FET Audio Output Tubes For Battery Personal Radios Play Test Experiment

Рет қаралды 13,354

Күн бұрын

Пікірлер: 226

@theoriginalbingchilling 2 ай бұрын

Hi Shango! I am a 15 year old kid from hungary and I just want to thank you for your awesome videos. Your videos are very entertaining and informative and I have learned a lot from them. With the help of your videos I have been able to build a small radio collection, all of them working of course🙂 Keep up the good work because you are a treasure for beginners in this hobby!

@rriflemann308 2 ай бұрын

I watch every video, the dripping satirical tone makes them irresistible.

@retrocjt 2 ай бұрын

This is most accurate description. It’s perfect.

@nickb.8876 2 ай бұрын

I can't believe I've been around here long enough to remember that other battery set. Things have come a long way.

@LeonardoX86 2 ай бұрын

Same here 😂

@PINKBOY1006 2 ай бұрын

Oh man yeah, that was almost 10 years ago now huh. Time flies!

@iRepairElectronics 2 ай бұрын

Happy sunshine smiley face. This is a great option for those that do not have a collection of tubes to try. the base is a great place to jam the components i love it.

@phillanassa759 2 ай бұрын

This is a good option going forward. As certain tubes become rarer and more expensive, this is something that will keep gear going into the future! I like the LED idea, but it has to be DIM as dim as the OEM vacuum bulb it replaced. I think your next experiment should be for linear CB amps.. for those specific to the power tubes have become prohibitively expensive. Now all you have to do is engineer the grain and the grit that vacuum bulbs have and solid state often lacks..

@KameraShy 2 ай бұрын

I have had comments disappear from multiple KZbin channels. Totally innocuous. No rational explanation. Channels for electronics, computers and wrenching. They appear to post, but on edit attempt or page refresh they are gone. So far, though, have not been unsubscribed.

@theLuigiFan0007Productions 2 ай бұрын

Yeah, I've run into that as well. It's the automatic filters removing something it detects as "not allowed". Anything with a url causes it to delete a majority of comments before they post publicly. And once it deleted a comment of yours, it's more "suspicious" of the next few you write from my experience. I don't miss all the phishing comments, but I am pretty annoyed at how often it mistakenly deletes mine... if Google search can verify the safety of links and content, KZbin's comment checker can as well. It's just lazy design.

@theLuigiFan0007Productions 2 ай бұрын

Additionally, the creator can manually review some of the comments and approve them. However, some things just go into the void never to be seen again. And other times, a video gets so many comments you'd need a full time crew to just read and approve comments all day to review them in time. So, I understand why creators don't always bother reviewing anything that gets held.

@blitzroehre1807 2 ай бұрын

I did this many years ago when I needed the unobtanium magic eye 6CD7 (EM34). I used a 6AF6G and the missing amplifier triode section was solved by using a DN2530 N-channel depletion mode high voltage mosfet driving the deflection vane. The second deflection vane was connected to the first via a 50v zener, so when the first sector was closed, the second sector then started closing, exactly like with the original 6CD7. Another good mosfet is the LND150 or the DN2540, the latter good for 400v. Now some folks may chime in why I did not use the 6AE6 as a driver for the 6AF6 : I had a space issue, very small radio 🙂

@scottbrady7499 2 ай бұрын

Young man named Crooks, busy with interaction and Visits from FBI. Director Wray: "May have been glass or metal shrapnel, still investigating it."

@glennk1931 2 ай бұрын

A great video as is all of your videos. I like that old time dated AM radio sound this radio produces.

@alisharifian535 2 ай бұрын

My grandpa had an AEG super 264 W (I think W is for Wechselstrom which means AC power) and his room had a window to the big garden of the house. He used to turn it up very loud and do the gardening or walking around in the garden. As he became older, he turned it even more up :). I managed to take a look at inside of it several times after he passed away. It had expectedly a giant oval speaker and several tubes.

@martinclemesha4794 2 ай бұрын

Shango, I always look forward to your uploads, including your mine adventures and desert radio tests.

