this is really neat I have been working with 12au and 12ax7s for 18 years I have them figured out vfds are out of my design league but something interesting to look up is the Korg new tube wish is a vfd dual triode that sells for 50 dollars on ebay and has the circuit board that it fits into really cool concept.
Good Video. I think the VFD may be used just as a Preamp Stage, ando therefore, something like the good old TDA2003 for Power. But, anyway, you had a point and made it work. Good Job.
It was not, but it does not matter too much. I have heard that AC causes a better heat distribution across the filaments, but I have not tested it yet. The anode and grids are powered by DC from a different transformer coil that was rectified.
A company by the name of Korg is now producing VFD amps that are designed as such, run on low power. VOX has designed guitar amps that make use of these Korg VFDs and are capable of up to 50 watts of power. Price is about 200 dollars for these amps.
I think the reason why the first VFD you showed didn't work. Is because its a different design woth no grid, onlu an anode and cayhode like a diode. It was probably run like a nixie tube. I have one of those gridless VFD, it sicks that I can'f make an amp out of it.
Why not use only one digit per tube? that way you can use a single display,. maybe you'll have enough digits left over to create something else with them.
Yeah cool... Korgs nu-tube ain't that new..lol.. and just like korgs offering, they don't have much gain, although I suspect these aren't as microphonic, good work anyway :-)
this is really neat I have been working with 12au and 12ax7s for 18 years I have them figured out vfds are out of my design league but something interesting to look up is the Korg new tube wish is a vfd dual triode that sells for 50 dollars on ebay and has the circuit board that it fits into really cool concept.
I just pulled my second VFD out of a Philips DVD player thing.Can't wait to try this out.
That's cool that you can use a vfd as an amp! Going to have to try that
Wow never thought I could use VFD as an amplifier.
Korg brought something similar to market recently - "Nutube" is a VFD amplifier tube for audio
Awesome video man. Would you be willing to share your schematic in file form? Thanks in advance for your time!
Love from Canada :)
Good Video. I think the VFD may be used just as a Preamp Stage, ando therefore, something like the good old TDA2003 for Power. But, anyway, you had a point and made it work. Good Job.
I'm actually building that right now, but I'm going to be using a TDA2030A in a bridged mode.
this is very good. keep doing cool maker stuff.
About the low output ¿does it have b+?
If it has use 230 volts, yes it could be dangerous but it sould lift up the gain a little bit
Good video! I looked very good. What do you think of Jimmy Hendrix? If you like my guitar and harmonica you will be happy.
its cool
but the input protection is not needed
you already have decoupled the hv from the audio source by means of a capasator
This is the coolest kid.
try using a larger plate resistor on your first stage. that will increase its gain.
Hello friend, is the transformer used to feed the Filaments or the Anodes and Grids? And it was not rectified? Thanks
It was not, but it does not matter too much. I have heard that AC causes a better heat distribution across the filaments, but I have not tested it yet. The anode and grids are powered by DC from a different transformer coil that was rectified.
@@TannerTech Okay, so this is a small transformer, say, around 3 volts AC? Thanks
can this work withone display ?
+keza ELECTRONICS Yes, it just will not be as loud. The more displays, the more amplification stages your amp will have, therefore making it louder.
Tanner Tech ok thx
A company by the name of Korg is now producing VFD amps that are designed as such, run on low power. VOX has designed guitar amps that make use of these Korg VFDs and are capable of up to 50 watts of power. Price is about 200 dollars for these amps.
The nuTubes are only being used as pre-amp tubes, the 50 watts of output power is from a class D amp.
Ibanez threw some of those nutubes into their new tubescreamer.
@@AndrewStonerockстранно, ведь tubescreamer - это всего лишь усилитель перед усидителем, чтобы лампы сразу разогнать более громким сигналом
I think the reason why the first VFD you showed didn't work. Is because its a different design woth no grid, onlu an anode and cayhode like a diode. It was probably run like a nixie tube. I have one of those gridless VFD, it sicks that I can'f make an amp out of it.
Well the output transformet has to match the impedance of your "tube" ... Otherwise it can't get a decent power level
Where the hell is your volume potentiometer?
Now do the same but using CRT displays!!
That would be cool tho imagine watching sound
you should revisit this and use higher filiment voltages.
Sure thing, I may also use many more VFDs. I have acquired a lot recently.
Mariachi band😂😂😂 (grupo intoable) ...well expained thanks hopefully i dont kill myself🤔
excelente amigo
It would make a good pre-amp rather than a power amp.
Why not use only one digit per tube? that way you can use a single display,. maybe you'll have enough digits left over to create something else with them.
Exactly, why not ?
But using a BFF is not that efficient to be honest, but it’s still a cool project!
VFD = Korg NuTube
I have a VFD from a VCR, might give this a whack.
See korg doesn't have anything special they just made one that has two bars rather than numbers or letters
Super
Yeah cool... Korgs nu-tube ain't that new..lol.. and just like korgs offering, they don't have much gain, although I suspect these aren't as microphonic, good work anyway :-)
OMG!
Mick Jagger