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Freeview/SKY quality
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The Natural Philosopher
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tony sayer wrote:
In article ,
writes
tony sayer wrote:
In article , Bob Eager
writes
On Tue, 7 Sep 2004 23:37:01 UTC, tony sayer wrote:
Nostalgia...
And the AF115 for the VHF or was it 114 ???
And the AF139 in yer TV amp
Them were the days...
So who remembers EF91s...EL91s...and I forget the others...
EF.* that was some sort of 6.3 volt heated triode wasn't it?.
Recall the EY51 the wire in EHT rectifier 'tho and the EB91 that double
diode thingy?...
No - correct about the E, 6.3 volt indirectly heated cathode, but the
F means pentode. It's C for triodes (e.g. ECC81, ECC82 and ECC83 the
ubiquitous double triodes)
I'm indebted to me 'learned friend....whos got a better memory than I!..
P was that series connected heather arrangement 100ma IIRC and
F was pentode and
Y was a 'wectifier
whatever was a tetrode?.....L or summatt!...
No, EL 34/84 were power pentodes.
I think the L means 'power'
KT66 ws a beam terode, but thats yank speek.
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