>> From: Rich Measures <measures@vc.net>
To: <amps@contesting.com>
>> Date: Thu, 10 Jul 97 12:39:24 +0000
>
>> >My question was"does the TL-922 use a series or parallel filament
>> >circuit?". You stated the only difference was the transformer
>> >"style".
>> >.
>> - I measured the inrush current in each tube with a HP 1708 oscilloscope.
>> Did you? It matters not whether the filaments are fed in series with
>> 10v or in parallel with 5v. What matters is the measured inrush current
>> in each filament. The SB-220 is within Eimac specs. The TL-922 is not.
>
>I take your response as indicating the filament circuits are indeed
>different. The TL-922 places the filaments in series, ...snip...
The center-tap of the 922's 10v filament transformer winding connects via
an RFC to the common point of the series-connected filaments---so each 5v
filament is esssentially fed from a 5v source.
>
>> BTW, Mr. Rauch, I'm still waiting for you to publish the letter that you
>> alleged restores Mr. Miklos to the position of "R+D Engineering Manager"
>> at Eimac's Salt Lake City facility---a position that their personnel
>> department said he did not hold during his employment.
>
>Anyone wishing to see a copy of this letter, ...snip...
Why not publish the alleged Eimac letter on the Web? If an Internet
ignoramus like me can do it, why not?
>>. ..... As I
>> recall, you stated that Mr. Miklos was going to show up here In January.
>
>Mr. Miklos, the former director of R+D at Eimac-Varian in Salt Lake
>City, is active on internet now Rich. ...
According to Alta Vista, this Mr. Miklos is NOT active on a USENET
Newsgroup.
>I have no control of his
>activity, but it is clear after he read a few of your poison pen
>posts he decided to stay far away from you.
>
Checking out CVs is only poisonous to prevaricators.
>Scratch one very useful guy to all of us (except you) on this
>reflector.
>
Miklos would be useful to me. I would like to ask him some questions.
>For an example of why someone might avoid contributing, we need
>only look at the long drawn out SB-220 transformer nonsense.
>Anyone curious should look at the ARRL Handbook's section on
>transformers ...
The issue is current, not current limiting transformer design. So far,
it appears that I am the only person who measured the filament inrush
currents with an oscilloscope. Who is the person who wants to talk about
the nitty-gritty of how current limiting transformers are designed?
R. L. Measures, 805-386-3734, AG6K
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