Neat Electronic Tool From The 1930's, Lets Look Inside!
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- čas přidán 14. 05. 2018
- High tech stuff from the 30's! This neat little monitoring tool definitely needs to be brought back to life. Lets fix it together! To learn things about electronics that you won't learn anywhere else, check out my Patreon page here: / mrcarlsonslab
- Věda a technologie
To learn things about electronics that you won't learn anywhere else, check out my Patreon page here: www.patreon.com/MrCarlsonsLab
Hello Mr. Carlson. I have a suggestion for you that might make it easier for you better get an idea of what your viewers (or maybe just your Patrons) think you should do next etc. There is a free to use polling website that I have seen being used on various CZcams channels for several years. Here is the website "www.strawpoll.me" 73 de OZ2BO. Ps. I have been putting off becoming one of your patrons for an embarrassingly long time. This has now been rectified! :-)
(I´d like to see the messy job of de-potting that transformer please;-)
If you're not already, you should be a father. You seem like you'd be a patient dad who could raise some smart kids.
I have a 180, you're a genius. Did you take the IQ tests?
Hey, i have an idea for you that's better than de-potting. If you can figure out where the capacitors are and how they are attached, you should be able to drill through them or their leads, breaking the circuit. You could get this using x-ray. I bet you have some tubes and power supplies good for that at home, right?
MrBrymstond Sure you do buddy.
DEPOT the transformer . . . please ! . . . . . . certainly a bit messy but it would certainly teach us a lot. Your running commentary during the process would be interesting, fun and educational.
I would second de-potting the transformer BUT also request, for the educational factor, to show in one video the de-potting process and then in a separate video showing for this same device, how you would go about scavenging another transformer and making it work. My reason for asking it be done for this device apart from the familiarity from having watched this video, is also because of the interesting design for the transformer they chose with the separate taps and what not which could be difficult without the proper knowledge of how to overcome those issues when grabbing a transformer that isn't necessarily set up with the same taps. Extra work, sure, but I think it'd be really worth it. The other reason I just thought about is what if the internal capacitors had actually been direct shorts to ground and fried the transformer? Then we'd really need a replacement and short of finding an exact match, we'd need to figure out how to grab something and make do with it. Ok, mini-rant done :D Thanks for all your hard work on these videos, Mr. Carlson. I truly do appreciate the time, effort, and care with which you present them to us.
GREAT suggestion/reasoning, thanks.
depotting is a standard practice on NSTs for tesla coils. Did only one and it is a mess...
I've never seen a "tar" device de-potted. I worked for a company when I was in HS that made 600KV+ x-ray machines. Sometimes a Marx Surge pulse generator module would go bad. We had to de-pot the epoxy modules using MEK to find out what went wrong.
Someone do a hashtag #depotthetranformer
i love the "if it doesnt work then we'll make it work" attitude of your videos
Yes, please De-pot the transformer. Can't wait to see what's inside there.
"It really doesn't have a choice when it is on this bench - it's going to work again!" - Mr. Carlson is the Chuck Norris of electronic!
Now what most of you lot don't realise is that some of us worked on that old kit when it wasn't old kit and we used the then state of the art test gear, sometimes even designing and building gear to do the job because no one had worked on the, "new gear", that, like ourselves, used to be new gear.
I was an apprentice in the days when audio amps had what looked like a couple of up turned milk bottles as push-pull output stages and we saw in the smaller and smaller glass bottle valves/tubes until along came those new fangled transistors followed by small scale integrated circuits, medioum scale ICs and Larger and even larger scale Integrated circuits.
Then those Large scale ics began to shrink and so it goes on. And no, "A Wobbulator", wasn't the generously endowed secretary of the manager.
He can cut a knife with hot transformer! 😆
DE-POT! DE-POT! DE-POT! lol, seriously, I'd love to see that process, if it's safe to do so, and you're the man to give a proper demonstration.
You HAVE to de-pot the transformer. It would be unthinkable to _not_ have this little beauty as anything other than fully restored.
It's magnificent!
I bet Mr Carlson is the only guy in North America that gets a weird old scope from the 1930's and says if it's got a bad crt, no big deal I have a replacement lol
I have three 913 CRTs. And a total of at least 50 other small CRTs. If you are interested, I made video demonstrating many types of small cathode ray tubes, including the 913: czcams.com/video/bRuqud2j_d8/video.html
1 inch CRTs are quite common
i watch tons of vlogs on youtube and without doubt this mans vlogs are top notch, im fascinated with electronics and yet know nothing about it
Hhhhhhg guy dry t6666lpp000p0pp
Thank you for getting right to it. So many CZcamsrs think everyone wants to hear them ramble for five minutes about nothing related to the actual subject.