@jameswarner3599 2 ай бұрын

I really like this concept of solid state replacements for vacuum tubes. There is nobody making any new vacuum tubes and eventually they will all go gassy as the seals age. Although still plenty around some are getting really pricey especially audio outputs. Would love to see a full resurrection where you make all solid state replacements and a comparison of quality. I always look forward to seeing what the next video will be, love the channel 👍

@Rev22-21 2 ай бұрын

For those like you who aren't afraid to think outside the box this video is very encouraging. One day would you mind illustrating how you equated the plate, cathode, grid and screen for the proper fet connections? Thanks...really enjoyed this one.

@111000100101001 2 ай бұрын

Nice work on building up those solid state replacement concepts. For some who works on a lot of old sets with a limited supply of the rare tubes it would be handy to have a set of solid state replacements to help diagnose a unit.

@directcurrent5751 2 ай бұрын

Good video. CRT is the last tube standing.

@voltare2amstereo 2 ай бұрын

VFD are still made

@KeyboardBuster 2 ай бұрын

And magnetrons

@directcurrent5751 2 ай бұрын

@@KeyboardBuster magnetron is a CRT of sorts :)

@SoundsLegit71 2 ай бұрын

That radio has been unburden by what has been.

@shango066 2 ай бұрын

Because yesterday was today yesterday and tomorrow will be today tomorrow

@FlatBroke612 2 ай бұрын

Top keque. Or is it top cackle in this situation?

@Roland_Tr909_Swing 2 ай бұрын

@@shango066 work those scratchy pots daddy

@danielknepper6884 2 ай бұрын

That was a great quote from camel toe Harris@@shango066

@BrickTop900 2 ай бұрын

@@FlatBroke612Yesterday’s Tomorrow… Now!

@joeycronan2652 2 ай бұрын

Thank you Shango for filling my Saturdays with laughter, knowledge, and just plain good entertainment. I have learned so much in the last 4 years from watching your videos. Thank you Sir

@gabrielleeliseo6062 2 ай бұрын

The only subscription I look forward to watching every week. Thanks Shango!

@vcv6560 2 ай бұрын

"...an estate sale with 100s of them." Suddenly my future passed before my eyes.😁

@bernardsalter5101 2 ай бұрын

I don't believe - am, fm, radio will go away anytime soon. Cable TV has become so expensive I thank more people like me will get rid of cable and listen to radio. I listen to - am, fm, and xm radio. Love your channel .

@damianmuller8350 2 ай бұрын

I want to sincerely thank you for all your content. I have learned a few things. You have given me hours of enjoyment and laughter. Stay healthy, wise, and wealthy if you can. I may be able to donate more later.

@WilliamFontana-b6r 2 ай бұрын

Your content is greatly appreciated. I understand Rumble is the uncensord replacement for KZbin.

@DavidSolimano 2 ай бұрын

I follow him on Odyssey, videos go up at the same time, then pop over here to browse comments

@WilliamFontana-b6r 2 ай бұрын

@@DavidSolimano Perfect, Thank you David. BillF

@mike289homebuilt5 2 ай бұрын

Grumble is based in canada and their courtz review all posting for heinious purpous

@SusanAmberBruce 2 ай бұрын

I'm glad to see you trying to make the solid state replacement tube, you will get better at it for sure.

@erikdenhouter 2 ай бұрын

I never subscribe to any channel, I just visit the really interesting ones every day.

@TruBluYahoo 2 ай бұрын

That video unburdened me by what has been. 😅

@chetpomeroy1399 2 ай бұрын

I believe the tubes in this Tolex covered receiver are *directly* heated, where the heaters in the tubes are also the cathodes. There is an "instant on" effect, similar to transistorized electronics. One could theoretically replace every tube in this radio with transistors, if accommodations are made for voltage and biasing requirements of replacement transistors .

@Rev22-21 2 ай бұрын

Glad to hear you clarify about some of our comments disappearing. 😊

@krz8888888 2 ай бұрын

I’ve been subscribed for probably a decade plus, never had issues with getting unsubscribed

@krz8888888 2 ай бұрын

I think people are mostly fat fingering it

@audubon5425 2 ай бұрын

I did some digging, and Troubador was a store brand for Moore & Evans, produced by Warwick (who later made all the Sears tvs.) I like that style of late 30's portables.

@bigalsmallengines 2 ай бұрын

Really interesting using those solid state electronics to replace a tube. Great video!!! Cheers! 🍻

@jaedenceron1127 2 ай бұрын

Gemini AI has wreaked havoc on poor Pat Boones You tube channel. He was popular in the late 50’s, and got into politics and other stuff afterwards. He is a true patriot, and KZbin can’t have that.

