Easy to breadboard and experiment with, very few parts, and super versatile, are just some of the perks of this circuit. Learn about gate capacitance, dead time, and much more. A great circuit for old car radios too. Enjoy!
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2026-01-16 20:52:12 +0000 UTC View Post
Here is a very simple, low noise, Microvolt level, small signal amplifier for all your testing and small signal amplifier needs. Great for low output phono cartridges, low output mic cartridges, or troubleshooting low level audio stages. A fantastic versatile circuit that operates over a wide range of supply voltages with no bias adjustments! Files below. Enjoy.
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2026-01-03 02:07:12 +0000 UTC View Post
It's so simple, and it works with so many different J-FET's! Use this circuit to add gain to may of your different projects, or to just learn more about these fantastic little devices. Schematic attachment below this video, (and available by direct-email as well.) Enjoy!
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2025-12-16 16:51:09 +0000 UTC View Post
Are you considered the hardest person "in the world" to shop for... This might help! These are fantastic tools for the bench that make great gift ideas for either you or your friends.
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The forum is Live! Here is the link: 2025-12-03 09:29:08 +0000 UTC View Post
Use these to make prototyping easier! Here are 3 common tube breakout boards, and a fourth is coming, (The 9 Pin Version.) Also: Some news about a possible project box idea for the Add-A-Cap project, leave your feedback on that below. Enjoy!
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2025-11-16 10:08:28 +0000 UTC View Post
Breakout boards to make SMD work easy. Use the layout for solder practice and checking your printer margins as well. A great little op-amp that will be used in future projects and more! Enjoy.
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2025-11-03 18:24:28 +0000 UTC View Post
Here is the current sense circuit for the Carlson Add-A-Cap project. This will sense current down to 10μA (microamps), and can be modified for reading other ranges as well! Below are 5 file attachments, including the PCB Layout, component layout map, schematic, test and verification guide, and parts list. Enjoy the build!
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2025-10-17 15:28:25 +0000 UTC View Post
Super useful tester for any bench! Build this tester to test all sorts of crystals, fundamental and overtone types alike. The best part... Build it with "junk box parts!" Use what you have, it's a very friendly circuit to build and work with. PCB layout and Component Map below as attachments, see video for more details. Enjoy!
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2025-10-03 06:52:49 +0000 UTC View Post
Another very beneficial tester for the bench! The crystal tester works with fundamental and overtone crystals alike. Use this circuit to test all sorts of different crystals! See video for the schematic. Enjoy!
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2025-09-17 03:16:53 +0000 UTC View Post
The new Carlson Add-A-Cap circuit works fantastic! See the sensitivity, and how easily it integrates into a repair or troubleshooting procedure.
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The forum is Live! Here is the link: 2025-09-03 10:21:23 +0000 UTC View Post
See the block diagram "flow chart" of the new capacitor circuit with description. Also: Some great "cheap" soldering tools that won't break your wallet... and more!
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The forum is Live! Here is the link: 2025-08-17 02:19:29 +0000 UTC View Post
A very neat circuit is being developed to help with circuit troubleshooting, here are the details!! Enjoy!
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2025-08-03 00:58:59 +0000 UTC View Post
Oh NO! Did that trace lift or completely come off your circuit board? Did you pull a VIA or plated Thru-Hole out of your circuit board? Here are some easy TIPS will save your day. Some great TIPS for soldering oxidized component leads too! Lot's of great info in this video for all experience levels. Enjoy!
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2025-07-17 02:28:08 +0000 UTC View Post
Don't (((ZAP))) those FET's. Here are some Electronic Bench Tips that will help with "ESD" or "Electrostatic Discharge" considerations. A Steady Hand - See how easy it is to solder SMD components even if your hands shake, use this method for easy soldering. Enjoy!
If you are enjoying these videos and the shared circuits, you can let me know by tapping the heart symbol below. 2025-07-03 12:41:22 +0000 UTC View Post
Increase your understanding in so many areas of electronics with just one video! In this video, I explain oscillators, Astable multivibrators, Bistable multivibrators, see how they do math (Division) IE: 1-2-4-8-16-32-ETC.... I explain Binary (ones and zeros,) and Binary Coded Decimal or (BCD) to decimal decoders. See and understand how they work in your computer. See how a rectification circui...
