15 Aug
1999
15 Aug
'99
2:41 p.m.
<I think we'd probably call an OA2 a 'valve' as well, although talking
<about 'stabiliser tubes' or 'cold cathode tubes' seems to be common
usage
<in UK books as well (as is 'stabiliser valves' and 'cold cathode
valves').
<
<We certainly talk about 'counting tubes' when refering to dekatrons,
<trochatrons, etc. Never seen them called 'counting valves'. And CRTs are
<certainly 'tubes' over here.
Lest we for get the 2d21 tyratron and the larger cousins. Cold cathode
triodes mostly replaced with SCRs.
Allison