>
>
>Subject: Re: [AMPS] [Fwd: Inrush Current -:)]
>
>
>> >As a matter of practice, in the interest of protecting a very expensive
>> >tube, in my home brew 2 meter 8877 amp, inrush current limiting is
>> >provided. A correctly designed, not over rated, filament transformer
>> >will do the job nicely. However, if the current rating of the filament
>> >transformer is too high, certainlly inrush current limiting is strongly
>> >advised. (EIMAC makes a point of this.)
>> >
>> Eimac makes no such point in the 8877 specs.
>>
>> >.....
>>
>> - Rich..., 805.386.3734, www.vcnet.com/measures.
>
>Eimac does not recommend or even acknowledge the "advantages of
>nichrome" suppressors in any of their literature.
I have never seen an Eimac Engineering Bulletin that discusses parasitic
suppressor design. According to Paul Pagel, Reid Brandon stated that
Willis B. Foote was not authorized to discuss the problem of 8877 gold
sputtering with yours truly. .
> It just seems to help
>in some applications. Manufacturer's literature should not discourage the
>use of good engineering and operating practices. Hams must take precautions
>that commercial services need not bother with, to make designs that survive
>the rigors of intermittent multi-band use.
>
What is the cold-resistance of an 8877 heater?
cheers, Phil
- Rich..., 805.386.3734, www.vcnet.com/measures.
end
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