I am here.... I am not dissapeared, just had some business abroad that
needed minding.
I am still interested,
please continue
-t
Iain Churches" <IainNG@[EMAIL PROTECTED]
> wrote in news:824Pj.340419$G71.82199
@[EMAIL PROTECTED]
>
>
> "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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