottky diodes and what makes them such useful electronic components for today's electronics scene.
Check out the video: youtu.be/JBmSv2kitWM
#Schottky #Schottkydiodes #diodes #semiconductors #electroniccomponents
Learn about the capabilities of Schottky diodes and what makes them such useful electronic components for today's electronics scene.
Check out the video: youtu.be/JBmSv2kitWM
#Schottky #Schottkydiodes #diodes #semiconductors #electroniccomponents
Schottky DIODES: What You Really Need to Know!
YouTube video by ElectronicsNotes
youtu.be
September 16, 2025 at 8:50 AM
Schottky DIODES: What You Really Need to Know!
Learn about the capabilities of Schottky diodes and what makes them such useful electronic components for today's electronics scene.
Check out the video: youtu.be/JBmSv2kitWM
#Schottky #Schottkydiodes #diodes #semiconductors #electroniccomponents
Learn about the capabilities of Schottky diodes and what makes them such useful electronic components for today's electronics scene.
Check out the video: youtu.be/JBmSv2kitWM
#Schottky #Schottkydiodes #diodes #semiconductors #electroniccomponents
The Early Effect in Bipolar Transistors: A 101 Overview
The Early effect in transistors is not often thought of, but it can have a major impact on bipolar transistor performance.
Discover more: www.electronics-notes.com/articles/ele...
#earlyeffect #transistors #electroniccomponents
The Early effect in transistors is not often thought of, but it can have a major impact on bipolar transistor performance.
Discover more: www.electronics-notes.com/articles/ele...
#earlyeffect #transistors #electroniccomponents
September 16, 2025 at 6:26 AM
The Early Effect in Bipolar Transistors: A 101 Overview
The Early effect in transistors is not often thought of, but it can have a major impact on bipolar transistor performance.
Discover more: www.electronics-notes.com/articles/ele...
#earlyeffect #transistors #electroniccomponents
The Early effect in transistors is not often thought of, but it can have a major impact on bipolar transistor performance.
Discover more: www.electronics-notes.com/articles/ele...
#earlyeffect #transistors #electroniccomponents
Operational Amplifier Circuits Mouse Mat
One of the latest additions to my online shop is a mouse mat featuring nine popular op-amp circuits along with their key design equations.
Check it out now: electronics-notes-shop.fourthwall.com/products/ope...
One of the latest additions to my online shop is a mouse mat featuring nine popular op-amp circuits along with their key design equations.
Check it out now: electronics-notes-shop.fourthwall.com/products/ope...
Operational Amplifier Circuits Mouse Mat
This mouse mat shows a variety of essential operational amplifier (op-amp) circuits with their design equations.
This mouse matis ideal for anyone designing with op-amps as it gives a quick reference ...
electronics-notes-shop.fourthwall.com
September 15, 2025 at 9:00 AM
Operational Amplifier Circuits Mouse Mat
One of the latest additions to my online shop is a mouse mat featuring nine popular op-amp circuits along with their key design equations.
Check it out now: electronics-notes-shop.fourthwall.com/products/ope...
One of the latest additions to my online shop is a mouse mat featuring nine popular op-amp circuits along with their key design equations.
Check it out now: electronics-notes-shop.fourthwall.com/products/ope...
Gallium Nitride GaN FETs & HEMTs: what they are & how they work.
Did you know that GaN FETs use a 2D electron gas, 2DEG as the basis of their operation. Effectively the GaNFET is a HEMT.
Discover the full story: www.electronics-notes.com/articles/ele...
Did you know that GaN FETs use a 2D electron gas, 2DEG as the basis of their operation. Effectively the GaNFET is a HEMT.
Discover the full story: www.electronics-notes.com/articles/ele...
September 15, 2025 at 6:24 AM
Gallium Nitride GaN FETs & HEMTs: what they are & how they work.
Did you know that GaN FETs use a 2D electron gas, 2DEG as the basis of their operation. Effectively the GaNFET is a HEMT.
Discover the full story: www.electronics-notes.com/articles/ele...
Did you know that GaN FETs use a 2D electron gas, 2DEG as the basis of their operation. Effectively the GaNFET is a HEMT.
Discover the full story: www.electronics-notes.com/articles/ele...
Who Knows what a BARITT Diode is?
The BARITT diode Barrier Injection Transit Time diode is a device used for generating microwave signals from a single diode.
Find out more: www.electronics-notes.com/articles/ele...
#BARITT #diode #microwaves #microwavediode
The BARITT diode Barrier Injection Transit Time diode is a device used for generating microwave signals from a single diode.
Find out more: www.electronics-notes.com/articles/ele...
#BARITT #diode #microwaves #microwavediode
September 14, 2025 at 6:47 AM
Who Knows what a BARITT Diode is?
The BARITT diode Barrier Injection Transit Time diode is a device used for generating microwave signals from a single diode.
Find out more: www.electronics-notes.com/articles/ele...
#BARITT #diode #microwaves #microwavediode
The BARITT diode Barrier Injection Transit Time diode is a device used for generating microwave signals from a single diode.
Find out more: www.electronics-notes.com/articles/ele...
#BARITT #diode #microwaves #microwavediode
Op-amp Mugs Amplify the Potential of Your Coffee Break
I've launched a series of three coffee mugs with the essential op-amp circuits on them. Each mug has two circuits, one on each side.
Check out my video for more information: youtube.com/shorts/WzbWG...
I've launched a series of three coffee mugs with the essential op-amp circuits on them. Each mug has two circuits, one on each side.
Check out my video for more information: youtube.com/shorts/WzbWG...
September 9, 2025 at 10:36 AM
Op-amp Mugs Amplify the Potential of Your Coffee Break
I've launched a series of three coffee mugs with the essential op-amp circuits on them. Each mug has two circuits, one on each side.
Check out my video for more information: youtube.com/shorts/WzbWG...
I've launched a series of three coffee mugs with the essential op-amp circuits on them. Each mug has two circuits, one on each side.
Check out my video for more information: youtube.com/shorts/WzbWG...
What Makes IQD IQXC-240 Quartz Crystal Resonators So Great?
In this video I take a look at this amazing but very small quartz crystal resonator.
youtube.com/shorts/3Ulgl...
In this video I take a look at this amazing but very small quartz crystal resonator.
youtube.com/shorts/3Ulgl...
September 1, 2025 at 9:14 AM
What Makes IQD IQXC-240 Quartz Crystal Resonators So Great?
In this video I take a look at this amazing but very small quartz crystal resonator.
youtube.com/shorts/3Ulgl...
In this video I take a look at this amazing but very small quartz crystal resonator.
youtube.com/shorts/3Ulgl...