@tarstarkusz 2 ай бұрын

Unapproved thoughts are no longer allowed.

@hestheMaster 2 ай бұрын

The thought police are everywhere on YT! It also makes sure that historical negationism by the "free press" is enacted and enforced.

@NickNorton 2 ай бұрын

This channel deserves way more subscribers. If you are interested in electronics. You need to understand what shango066 is showing you.

@gustavoangelero4068 2 ай бұрын

You are in your best moment, Shango. Your videos are part of our weekly entertainment. Best regards.

@cringemaki 2 ай бұрын

Classic Shango moment at 10:14. _Nothing but the best_ I love this fellow's humor!

@albear972 2 ай бұрын

3:26 That's a gnarly -vacuum- tube.

@ae5hu73 2 ай бұрын

I really like the idea of making solid state replacements for these low voltage tubes. I don't know why somebody didn't think of this before. The HAM radio club (in high school 1978) had a pile of Korean War walkie talkies that we could convert to 2 meters. The biggest problem that we had was getting replacement micro-micro tubes. (I can't remember what they are actually called but the tubes are about the size of your pinky finger). The tubes were normal values but miniaturized. This would have been a great solution to that problem. I don't know why none of the teachers thought of this --- If you wait long enough the answer always comes?

@sgath92 2 ай бұрын

There were a few electronics magazines around the 1978 era that had run articles on this basic premise, though its been so long I don't remember which magazines they were to say how popular they were (I don't think it was QST). One of the best things about the internet is being able to search a wide variety of content by text/keyword where as in the pre-2000s unless you happened to luck across the right issue of the right magazine, finding such a project was not always going to happen. The first solid state tube project I lucked across was in the mid 90s when someone in Japan had done a write up on converting a 5-01A tube Atwater Kent model 20 to solid state, allowing it to be operated off a 9v smoke detector battery. Of course, other than the schematic it was all in Japanese so I had no idea what it was saying. Always wanted to give that project a go.

@mistermac56 2 ай бұрын

There is the Nuvistor tubes that were even smaller and introduced in 1958 by RCA. Other manufacturers followed suit. RCA used them in their color TV sets in the tuning sections until they started moving to 100 percent solid state color sets around 1971.

@bigmotter001 2 ай бұрын

A video that was a video that was a video that made your subs happy! Thanks for all of your postings over the years and take care!

@doogie812 2 ай бұрын

I remember trying to hunt down a 3Q5GT back in 1974. Took me a week.

@rennethjarrett4580 2 ай бұрын

I found this one very unique. I have seen to sub a diode for a rectifier tube but never any other tube till now. The thing is in tube radio sets not many tube are needed, but in a comparable transistor set there are more transistors then the tube version... If conversions are able to do all of the tubes, it proves the transistor set design is over done, since you don't need that many transistors. However I do know many electronic specs claim a diode to be counted like a transistor. So if the tube modified to a transistor design contains diodes that would equal more transistor like parts... So it might not be a win in that regard. But it will allow the tube systems to be able to be repaired even after the tubes are all gone.

@eDoc2020 2 ай бұрын

Part of the difference is transistor sets usually have push-pull audio output for much better battery life.

@MiamiMillionaire 2 ай бұрын

These electronic vacuum tube replacements are great, they keep the old technology running when the original tubes have all gone to air 📻📺👍

@willjackson1955 2 ай бұрын

Very nice Shango! Care to share either schematic or at least the FET part number? I'm cautious about finding one with enough max Drain-Source voltage to withstand the B+

@FranksPlace-jk7pj 2 ай бұрын

Not a big worry in the case of the 3v4, in the transoceanic H500 it only has 24 volts on the plate.

@tedcowart3647 2 ай бұрын

Great video! I've always liked these 40's and 50's battery AM and SW sets. The RCA globetrotter sets were really good performers. I tried a set of the solid state replacements when they first came out years ago in my T-O and wasn't very impressed. Yours seems to work very well. Ive never been unsuscribed from your channel but I have been from Cold War Motors channel several times. Scott from that channel mentions at the end of every video to check and make sure you are still subscribed. Its really going to get crazy with the upcoming events. Thanks! Ted

@jratpirat 2 ай бұрын

I make stupids all the time, usually when I'm working on my 1945 willys MB. I assumed KZbin was unsubscribing me.