I know nothing about electronics except to take my items to someone that does for repairs. But I totally enjoy coming to your youtube channels and just sit back and watch you do projects. You explain thing so I even understand. Thank you
Just because it's so hard to find someone with such comprehensive knowledge, I'd like to see a depotting follow-up video.
Ooooh, this is a treat. I love these vintage teardowns. I was just finishing a long day of work when I saw this go up, and now I'm watching before bed. Absolutely turned my day around! Thanks, Mr Carlson!
Bakelite was the first commercial plastic. It was a liquid that could be used to cast into objects or coat things like batter on a piece of chicken. It solidified into a hard, airtight material and would over time get harder and ultimately brittle if exposed to such things as ultraviolet light (many current plastics have this same problem). Very widely used in commercial and even military equipment to replace leather and glass once introduced. Created the modern "Age of Plastics".
Please de-pot the transformer.
1935!!! Good job, awsome video.
My dad bought his eico audio gen. new and used untill 1974. Your comments about it's quality quantified my belief that my dad new quality. Thank you
No idea about vintage vacuum tube electronics except that they are cool!
So many things I like about your videos, however the thibg I love the most is your walk-through and explanations of schematics! Thank you!
A lot of this old stuff used resistor wire for the power cord. I had an old radio that had a bad AC cord, but it was resistor wire so I had to add a large wirewound resistor to the inside of the chassis. It worked just fine but that wirewound resistor got so hot that I could not use it very long. I was only 9 years old at the time so I did not know about resistors with heatsinks. I guess the purpose of the resistor wire for the AC cord was to provide 6 feet of resistor allowing it to cool. All this ancient electronics gear is so fascinating. Thank you for documenting these devices in your videos.
"When it's on this bench it's going to work again" I really love that positive attitude. That is the spirit! Another great video Paul. This is such a simple circuit. Was so much fun to see this old piece come back to life. Really hate it that they stuck those caps in the transformer like that. Would be nice for folks to see how it is done by a real professional. Thanks Paul for this video.
If it didn't the video wouldn't have to go up sooo..
Wonder if he can give my Dreamcast the once over, read a load of tutorials about simple fixes, done them all and it still won't read anything. Oh, well, it was dirt cheap
I want to know,
Where the heck do you find these things?
That Mini O'Scope is over 90 Years Old!
The Radio Shop 1
Don't get cocky, kid.
When I see an old 1930’s electronic device that was used in the nascent radio industry at that time, for some funny 😄 reason, I am reminded of the scene from The Little Rascals (Our Gang) show about their “International Silver String Submarine Band” where Spanky knocks over a floor microphone and all the tubes in the radio room blow and the radio engineer pulls at his standing straight up hair. Too funny 😂
That's an awesome example of intentional technology. Almost 90 years old and it not only works but it's still relevant. Fantastic! Great video! Thank you.
Yes! Depotting would indeed be another welcome opportunity to learn how to go about restoring a transformer like this back to service.
God keep Blessing you and Yor Family ! Thanks!
I’m an electronics baby, but that old green stripe scope is so cool.
Thank you @Mr Carlson's Lab. This makes me with I had snagged the Dumont Oscillograph from my last job. It was just sitting, waiting, for a good home. It hadn't been used in decades.
You're welcome!
Don’t let this distract you from the fact that there are transformers in Manchuria which have not yet been depotted. Mr. Carlson, the type of guy who makes us think he’s going to depot the transformer.
I picked up a Waterman "Pocket Scope" S-11-A built in the late 40's at a flea market. Replaced the electrolytic caps and it runs like a champ, and appears to have original tubes. Despite it's low bandwidth, it works quite well for repairing audio gear and random analog projects. While modern test equipment is no doubt far and beyond in terms of capabilities, I don't think much of my high tech gear will last 70 years and still work. Plus, it makes a great scope clock between work tasks ;-)
Thanks for sharing your videos - I am equally entertained and fascinated while learning a few things along the way. Love your style!
Thanks for your kind comment! The Waterman scope is a great looker.
Seeing you depot it and relocate the caps would be a great lesson for the rest of us! That said I can understand wanting to just replace it! Cheers!
