[Amps] AL-811 Tube Swap

[Kim Elmore]

The temperature for sublimation of graphite is about 4000K. It’ll be bright white at that temperature and the envelope will likely be melted. 

Kim N5OP

"People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith

> On Apr 29, 2021, at 10:28 AM, Nidhog <robrk at nidhog.net> wrote:
> 
> Get out your oscilloscope and look at it.
> 
> A $25 hamfest special is all you need.
> 
> Sent from my iPad
> 
>> On Apr 29, 2021, at 11:21, Jay Sturtevant <k2ztdx at gmail.com> wrote:
>> 
>> Could the graphite plate of a 572B transform from a solid to a gas by
>> sublimation?
>> 
>> I would want to know a rough probability of damaging the finals (gassy) by
>> driving them with an input using audio compression or data in a contest or
>> bench test. Doesn't compression bring thd average output closer to peak
>> output? What's the area under the curve look like?
>> 
>> Perhaps some of the experienced contributors could give soe guidance.
>> 
>> Thanks for your help!
>> 
>> Jay, K2ZT
>> 
>>>> On Wed, Apr 28, 2021, 1:16 PM Richard Solomon <dickw1ksz at gmail.com> wrote:
>>> 
>>> I have an old AL-811 on the Test Bench
>>> I use when I need a little more starch for
>>> test purposes.
>>> 
>>> I thought about replacing the 811's with
>>> 572B's.
>>> 
>>> Any pitfalls on that idea ?
>>> 
>>> Tnx, Dick, W1KSZ
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