@bigcatauna 2 ай бұрын

We’ve been long overdue for an EOL video…..I’ll even donate the pyro

@UDX-340 2 ай бұрын

This ones going to be excellent .thanks shango066 .

@mikefinn2101 2 ай бұрын

I always watch all your videos love saturday morning with Shango always neat stuff love watching thanks Mike

@scottlangille9900 2 ай бұрын

Wow great job rengineering a tube with components a fantastic idea. Mostly last a lot longer. Thanks for sharing. Best regards, from Scott in Nova Scotia Canada

@SeanDamonGreene 2 ай бұрын

I don't just "make stupid", I AM stupid.

@williamsquires3070 2 ай бұрын

What about FM?

@SeanDamonGreene 2 ай бұрын

@@williamsquires3070 Good one !

@f.k.b.16 2 ай бұрын

Now you just need to add one of those old neon glow lamps to simulate the glow of the tube.

@brianmckoon6042 2 ай бұрын

I have thought about buying some of those for my Zenith Transoceanic radio's to replace certain tubes, but after watching this video maybe I'll just stick with new tubes!

@HumourlessPig 2 ай бұрын

I am always astounded at how many AM stations are still out there in other countries. Canada is down to CBC and maybe a few smaller stations. Having 10x the population sure is keeping AM stations relevant in the US and other countries.

@Nick-d6u5e 2 ай бұрын

I would like to watch you build a radio from scratch and take it out into the desert for testing. Someting of your own design with no limit on cost or types of components used. Purely to see how good it could perform whilst we still have stations transmitting. Perhaps it could be funded by us viewers?

@voltare2amstereo 2 ай бұрын

interesting what a complete SS retrofit would go like

@shango066 2 ай бұрын

It was done in the previous video

@ronaldspencer547 2 ай бұрын

Wow! You can make replacements for vacuum tubes!

@darkwinter7395 2 ай бұрын

Just curious - which FET did you use, and did you put a TVS diode across the gate to keep it from blowing from ESD?

@tomtke7351 2 ай бұрын

I'm very much impressed. Hope for greater development of solid state replacement for tubes.

@TapesNstuffS 2 ай бұрын

Nice Kamala style phrasing at the end.

@vcv6560 2 ай бұрын

I'm curious, what resistance do you include to simulate the series filament such that the rest of the 1v tubes get the correct 1.4 ish drive? Thanks.

@shango066 2 ай бұрын

Here's the. Online omes calculator and put in the current and voltage drop you want.

@branhicks 2 ай бұрын

I was unsubscribed last week. Along with dozens of other channels. Luckily I turned my TV on specificly looking for Saturday morning Shango

@hitekredneck109 2 ай бұрын

Im a bit of a fan of those solid state tubes....it keeps old radios alive and those 1 volt tubes mighta well been transistors....they dont light up,get hot or smell like big tubes anyways.

@markmarkofkane8167 2 ай бұрын

My comments sometimes don't show up, and I cannot see what could be offensive in the least. I think they have zillions of keywords that automatically deny your comments. Let's see if this posts. Great video, very interesting!

@danielknepper6884 2 ай бұрын

It's no secret that KZbin aligns with the left so anything that is anti-left they are going to ban

@gretalaube91 2 ай бұрын

Reverse-engineering leads to circuit improvements leads to re-designing the old circuit. It's addictive! RF front end? IF filter stages? Built in 18650 power supply? Synchronous detection?

@401ksolar 2 ай бұрын

Well bot face has unsubscribed me a few times over the yrs but if I don't see your content by sat night I have to search your ch name and re-sub, KZbin is my tool NOT my overseer!!!

@andygozzo72 2 ай бұрын

these high voltage power mosfets have a fairly high capacitance gate to drain, which can reduce gain, especially at higher audio frequencies, it 'may' work better with a bit of boostrap feedback from the source connection to the bias resistor network

@jayster.k.wiseguy 2 ай бұрын

AM----John Miller with baseball~ this is the only reason to seek AM~

@LiquidRadio 2 ай бұрын

8:22 If Shango was purposely unsubscribing users from his channel, then I wouldn’t be posting this comment. 😁

@Roland_Tr909_Swing 2 ай бұрын

Yeah I got unsubbed last week... lucky for me I'm too clever for the deepstate mindcontrollers..Its youtube not him

@sabbath7081 2 ай бұрын

The new normal.