Just watch your vids because this has always made me want to study more into electronics.Years ago 1986 my next door neighbor asked me if I wanted all these Heath kit electronic projects he had sent in for but never put any together.The kits that he gave me were a 10" b/w television....only the audio worked on that.An am radio which I still have and works great.An oscilloscope and a voltage tester.....that worked great and I sold them through a ad in the paper years ago.And several small testing modules for like vacuum tubes.....caps....resisters.....and diodes .At the time I wanted to learn everything .....but was offered a job in learning plumbing ....in which I followed.I do enjoy your vlogs and will slowly try to get back what I learned in my youth.A friend of mine from years back taught me a lot and we were always getting supplies at Radio Shack in the late 70s/ early 80s
Your videos just fly by because they are so interesting and informative, you Sir are a wonderful teacher and I love the way you bring your professionalism to are screens. Another great video I just can;t speak highly enough of you and your channel........Thank you!
Man, I'm hoping the day comes when I can say: "It doesn't have a choice, once it gets on this bench it WILL work again!" and it actually happens! I've learned a lot from you, but I feel it will still be a while yet. Cheers for the videos, Mr. C.
I hope you de-pot the transformer, as messy as you say it is, I think we would learn a lot about the construction, manufacturing, and theory of operation. Your channel has given me a deep appreciation for these "old-time" electronics that I've previously dismissed -- thank you for educating us
I love how the sine wave kinda resembles a crown being rotated in 3d space. A handy quirk of the nature of sine waves and trigonometry.
What a nice little old Beauty! Good to know it came into hands that know how to treat it and bring it back to life! Good job here!
Thanks for sharing!
I am so glad to have stumbled onto this, and your following “Depotting a transformer” CZcams. Such excellent information. And there is more??!! For the cost of a gallon of gasoline (in Seattle in May 2022) I can get all the extra goodies. Who can’t say, “Yes! Yes! a thousand time Yes!” Thank you Mr. Carlson. I am looking forward to learning electronics with you.
Welcome aboard!
The capacitor manufacturer Aerovax is still around and making capacitors! No longer in Brooklyn though. I think you should call them and ask for your money back on the leaky capacitor. Only 80 years old and it already worn out.
With the neat graphics on it this might have been one of those times that hollowing it out and hiding a modern cap inside would have been worthwhile.
molson12oz, so... will you replace this capacitor with an identical new one for free, or not? What's the warranty policy dictated by that fancy ISO 9001:something of yours?
:P
molson12oz, yeah, sorry for not being actually funny; it's just that the ISO process certification stuff seems so out-of-place under this video, and reads as if copied from a press release.
Props for being in the industry for nearly a century, though - that's genuinely cool and good to see. Even if your capacitors are lousy ;)
It must be a miracle or a public relations coup d'etat for Aerovox to be so big in their field and yet make crappy caps.Hmmm-I'll stick with the ISO certification of quality-that's not a silly Gov label- it's an industry standard constantly improved and yes- it must be maintained.
But-once a company has earned it due to their insistence on quality it is a GREAT ad footnote.
molson12oz, previously you turned your "satire filter" OFF.
I can only assume it also works as a "satire detector", in which case I'd recommend keeping it permanently ON - because it should have been bloody obvious that my comment was tongue in cheek. Nobody expects a big electrolytic capacitor to keep working for 80 years. Plus, I absolutely love its looks; the labeling is so stylish and classy.
Anyway, I still love you, even if both your capacitors and your sense of humor are lousy :)
PS. I already know what ISO 9001 is, although I appreciate the attempt to educate me. I never claimed it's just a government label.
How has this channel not got more subs? So much knowledge and wisdom, excellent teacher 👍
I love your attitude against "shelf queens".
Your lab looks like an Aladdin's Cave of test gear lol 👍🇬🇧
While I have never de-potted a transformer, nor do I anticipate doing so, I would really enjoy watching the process required done.
"When its on this bench it is going to work again", Awesome
I wish I had a bench like that.
"These nice little vents are great for letting the smoke out" (2:33). Awesome 2.
It's like a Mr. Rogers version of AVE
Depot the transformer, it would be a really nice teaching lesson for all electronics enthusiasts. As a professional electronist, I wouldn't waste the time of doing that, and I am sure you wouldn't do that also. Given the fact that you make such great educational videos, I would recommend to do it, for all enthusiasts and hobbysts.
Great video!
Even when electronics gets more capable day after day, the old stuff is fascinating!
The mains transformer _boosts_ voltage, i couldn't get used to that. The Aerovox company that made that filter condenser seems to still be around today.
Except that they now make capacitors and no more condensers.
Please do open up the transformer, as I always find it interesting to see what is inside.
They're not just leaky - "They're UGLY leaky!". Words that will haunt my nightmares. ;)
I love old test gear. I restored my share and I can tell you what they lacked in technology they made up for in Ingenuity and cleverness. I wouldn't trade my digital equipment for old stuff, but I really enjoyed working on them and learning.
