Big valve

[alejo]

Hello boys, today I see in MercadoLibre Argentina (simil EBay); and see the Very Big valve for sale, OMEGA, New in Box, MODEL TAW-12/20-B-01

http://www.mercadolibre.com.ar/jm/item?site=MLA&id=14954226

and the price is only pesos 250, is arround u$s 83 or Eu 65

I´imagine this in Big SE mono amplifier !!!

Disclaimer: I clarify that I do not have any relation with the salesman

 

[alejo]

Find a datashet in DuncanAmps TAW12/20; is realy a BIG monster valve

Filament 21.5V 78Amp

In Class B

Va 12.000 Volt
Vg -200 Volt
Ia 1.54 Amp
Wa 13500W

Woutput 5000W

 

[newkirklabs]

I think you mean New In Crate!!

Here is a data sheet if anyone is interested

http://www.mif.pg.gda.pl/homepages/frank/sheets/030/t/TAL12-20.pdf

 

[serengetiplains]

I´imagine this in Big SE mono amplifier !!!

SE's overrated. I'd go PP with this baby!

 

[audiousername]

Max Plate dissipation 18,000W

Max grid dissipation 500W

Filament Current.... 78A - SEVENTY-EIGHT AMPERE!

My goodness, someone using this monster in an amp really needs help.... It puts the GM100 to shame with its puny filament current of 18A 😀

This thing will be dissipating about 1.7kW in its filament alone!

 

[Prune]

Bah, forget your little tube. How about this for a change:
http://www.cpii.com/eimac/catalog/135757.htm

3CW150000H3
Plate dissipation 150,000 W
Grid dissipation: 1500 W
Heater: 10 V, 312 A

Now that should be able to drive my headphones!

 

[Circlotron]

My next headphone amp will have these.

Plate Dissipation (Max.) 1,000,000 Watts
Filament/Cathode Thoriated Tungsten
Voltage 16.3 Volts
Current 600 Amps

http://www.cpii.com/eimac/catalog/138128.htm

 

[Prune]

You and your damn tetrodes. I'll stick to pure triode power...

I'd be wearing a lead shield around my crotch any time the 22.5 kV is applied to that beast. Enjoy your X-rays, boyz.

When I first read the 'Boris...' in your signature, I momentarily thought you were referring to me (my first name is Borislav), and I was on my way of composing a witty reply...


If you really want a tetrode, try this guy:
http://www.cpii.com/eimac/catalog/138284.htm
2.8 MegaWatts. Can't ... stop ... drooling ...

 

[jlsem]

My next headphone amp will have these.

http://www.cpii.com/eimac/catalog/138128.htm

I wouldn't do it. The sockets are a little hard to find.

John

 

[SY]

What is the transconductance? I think this tube would be dandy in a phono preamp.

 

[Prune]

I posted this link to another forum, Headwize, and I love quake's reply:

In a past life I worked on high power transmitters....Used similar tubes....Troubleshooting was a breeze - just look for traces of vaporized components!

😀

 

[Geek]

Sounds like the old Yaesu and Kenwood tranceivers - cathode ans screen resistors literally vaporize when the HAM's accidently tried to load up 80M while still on the 20M dipole 😀

 

[eeka chu]

In a past life I worked on high power transmitters....Used similar tubes....Troubleshooting was a breeze - just look for traces of vaporized components!

😀

 

[Circlotron]

Raad the "fine-print"

If you really want a tetrode, try this guy:
http://www.cpii.com/eimac/catalog/138284.htm
2.8 MegaWatts. Can't ... stop ... drooling ...

Did you notice in the suggested operating conditions at the bottom of the page that it (or a pair?) need 120kW of grid drive to make them go full blast?

 

[Giaime]

maybe a push pull of 1000 KT88 will do to drive these in my guitar amp? You know, I play little loud...

The problem is: how will I wind my own power transformer? and the output one? should I use a 1-meter diameter wire? Glass insulated?

This thing is getting insane....

Why don't we make this the "Put your largest valve here" kind of thread? Like, you know, "Mine is bigger than yours...."

 

[Sch3mat1c]

Cuz I would lose right away... I'll raise you a pair of 4CX250R (highest Pd), a C3J (highest power capacity) and an RK-836 (DHT diode, ST-18 or whatever envelope; largest).

Tim

 

[resident]

@Giaime
I can find you the trannies but I don't know how to send them to you!!!
I'll ask UPS tommorow.OK?
😀

 

[Giaime]

Thank you! But I already found a 380kV-10kV 2MW tranny behind my house, in an abandoned factory.... Might be useful... but that's just the filament amp....

 

[845]

RS2002

On my workplace I meet this baby every day

 

[845]

Another pictures