On Fri, 28 Feb 1997 00:14:24 +0000 Ron Hooper <ab4ru@stc.net> writes:
>>
>> In a message dated 97-02-26 18:34:20 EST, k0wa@southwind.net (Lee
>Buller)
>it
>sounds. The graphite plate is used a lot in RF sealing equipment. I
>junked down several machines a few back, all used carbon plate tubes.
>We had some equipment that was used for sealing baby diapers. I forgot
>the number's but were Amprex, glass envelope about the same size as
>3-500's and 3-1000's. All were low mu triodes. I think overload is the
>main reason for that type of design also.
>Ron W4WA
I'll bet you that those tubes were 5868's Ron. Very common in that
service. About the same size as 3-500's but with a 3-1000/4-1000 base. A
great source for cheap sockets at least!
73....Carl KM1H
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