You have an infinite capacity for taking pains and doing things right. Accordingly, depotting the transformer is CLEARLY the only proper move. And along the same lines, that old 2 MFD cap looks so cool, how hard would it be to open it up, insert your new cap, and keep the vintage look? (Easy for me to say as you're the man actually doing the work.) Anyway, nice job as always.
Always a pleasure to see a new upload from you. Thank You!
I'd really like to see a depotting of the transformer. Old tech is some kind of special and always interesting to see how certain things were done in past.
De-pot the transformer
FHRsLP the Tar, tho. That's the secret ingredient in Kryptonite.
I'd like to see the transformer de-potting as well, even if it's just for the sake of having seen it once in my life, you never know when knowledge gets useful :)
Great video, as always. Thank you !
I love watching your videos , in depth details , historic items and facts , repairs and the odd Frankenstein repairs - IT’S ALIVE ! , IT’S ALIVE ! ! and the time , energy and , great effort you go through to show us all what you do through your eyes . 👍🏻🇬🇧👏🏻🇺🇸🍻🇨🇦😃🤓
I actually built one in the 80's from an article in Radio Electronics that detailed the construction. It used a 1" electrostatic CRT (I think a 1P21) and used 12AU7's for the input and deflection amps. I still have the schematic and the parts.
I was curious about that AEROVOX condenser so I typed in the patent number (1,736,764) and found an article from 1929 detailing the process to make this paper wound paraffin wax filled cube. The patent mentions an asbestos lining used in the vat these things were made in and dielectric oils (presumably PCBs). Amazingly, the company AEROVOX is still in business making capacitors since 1922.
All the good stuff!
I have repacked some old bakelite capacitors for a Philco radio that were filled with this tar. I used a heat gun to melt it and drip out into a tin can and then pried out the old parts and desoldered connections to terminals. Final cleanup was with lighter fluid before placing modern caps inside the old bakelite container. Using the heat gun will give you more control of the process than the oven, in case something decides to ignite.
Thanks for the video! You always have the best audio quality and a very deep knowledge of your equipment that I can personally appreciate
An enclosure made with one screw. That alone means it is from a whole different era. Imagine how difficult it would be to merely open if it was a currently made item. And of course the beautiful crinkle finish is a thing of (beauty) old.
lol vents are nice for letting the smoke out! Always a joy watching your work
I like your confidence 8-) just because of this, thumbs up.
I love the confidence your knowledge gives you, it's on this bench so it's going to work. I wish I could be so certain and hope to expand my own knowledge. I'm glad you decided to do the depotting video
This channel is so cool! I subscribed to it at some point and forgot that I had. Had not seen any new content from i in a long time. Good to be back here and learning! I love restoration of old electronic devices!
LOL - Watching this and you talked about how none of the switches were labeled and then went and tested the capacitor using your own device where nothing is labeled. Some things don't change in 90 years.
LOL, Yes. My reason is, I'm too busy designing new equipment and circuits, rather than take the time for myself.
Weekday a Sunday when a new video from Mr. Carlsons's Lab comes out. :-)
I want one!!!! It looks like it "NEEDS" to be setting and "USED" next to my ART-13.
Just plain cool and still usable.
DEPOT the transformer if it is at all reasonable, please. I enjoyed seeing the 913 tube again. It's been a really long time. I worked in the production of 6326/6198 vidicon tubes in the 1950's and we would sometimes change the coating from photoelectric to phosphorescent. This produced a 1" picture tube with amazing clarity. Very useful for "in house" test equipment similar to the one in you excellent video. Some of us adapted it for monitoring our "home made" cameras.
Very well done, nice piece of history. Yes love your videos and teaching.
When my father and I did restorations we would take the old caps like that beautiful Audiovox and remove the core and repot with a modern cap so the looks are preserved...
That's amazing that they were able to make something that small before transistors were invented.
Wonderful bit of vintage gear! I would have liked you to remove the capacitor contents from the Aerovox can and re-stuff it with the new capacitor. I think it's important to keep as much visual history of this kind of 1930s equipment so that when someone takes it apart in 50 years time they can see the kind of capacitor that was used back in the day. Leave a note in there too to show what's been done. It actually makes a good debate as to what responsibilities, if any, as restorers we actually have.
It would be pretty simple to find out if it was restored... you do NOT have to recreate the mistakes of the past to make it "real." A note would suffice.
I absolutely agree that the components need updating but if the equipment is of historical interest then leaving in place the old isolated component just to show exactly what was used originally surely gives the best of both worlds? Is the debate not more about whether a piece of equipment is historically 'worthy' of maintaining visual originality?