@RafaelBeltran-o9l 2 ай бұрын

can you explain the schematic of the solid state unit, with values resistors, capacitors,

@TommyJensen-pl8qz 2 ай бұрын

That troubadoor radio is cool 👍

@andygozzo72 2 ай бұрын

1A5s werent really used here in the UK, but i do have one USA origin set that uses one, and not surprising it might seem to distort/be low gain, its only capable of about 100mW output! the 1C5/3Q5/3V4 and similar are about 250mW.. i picked up a few 1A5s fairly cheap in the early 90s , luckily

@Roland_Tr909_Swing 2 ай бұрын

Is that amp hum due to improper grounding? By lifting the noise floor you are hearing whats there already but louder?

@christopherkise 2 ай бұрын

I watched the video, and it was a good video.

@romjone4801 2 ай бұрын

Great video, please provide the circuit Information and part information!

@electrifyingvids3545 2 ай бұрын

I knew FETs were used to replace nuvistor tubes in old test equipment, but haven't thought about in a radio with larger tubes

@burntoutelectronics 2 ай бұрын

Its been years since weve seen the Troubador come out

@bigguyprepper 2 ай бұрын

Babe wake up, Shango posted

@frankowalker4662 2 ай бұрын

Nice job with the FET's. If you could get the circuit small enough to fit in the base of the Octal you could glue a dead/dummy valve on top to keep the looks. As for the comments and unsubscribers, that's just YT being YT.

@leetucker9938 2 ай бұрын

I'm still subscribed so I'm happy

@hotpuppy1 2 ай бұрын

Pretty small in an octal base. Might be able to put the glass envelope back on top of it. You can barely see filaments in those tubes anyway so nobody would be aware it has a transistor in it.

@tebbi67 2 ай бұрын

Could it be, that the internal resistance of the FET is lower than that of the tube, and in order to achieve the best sensitivity, the IF stages would need to be tuned? ...thx for the vid

@55benchguy 2 ай бұрын

Hey , are these thingies gonna make my THOUSANDS of tubes worth less ? LOL

@sgath92 2 ай бұрын

When hurricane sandy (or Irene?) flooded parts of Long Island there was a guy on the Antique Radio Forum whose collection got flooded. A surprising amount of his early tube stash did not survive the flood waters (lost vacuum and took on flood water) despite being rescued from that environment very quickly after the disaster. I've heard similar stories about 7 & 9 pin tubes going to air because of corrosion around the pins if stored outside in sheds/barns without ever being dunked into water. In the lab, you can use a glass under vacuum to harvest some noble gases as the glass will keep air out, but not certain nobles. What any of this means for longevity in the next hundred years of these already up to 100 year old tubes is anyone's guess....

@Ronl53 2 ай бұрын

Now you know "What can be " and not burdened by "What has been". 😵‍💫

@jochenstacker7448 2 ай бұрын

10:20 you didn't build it wrong, I'm sure you built it perfectly. You just built the wrong one. 😁🖖

@bones007able 2 ай бұрын

I was surprised to see that a LND-150 MOSFET will replace a 12AX7 by just plugging it in to the tube socket in the right pins

@turle8645 2 ай бұрын

Is something like this possible with something that’s AC powered?

@glennlove461 2 ай бұрын

I'm glad this radio has been unburden by what has been.

@TechGorilla1987 2 ай бұрын

I'm still subbed, but the availability of this video was shadowed. I had to search for our channel to find it. I thought it odd that you had not posted in a while.

@Synthematix 2 ай бұрын

KZbin is destroying itself

@tubeDude48 2 ай бұрын

See: Electronics Old and New. Manuel created a solid state tube.

@Dazzwidd 2 ай бұрын

it's amazing they work, but theoretically should because of the voltages and input impedances etc, but you wonder... shouldn't they get HOT?

@Pixelwaster 2 ай бұрын

I have collected every article and schematic for hollow state to solid state. Only a couple were for battery sets. All of them use discontinued FETs (except the smd J310). Would like to try this, any details?