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Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

The end of tubes?
The end of tubes?
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Old 6th June 2018, 12:40 AM   #41
bluerooster is offline bluerooster
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Quote:
Originally Posted by Bigun View Post
I collect valves here and there as the opportunity arrises and have the one shown attached, a tetrode not a triode. As it needs a 100 Amp heater I don't expect to be using it soon.
An old "pole pig" will feed it nicely. Now finding a suitable input choke would be another animal.
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Old 6th June 2018, 02:37 AM   #42
gabdx is offline gabdx  Canada
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It is simple but costly V1505 at 2.5kv its alright. Just cannot find the tube anymore.
Otherwise you will have to resort to // a few tubes for a so so result.
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Old 6th June 2018, 02:38 AM   #43
JMFahey is offline JMFahey  Argentina
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Quote:
Originally Posted by bluerooster View Post
An SS kilowatt amplifier is way complicated, while a kilowatt tube amp is quite simple.
You-must-be-joking

This is a 1000W tube amplifier.

Click the image to open in full size.

It is way larger than it looks in a picture, those are not KT88 or similar but 813, now scale your mental image up by 3X or 4X

Click the image to open in full size.

Dont worry, supply "only" runs at 2500V DC .... just what the Doctor ordered for a homemade:

Click the image to open in full size.
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Old 6th June 2018, 03:51 AM   #44
gabdx is offline gabdx  Canada
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nice parallel push pull.

the 813 is a toy compared to the V1505
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Old 14th June 2018, 04:17 PM   #45
Traian B is offline Traian B  Romania
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http://www.cpii.com/docs/datasheets/78/8974.pdf


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