"Eeyore" <rabbitsfriendsandrelations@[EMAIL PROTECTED]
> wrote in message
news:480CC1F9.A00E06B3@[EMAIL PROTECTED]
>
>
> Iain Churches wrote:
>
>> Both Tynan and Eeyore seem to have disappeared.
>> Perhaps into a thermionic vacuum:-)
>
> Well ... Tynan disappeared first.
A couple of people suggested to me that the whole
thing was a troll, but it was such an interesting idea,
and made the great minds in RAT put on their
engineer's hats. So troll or not, it was worthy of
discussion.
> I haven't posted here for a bit since
> the place had collapsed into one of the usual pissing contests again
Isn't that about par for the course on Usenet groups generally?
> and
> I didn't see any interesting threads.
So start one:-) You are one of the better technically educated
people here!
Can I suggest a topic for you? A current limiter for tube heaters.
People are keen to use voltage regulation, which doesn't seem to
me to be so im****tant. Heaters are specified at +/- 5% so
anything between 6V and 6V6 for a 6V3 heater is within tolerance,
and with a wirewound pot between two 'lytics one can get it spot on.
But heaters draw huge currents at switch on. Do you have a circuit,
using those funny black things with ****ny legs, that could current
limit? Two circuits would be of interest. One at say 1.2A
(a pair of B9A's) and one at 3A (a pair of EL34's)
While RAT is quiet, I am using the time learning how to make
prof-quality PCBs ! (Gosh, is that a capital offence here?)
Regards to all
Iain
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