Quote:
Originally Posted by Wonjee2
I'm trying to get my head around valves so far a 96 series and a 91 series. There must be more
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There's also the US equivalents- type nos beginning with 1 like 1T4 = DF91.
Valve types- although the 91 and 96 series do hang together, there are others like DL94, DAC32 etc. For Mullard/Philips the initial letters tell you heater type and valve configuration then the numbers give base type followed by just an id number. See:
https://en.m.wikipedia.org/wiki/Mull...be_designation
to get the full indigestion!
So for example:
D 1.4V filament
K Heptode
9 B7G base
1 ID number
D 1.4V filament
A Small signal diode
C Triode
3 Octal base
2 ID number
ad nauseam!
Anorak off now......