Exactly. The authenticity of historic equipment is destroyed by fitting modern components that are visible. At least the original component should be left so a future restorer can do it properly.
I now we all would love to watch the process in depotting that transformer!
love that old caps label, It reminds me of a poster for an old circus or magic show
Damn you Mr. Carlson, I had things to do today. Now I have no choice but to watch this video. No choice!
LOL, I can relate. When I first found Mr. Carlsons channel, I totally went down the You Tube rabbit hole. Now, when a new vid posts, I HAVE to watch it.
I would love to see a video about depotting a transformer, maybe combine it with a video depotting old tar caps to place a modern cap inside (for full restoration)? Personally I agree with repurposing old electronics and don't make them dust gatherers but only using the guts from a 80+ years old device does kinda hurt my soul. Would rather see a device in worse condition get that treatment than this, but hey, that is my opinion. Thanks Paul for yet another neat video!
Always cool to see the old test equipment thanks for sharing.
Good idea about showing how we can go around the old style transformer. I have had a couple of issues where I needed to find a replacement. I enjoy your videos. I am learning a lot.
The depot-ting process would be very nice to witness.
It’s going to work again. It has no choice on THIS bench.
I LOVE it!
Very nice! I always fall asleeep watching your videos for 2 reasons:
1) I usually start watching them late in the evening
2) They tend to be long and very detailed.
And I can't wait with it until the weekend, that stuff is just too good.
as a complete physics idiot i have the utmost respect for the absolute high end level of your fixes. i´ll basically watch all of your videos without any clue of what is happening. thanks for your brilliant content!!! just watching the master doing his thing gives me joy.
i wish we had somebody like you here in germany so he could fix my 2 beautiful tube echolettes from the late fifties.
Hi. I'm Mike in Jacksonville FL. Love all your projects, especially the ones involving vintage electronics, and audio circuitry.
I really enjoy working on old jukeboxs. I'd love to see a rebuild on a Rowe stereo amplifier 125watt range. Keep up the GREAT work.
This was really interesting, thank you Mr. Carlson. Also, thanks so much for your electronics program on Patreon. I’m really having a great time with it and learning more and more with every video and explanation. I still haven’t taken the jump to build my own PC boards but will in due course, just want to make sure I know how before I proceed. Thanks again!
Cute CRT from 1935, nice art piece of ingeneering
Mr. C I think you should De-Pot the that feisty Xfmr. I have seen Ford Model T Buzz box ignitions de-tarred. The guy saved and re-used the pitch. I date from the tube age so your care and attention to detail in bringing these relics back to life is great. Remember that one hand around HV is safer than 2. Don't ask me how I know...
Great video, keep your videos coming, love your attention to detail and safety concerns.!
I'm always impressed of what kind of test gear your own from that Era. To me it looks also like some old science fiction movie equipment maybe from War of the Worlds ;) Thank you Paul for sharing this, otherwise I would never see such beauties!
Wait. Some of that stuff I used when it was considered state-of-the art.
Of course, this isn't one of them...
I found your channel today. I am impressed by the work you do, it is very interesting! 👍
It certainly will make a neat video!
not to mention very interesting to watch.
Many thanks for your informative vids.
Fantastic! I think I will try and build one of these.
I came across one of these via eBay. Can’t wait to see what king of test gear you plan on turning it in to!
Thank you for your great work!! Always enjoying watching your Videos.
Thumps up
Excellent informative video Mr Carlson, very interesting to see the manufacturers design, terminology and production techniques.
" It lives ", just thinking that, when you said it.
Many thanks for sharing.
That is amazing! Love that little scope!
I love that cord! Love your patreon and videos, man! Look forward to the next!
love watching you work on the old gear, de-pot it keep it as original as you can
The generator's back!! Awesome video, very very cool to see. I always get really excited for symmetrical round CRT display scopes!
I know it would be a lot of work but I would love seeing the de-potting procedure!
Excellent and most informative
This was a great video, very exciting to see that oscilloscope come back from its deep slumber. This if my first time in this channel, subscribing without a doubt. Thank you for the nice content.
Thanks, and Welcome!
Thanks for sharing, that was fascinating
Just out of curiosity I checked up on the Aerovox corporation. The unit was probably made before 1938. The address listed on the capacitor is in Brooklyn New York. Aerovox moved it operation to New Bedford Massachusetts in October of that year.
Yep lets see the de-potting I am a little curious about the Cap or Caps inside and if the Potting material had a affect to why the Cap's have failed. And as always it's always a treat to hear you explain things that many others just can't seem to do well. Thanks for the great content...