To learn electronics in a very different and effective way, and gain access to Mr Carlson's personal designs and inventions, visit the Mr Carlson's Lab Patreon page here: www.patreon.com/MrCarlsonsLab

@jamesengland9824

3 жыл бұрын

Why not add a audio delay relay NO on the output of your amp. After the amp is stable allow the relay to close.

@jamesengland9824

3 жыл бұрын

Oops, after watching this video you are adding the exact circuit!

@Dennis-sb7gp

3 жыл бұрын

Good job

@kerrymullin6978

3 жыл бұрын

How about using a DPDT relay and putting the red and green LEDs on the second pole. That would eliminate some parts and give you feedback that the relay is actually energizing. Just a thought.

@tee-jaythestereo-bargainph2120

3 жыл бұрын

I would love to review this amp ! Nice job Mr.Carlson ! Me have many speakers 😆

I've done electronics for 50+ years, I know everything there is to know. I listen to Mr Carlson and it makes me realise just one thing..... I know nothing about electronics at all🙃

@BruceNitroxpro

3 жыл бұрын

Chris Handley , You, too? ROFL

@frankowalker4662

3 жыл бұрын

Yeah. (he said, depressingly. LOL)

@the8bitbarn836

3 жыл бұрын

I've been working in electronics for about 40+ years and I've never been able to say I know it all! I learn things every day about things from basic principals to complex formals and circuit designs. Don't worry about what you know, worry about what you don't know and above all else never be afraid to ask someone if you don't know! Keeping an open mind brings you closer to a solution than all the thought and doubt in the world! Mr Carlson thank you for sharing!

@miroslavstevic2036

3 жыл бұрын

Frankly speaking, these are really basic things. There is no math at all. Even the basic electronic course we had at the University is full of complicated calculations, feedback, transient and small signal analysis. Electronics is nowadays much more than repairing some old stuff. If you take AC vector drive for example, complicated math transformations are the most important things. Actual switching bridge means nothing if you don't know when to turn on the transistor. It took me less than an hour to understand the depth of my ignorance. Although I know at least 100 times more than 20 years ago, I can't tell that "I know electronics", especially to know everything. I know 10% of the books I have, and the books are less than 1% of everything that exists.

@the8bitbarn836

3 жыл бұрын

@@miroslavstevic2036 So true. All the math that I learned for electronics seems kinda pointless now, studied logic theory and calculus point curves all of that. a lot of what I learned doesn't apply anymore, FPGAs, Asics, DSPs, and Micro controllers do it all now. Its more of component selection than actual design. There's not much calculation being done as far the actual construction of a circuit. The world isn't analog anymore it's digital. What electronics is today is cost based, life spans are shorter and the disposal factor is higher. We use and then we toss it out. Well that's my rant for today thanks listening!

Mr Carlson, you're not fussy at all, if I may say so, you're absolutely proper in the most necessary way. I know so little, but I enjoy listening and learning as much as I can. Gigathanks!

Hey Mr Carlson, I just wanted to say thankyou for all the free education you've uploaded over the years on this channel. I'm a high school student and your videos and knowledge on electronics has provided me with hours upon hours of informative, useful and practical advice. Keep the videos coming! A lab that looks like yours is a dream of mine I hope to achieve one day.

@southjerseysound7340

3 жыл бұрын

He really is one of the best there is. Granted there's others like big clive that are fun too. But when it comes to learning he can't be beat.

Mr. Carlton's Lab KZread audio quality: now I'm starting to get some insight into why your presentations have such great audio.

I need more videos of people drawing schematics while explaining the why and the how. So damn informative.

turning his monitors on before the amp and hearing the loud THUD, is the reason his hair is like it is :)

@MrCarlsonsLab

3 жыл бұрын

Yes!

@fadingbeleifs

3 жыл бұрын

🤣

The videos where you’ve shown the design process are always my favorite.

As a professional Voice Actor, I've always recognised the need for flat response non-colored audio. (That, and my vintage radio addiction.) I've often wanted to comment on your voicing excellence. This gave me a great opportunity.

