Some hang time with Mr. C. Grab some comfort food and let's look at the function of a radio receiver from end to end. This is how a superheterodyne radio receiver works, with scope, spectrum analyzer, and schematic description. Enjoy!
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Here are examples of waves you will find in different devices, with explanation detailing why they use these specific waves. See a bridge rectifier actually working, using LED's... And more. Enjoy!
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2021-01-16 02:02:33 +0000 UTC View Post
Part 3 is here! Let's look at another schematic, and it's actual chassis. Then I will explain "how to," and how "not to" restore a device, lets dive in!
If you're enjoying these video's, let me 2021-01-03 15:07:29 +0000 UTC View Post
Grab your favorite beverage... And a snack, lets go over another schematic together. Also: Attachments for the Load Pulser below. Enjoy!
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2020-12-16 01:26:02 +0000 UTC View Post
Grab a coffee, and sit back with Mr. C. Let's look at a schematic and discuss it's function.
If you're enjoying these video's, let me know by 2020-12-04 03:16:42 +0000 UTC View Post
Below are four more attachments with the needed info to complete your tester. A circuit board variation without the adjustable forecast floor setting is also provided. If you need to skip to a specific section in the video, here are the time stamps: 22:25 is assembly instructions, 41:22 is component mounting instructions, 48:02 is the alignment instructions. Enjoy!
Here is the dual display with a surprise, (It's more than just a display.) All build files below as attachments. Enjoy!
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2020-11-17 00:06:29 +0000 UTC View Post
Lot's of helpful information to make your repairs and designs quicker and easier. Enjoy!
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Here is a universal version of the delay circuit just shown on YouTube. A circuit description with real time examples (removing components while it's on) to see their purpose and effect on the circuit. Enjoy!
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2020-10-16 19:07:19 +0000 UTC View Post
Here is the new display which will have the option of being calibrated to indicate parallel leakage resistance in "Equivalent Ohms." This capacitor tester will be a "super hit" for the audio crowd that's interested in determining why a certain capacitor makes an amp sound better. Enjoy!
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2020-10-03 10:18:55 +0000 UTC View Post
Let's talk about some power supply knowledge "that isn't so talked about." We will look at IC reference noise, and compare the UA723 to the LM723. See an output pass transistor topology that isn't normally seen in power supplies... And more. Enjoy!
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Here are some more helpful tips to make your PCB building all that much easier. Techniques to steady your hands, a cheap mat to stop your board from moving, my preferred solder, and solder sizes, my favorite tip and it's part number, soldering temperature settings, and much more. Enjoy!
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2020-09-03 04:09:21 +0000 UTC View Post
Lots of attachments below, be sure to download them (print them off) to follow along. In-depth information about component grading, and an example displaying the importance of the circuit board ground plane. Lots of good "universal" information here for designing power supplies and such. Enjoy!
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Here is the backwards compatible eye tube display for your previously built Carlson Ultra Sensitive Forecasting Capacitor Tester. There will be a video (in about 3 days) with more information and a circuit rundown/analysis. See attachments below for the component map and PCB files. Enjoy!
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2020-08-17 07:56:10 +0000 UTC View Post
See how the display tube will function in the new capacitor tester. This display will be backwards compatible with older testers as well. Discussion about the possibility of using different types of display tubes for this project, and much more. Enjoy!
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2020-08-03 00:37:39 +0000 UTC View Post
A quick video displaying some components that should be purchased before the release of the new tester. This is so you can get the parts while they are available and the prices are still low.
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2020-07-15 15:04:10 +0000 UTC View Post
Never seen before: See the special custom built tools used to design the original Carlson low voltage capacitor tester. Never before released specs for the capacitor tester are also in this video! See some different ways to clean and repair band switches, relays, toggles, and so on. Lots of great information here, Enjoy!
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2020-07-03 11:51:13 +0000 UTC View Post
Here is my long sought after (and researched) process of cleaning and lubricating VR's, Potentiometers, and other controls. An attachment for my breakout PCB adapters is below as well. Enjoy!
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2020-06-16 04:49:03 +0000 UTC View Post
Some great tips to help you lower hum in your radios and amplifiers. Get rid of RF on the input of your audio output tubes. Proper dial string considerations, replacement.... And more!
If you're enjoying these video's, let 2020-06-02 19:50:33 +0000 UTC View Post
Another design released to Patrons! Here is the very simple transistor tester and identifier, with all the files. Enjoy!
If you're enjoying these video's, let me know 2020-05-17 06:09:11 +0000 UTC View Post
Another great test tool for your bench. Make your troubleshooting easier with this very versatile, and easy to build circuit. No parts to program, just easy "off the shelf" components! Enjoy!
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2020-05-03 15:10:01 +0000 UTC View Post
The Amplifier is complete and sounds "Fantastic." See how to calculate amplifier open loop gain, amplifier closed loop gain, and calculate feedback in dB. Also: See a "Sneak peek" at the next very neat device release here on Patreon. Lots of info in this video, Enjoy!
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Just about ready for final testing, It sounds really good! See under the chassis, how to lay out the parts, and some stories of the issues along the way. Enjoy!
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: https://www.patreon.com/posts/8239565
Here is the power transformer data, and part number for this amplifier build. Use this data to help choose the correct power transformer for your future projects too! Screen supply regulator circuit explained with additional information.
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: 2020-03-17 12:28:17 +0000 UTC View Post
Here's some information you won't find anywhere: Learn how your tubes are working by looking inside them, while they're in service. Learn how to detect a fault condition before it happens, and save your equipment. Also: See how to map the pin out of unknown tubes by following the internal parts to the pins. A quick explanation of the phase inverter circuit in our ongoing project. Lots o...
2020-03-03 23:32:19 +0000 UTC View Post
Let's choose an audio transformer for this project, build a test bed, then see how this little amplifier design performs. Schematic attached below. Enjoy!
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: https://www.patreon.com/posts/8239565
This is ...
2020-02-19 15:15:00 +0000 UTC View Post
Lets see how much power this little amp really makes. We will see it's maximum clean power level, and it's maximum distortion power level. Let's find out how well the factory power supply holds up under these conditions. We will discover how much drive is available for the tube amplifier build. Lots of information here to get us started in the tube amp design portion of this project. En...
2020-02-03 16:57:51 +0000 UTC View Post
Together we will build a functioning audio amplifier, and blend it into an existing design. Lots of great information will be conveyed in this series to help you understand and build your own audio amplifiers with ease.
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: 2020-01-20 06:13:49 +0000 UTC View Post
In this video, Mr Carlson will take you through the steps to recognize and locate some obscure issues that may otherwise be overlooked during electronic troubleshooting. Use this knowledge to greatly speed up your repair process, and improve your understanding of these failure points.
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: 2020-01-03 14:09:51 +0000 UTC View Post
Here is the lockout circuit to improve your capacitor tester. There are 5 files below this section to download. Enjoy!
Here is a link to the list of video's here on Patreon, NEW LIST of Videos: https://www.patreon.com/posts/8239565
This is video #84, include this when request...
2019-12-15 19:14:23 +0000 UTC View Post