2025-06-17 01:13:26 +0000 UTC View Post
Learn how a single and dual Superheterodyne receiver works, with visual "real time" examples. The unrestored SP-600 still has some life in it, see it come alive in it's original condition one last time before it gets restored. Enjoy!
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2025-06-02 14:03:32 +0000 UTC View Post
Here are all the files, a circuit description, and an instructional video on the assembly procedure for the Marquee Sign Flasher circuit. I have included options for different flash procedures to make this even more universal. No programming needed, just easy to find, dependable, "off the shelf" parts!
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2025-05-16 11:44:41 +0000 UTC View PostI'm working on a custom project, and I will share all the details with you! The circuit for this project can be used in multiple settings, with many different kinds of power supplies, it's very versatile. In the next video, once the circuit is complete, I will explain step by step how the entire circuit works with example. This will also aid in the understanding of memory circuits, they are rea...
2025-05-02 23:07:32 +0000 UTC View Post
Find those noisy parts before you build, or use this circuit for component verification. This circuit will test all sorts of parts for intermittent noise, and even breakdown. A very beneficial tool for the test bench! See attachment below for the schematic. Enjoy!
If you are enjoying these videos and the shared circuits, you can let me know by tapping the heart symbol below. 2025-04-16 11:32:01 +0000 UTC View Post
Over quite some time, I have been putting together a collection of "good" cheap components to help get your parts assortment started. Even if you just need to top up on some parts, this collection is great. You will see some of these parts in my future rebuilds and restorations. Enjoy!
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2025-04-04 00:39:38 +0000 UTC View Post
Printed Circuit Board layout and Component Map release! Use this to get rid of unwanted ripple and hum in audio circuits, radio circuits, test equipment, and pretty much anything else that may need ripple reduction. Enjoy!
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2025-03-17 05:05:05 +0000 UTC View Post
Here is the schematic (in the video) and parts to get you building. This circuit can replace an inductor or reactor in many different applications, and perform much better too! The magic is in the component selection (shown in the video). Enjoy!
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2025-03-04 01:23:14 +0000 UTC View Post
Here is the circuit board and all the build files that make a seamless install! This board can be used to adapt a Bluetooth module to and AA5, an AA6, a transformer type set, or even a general purpose audio amplifier. The possibilities extend beyond this as well. Enjoy!
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2025-02-17 13:13:14 +0000 UTC View Post
Let's test some Switch Mode Power Supplies for noise and regulation. The tests are very simple, here's how. Enjoy!
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The forum is Live! Here is the link: 2025-02-03 15:11:31 +0000 UTC View Post
Here are some important electrical safety considerations while working with line operated devices. Every device has it's own design, so covering all aspects is difficult, this video talks about the more common issues you may encounter.
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2025-01-17 06:34:40 +0000 UTC View Post
Understand how the filament circuits work in AA5 and AA6 radio receivers, "transformerless sets," holiday lamp strings, IE: "Christmas lights," both incandescent, LED and more. See how changing the current of one bulb (or tube) affects the entire string (series configuration), and how it doesn't affect a parallel configuration.
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2025-01-02 15:54:08 +0000 UTC View Post
Installing a Bluetooth board into a receiver or another device? This little PCB makes the job all that much easier, and gives you many wiring options too! Complete example of operation and installation in this video, enjoy!
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2024-12-12 17:59:06 +0000 UTC View Post
Get great sound from your old radio by connecting it to your computer, phone, ETC. Play all your favorite songs, old time radio broadcasts and more! Its super easy to connect, and use, here's how!
Link to the Bluetooth modules I use: https://www.amazon.ca/Aideepen-Recei...
2024-12-03 20:37:41 +0000 UTC View Post
Understand what every resistor does, and why it does it! Lots of real world comparisons for an easy to understand lesson. Interested in more lessons like this? Let me know in the comments below or tap the heart Symbol. Enjoy!
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2024-11-17 09:09:36 +0000 UTC View Post
What every capacitor and Inductor does in a radio receiver. See examples of frequency drift due to temperature change, and the affects of over coupling into circuit. See how an oscilloscope probe will drag an oscillator of frequency, where the Ultra Probe remains invisible to the circuit and doesn't affect it in any way. Lots of great tips regarding component replacement and more!