I would love to see a Mr. Carlson video on drawing tube load lines and composite load lines, and how they relate to the next stage. The few videos on the subject on KZread are pretty tough to follow or are poorly directed. I'd love to see his quality and style of teaching brought to the subject.

@AudioFanMan

Жыл бұрын

Bump!

A Mr. Carlson's video is always a good excuse to take a break from work for!

I'll shamefully admit that all of the EE knowledge I learned during undergrad & my masters was blown away in the first 2 minutes of your design process. I've spent so much time on embedded software design I never explored how to do very simple things with small & discrete components. Love your content and thank you for walking through your design process so nicely!

@elektrolyte

3 жыл бұрын

to quote Bob Pease: “My favorite programming language is solder ..." ;P

@MechanicaMenace

3 жыл бұрын

Everyone has a preferred toolset. There's nothing wrong with yours. Especially as you can obviously appreciate others mastery of theirs.

@BruceNitroxpro

3 жыл бұрын

@@elektrolyte , Well, I thought that was funnier than hell! LOL

The first vid i have seen from you was the vid about the ice rain you've had on Christmas/new years eve 2017. Never missed a video since then. Top quality productions with a host that knows the hell what he's doing. Keep the vids coming, your work is very much appreciated. Much love from germany 😉.

@Mr Carlsons’s Lab The audio on your videos is sublime.

Love watching you walk through a design so that we can understand the thought process. Helps much! Please do many more similar videos!!

Transistors so common that are probably in the soil in the backyard....Nearly spit my drink on the keyboard! Thanks for the great videos.

@MrCarlsonsLab

3 жыл бұрын

You're welcome

When I was a kid (some 40 years ago!) it took me a long time to figure out how to use transistors. I used to go to the library and look at the books, but it was like another language. In the middle of this video where Mr Carlson explains the transistors, I would have understood this straight away. His explanation is in clear simple English. I so wish I'd had access to this style of teaching back in the day.

@Watchyn_Yarwood

3 жыл бұрын

👍👍

@spudhead169

3 жыл бұрын

100% agree.

Mr Carlson is my favourite Ghost Buster!!! Just look at all those apparatus??? But now, without trolling, thank you for sharing your amazing wisdom!

Oh my gosh, I would like to see a conference with Mr. Carlson and Louis Rossmann, it would be fantastic as to these two guy working on an circuit board. WOW

Nice project, and great walkthrough of the design! Funny how old-school home-etched PCBs go well with modern surface-mount components -- no drilling!

Excellent video, 30 seconds dead on... If this we're a commercially oriented channel I would've rolled my eyes. Now I'm just amazed.

A little late to the game but a great video with everything explained so well. I tracked with everything except the purpose of the 22k resistor between the 6v3 rail and the base of the transistor that drives the green LED. Heading to patreon to sign up. 👍

Like watching DaVinci sketch. Paul, you’re a genius and watching you work and think things out is both fascinating and instructive. You set the standard for KZread audio quality, one that we all strive to achieve.

Thank you for letting us accompany you during your design process, Mr Carlson. Very enlightening. I had to laugh when the trusty 555 came into the scene for the millionth time in a design, I remembered when as a young lad I bought my first one at an electronics outlet in 1974, those $2 whopped into my pocket money , got me sweating at the till :-) But there is no money which can counter the wealth of knowledge gained from cobbling my first simple circuits around this first IC of mine..

A masterpiece of explanation. Thanks so much for taking the effort to make this video.

@MrCarlsonsLab

3 жыл бұрын

You're very welcome!

I dont care if the audio is amplified with psychedelic chickens and filtered through kosher pork chops, its the best audio on youtube. I wish I could say I understood why, but it would be like explaining positrac to a kitten.

@InXLsisDeo

3 жыл бұрын

I listened to the video through my McIntosh 275 power amp and yes the sound is glorious.

I could watch these circuit design and implementation videos from you all day. Fascinating to watch. Learning from a top notch pro. Thank you!

A very nice and clean simple design and its aesthetics are beautiful. Love it !

Hi Mr Carlson, I'm running out of your videos to watch and not all of us can afford Patreon. Please add more videos here! I love watching your videos and I have got my hands on a 1950s PYE radio that runs on a 90v battery. I found that the variable capacitor was shorting between plates. I have fixed that but I'm glad I started watching your videos because now I know about replacing the paper caps and that they need to go in a certain way around. I also think I'm more confident to do a proper alignment. Luckily, the radio runs on a battery so there's no mains involved. Thank-you for your educational videos, please keep them coming! Dave.

I always enjoy Mr Carlson's videos no matter about what are they.... Just listening make me feel good.!!!

Great video... The audio quality of your videos has always impressed me...

@MrCarlsonsLab

3 жыл бұрын

I appreciate that!

Hello Paul!! Another GREAT video as always!! This was a VERY GOOD review of the venerable most prolific 555 timer chip and one of its many applications!! Yea Paul Carlson one of the WORLDS BEST INSTRUCTOR of ALL TIME in my book!! Cheers my friend from John Bellas KC2UVN 73's

@MrCarlsonsLab

3 жыл бұрын

Thank You for your kind comment John!

Excellent video ! I really appreciate the time you spend educating us. All your videos are so interesting. And your english is so intelligible. Thank you so much (a french guy)

That would explain why this channel has the best audio I've ever heard on youtube.

This was brilliant, thank you!!

Excellent video . There is nothing like bueatiful tube sound. Love the project. Very useful

Very nice. My headphones are also studio referencing cans, I’m interested in this amp. Thanks for being so thorough and intelligent.

@MrCarlsonsLab

3 жыл бұрын

Thanks for your kind comment Grant!

Great presentation, and as always, learned a lot.

Another great lesson, delivered by the best . Thanks Paul.

@MrCarlsonsLab

3 жыл бұрын

Glad you enjoyed it!

Great designing on the fly! I like the idea of sketching out circuit ideas on paper first before opening up the CAD software - i sometimes freeze looking at a blank screen but a blank sheet of paper and pencil seems to get me going. This reminds me of a circuit I made years ago to turn off a smoke detector for a 10 minute delay. I made a small perfboard with a 7555 cmos timer (great for low power battery projects!) - fit right inside the smoke detector case. I ran two thin magnet wires to a hidden lever switch to turn it off while cooking to avoid false alarms. Of course, I did not need a relay only a 2N2222.

Everything as always was vary educational. You really touch on a topic at the end I and others learning about audio, is more about larger transformers for lower frequency response.

Hi! Amazing studio. I am just reconecting myself with my old science passion, after 40 years of ignoring it. Chemistry, physics and electronics. Special old electronics. Just waiting arrival of a vacum tubes osciloscope... Thanks for inspiration.

Would love to see the artifacts on Patreon. Thanks for the informative and educational videos.

I have gained a great deal of knowledge from your videos. very good explanations om valve and transistors circuits Many thanks Paul

Mr Carlson's Lab I watch a lot of videos on youtube, and I am also a musician, so I have a gut ear for sound. I must say, you're audio quality is by far the best I have heard.

@MrCarlsonsLab

3 жыл бұрын

Thanks Hans, I appreciate that!

@InXLsisDeo

3 жыл бұрын

And all that on venerable tube amps.

excellent video as always mr carlson! Just joined your patreon and for anyone wondering its very much worth it!

Thank you very much. I’m sorry to say I have absolutely no idea about even the most basic understanding of what I’m looking at but I still find it very interesting.

What a well done video. Thanks for the great audio quality. Now I have to go and see if you have a basic electronics theory playlist so I can go an relearn everything.

Great idea running your heaters on DC. That eliminates a whole lot of hum.

Love the way you marshaled those electrons around. Sterling stuff.

Another enjoyable and informative video. Thank you.

Ignition points! I built a Tiger CDI system for my old Datsun 240Z and once when I took it in for a tune-up, the mechanic said he needed to replace the points, not because they were pitted but because the rubbing block was nearly gone after 60k miles. The points themselves were nearly spotless. I'm an old gearhead who in my waning years have embraced EV's due to not wanting to crawl around under them anymore. Grew up on vacuum tubes and still teach computer science.

@MrCarlsonsLab

2 жыл бұрын

Thanks for sharing your story George!

Very nice work ! Thank you .

thank you so much. That’s really all I can say, because the amount I’ve learned from you is immeasurable.

@MrCarlsonsLab

2 жыл бұрын

You're very welcome!

Common Mr Carlson, edumacate me! Love the videos!

As always..very clran and neat pcb design..impressive!!!

Awesome analysis Paul! 👍❤ Thanks!

@MrCarlsonsLab

3 жыл бұрын

Glad you liked it!

Thank you Mr Carlson I really appreciate for sharing this skills skills really appreciate god bless you

@MrCarlsonsLab

3 жыл бұрын

You are very welcome!

Very good video, only suggestion is to put a descriptif name to the project video, maybe ''Built a delay circuit for a tube audio amplifier''

Dude, your knowledge is amazing. Thumbs up, my friend.

That was so interesting and informative, Thank you.

@MrCarlsonsLab

3 жыл бұрын

Glad you enjoyed it!

Much appreciations m8. Thumbs both up! Namasté.

What I want to know is how do they manufacture those SMD devices? Fantastic video Mr Carlson just a utter joy to watch,the best of the best on KZread.

Dear Paul, i watched that nice video with a smile on my face because of the good, old trusty 555, that old guy will live forever. So simple, so useful.. As always thank you for your good job, i know you put a lot of work and love in every single video. 73 de Olaf DK6KF

I'm just starting into vacuum tubes. I'm excited to explore the channel. Very nice response 'curve' :)

"Blow you out of your chair" like Marty McFly in "Back to the Future".

Beautiful four tube Amp, Awesome 1 db response at the full audio spectrum, nice. As engineers we don't see that kind of care even in higher end equipment most amplifiers we see today there is at least 10 mili-volts of hiss or drive per db. That's quiet like you said and the range 5 Hz all the way to 50 kHz flat lining all the way. I can't say that I can hear frequency that high but I would say that it offers greater harmonic response than anything else out there! Great job great video! Awesome little circuit using a 557 as an off latch timer wouldn't of thought of doing that. When I heard relay I was thinking that you where going to use it to put the monitor speakers in stand by and enable them only if the Amplifier was powered up, remote power inhibit but instead you mute the inputs until the amplifier is full on and active. One concern I would have is would the relay over time distort signal due to oxidation on the contacts? Just thinking long term.

Wonderfull video. I watched it all the way till the end and enjoyed every minute of it. Great job, very well explained and highly entertaining/educational ! Keep it coming... ;-)

David W. Berning has designed and patented a design for OTL tube amplifiers that SAFELY obviate the need for any high value output coupling capacitors! These are high powered amplifiers!

I've learned so much here sir.

Sei sempre fantastico in tutti i tuoi filmati, bravissimo!!!

Top of the day Mr Carlson..awesome show learned a lot of useful info about transformers..thanks 👍🇺🇸👍

Great video once again, I enjoy your vids. Good ideas.. Lot of fun! :)

Paul... thanks for sharing... Great content keep it coming...

Genius!!!

Great video once again!

Wow that timing was right on the money

Yes, I suggested a similar project a while ago, exellent

very interesting mr carlson thank you

Very good vid as ever. educational , quality stuff.

excellent vid as always

I'm am ME who's recently began exploring much more deeply into EE over the past year or so. I love audio and have been toying with the idea of a DIY amp. I have high standards. Would love something that can perform like a McIntosh--- keep it coming! 😬 Edit: also, thank you for the basic concepts of electrical devices. I would find EE much more intuitive if people more often explained the fundamental mechanical function of these components and how they all work together. It's been really interesting learning EE -- basically ME but with electricity which is pretty cool!

What an amazing video! A small concern. 25:06 PNP switches seem tricky. In this case, the 555 output may not fully swing to 6.3V and if the output difference is more than 0.7V, it would still draw a small amount of current across the PNP base emitter junction. So even when the output goes high, the red LED would continue to glow.

@MrCarlsonsLab

3 жыл бұрын

The Red LED is fully extinguished.... Very good observation though, if the circuit isn't built just right, what you mention is an issue.

Hey Mr. Carlson, would you consider the possibility of a video series on how to be a badass genius wizard?

Great video! Slowly but surely I'm beginning to understand some of what Mr Carlson is saying.

I have to say that your audio has always been excellent, and I use an 18 channel audio interface, seperate preamp and openback Sennheiser headphones. This seems like a very nice project.

Wow this video looks super interesting to me, only about 10 mins in. My living room amp I built about 5 years ago uses 4 6as7s in pp with a pair of 6sn7s as the drivers for each channel, like you said they do need a beefy supply I think mine draws around 15amps off the 6.3v line. Mines not otl though it uses Japanese tango output transformers and is probably about 10w per channel, nice sound, originally it had 6v6s but it went triode as didn't even need to power of the 6v6s for the small space it runs in

Way back when I was learning transistor theory, I remembered the NPN symbol because the arrow is Not Pointing iN.

Very nice!

@MrCarlsonsLab

3 жыл бұрын

Thanks!

3:40 - That power-on "thump" can cause some serious woofer excursion, as I'm sure you're aware. Not exactly what you want expensive studio monitors to suffer from. My first stereo, a 70s Channel Master, beat the snot out of the speakers every time I turned it on. Wasn't long before the speakers were half-blown, thankfully they were free 8" woofers that I mounted in cardboard boxes. (I was an eight-year-old with his first stereo/8-track, don't judge! LOL By the time I had turned 14 I had already spent over $600 in a receiver and cassette deck, my standards had improved somewhat.) While we're speaking of speakers, might I say that the audio of your videos is truly exceptional. My speakers are far from high-end - two Sony bookshelf stereo speakers from 1992, paired with a ported car "full range" speaker box housing a blown MTX 12" subwoofer and a cracked 12" Sony Xplod subwoofer (and MTX-branded midrange drivers with MTX-branded horn tweeters) - but I continue to be blown away in every video at how well you master your audio track. I guess a flat amplifier and a good set of studio speakers really do make a difference! (I use these crappy throwaway speakers in the garage/Man Cave because I don't care what the humidity and temperature does to them.)

Great content as ever - Thank you

@MrCarlsonsLab

3 жыл бұрын

My pleasure!

The audio quality of your videos is superb as is your pronunciation.

I really enjoy seeing your skills and technique. Thanks for commenting on time estimates for job length, etc. I really enjoy when you do the "this old house" style of program. Thanks for sharing. Would you be able to use a battery backup power supply to protect the system from power sags? Or, would it introduce noise into the system?

@InXLsisDeo

3 жыл бұрын

Battery power supply doesn't introduce any noise so yes.

@WaterWhiteTuber

3 жыл бұрын

@@InXLsisDeo Thanks :-)

Amazing that you nailed 30 secs exactly.

Mr Carlson, you do a great job. I'd love to see more solid state stuff though. :-)

After I watched the intro I immediately thought to use a 555 and a relay to delay the output, but I dismissed that because I thought that you would use some black sorcery magic tricks to solve this, but turns out: very nice and simple!

I wish you could be my teacher, your knowledge is unbelievable

Excellent quality content as always. I don't know if it's just my sound system, but any of your videos seem about 20db louder than any other content including TV.

Been doing circuit design for well over half a century. I only do OTL if I get rid of the capacitors in the output.. I have designed OTL/OCL amplifiers up to 270 watts RMS into 8 ohms, direct coupled, no caps and no transformers, using Wiggins balanced bridging topology, driven by direct coupled differential front end, with mirror image symmetrical active load lines on top, and current sources in the long tails. DC Level shifting is done with high impedance current sources at a negative supply, adjusting the R above it, until correct offset at the node is achieved. Full DC coupling... and it can be servoed if you desire..

Like any good pilot, you need a Lab audio start sequencing checklist. Thanks for this very interesting video. You audio coming through my Studio speakers is excellent. @32:20 My wife is a palm reader. you will have many more videos in your life.