5 Aug
2014
5 Aug
'14
2:06 p.m.
On Aug 5, 2014, at 4:29 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
...
I've jsut worked on an istrument (nothing to do with classic computers)
which has a small (3" or so diagonal) slectorstaically-deflected CRT in
it. It has 9 pins, no HV connctor aor side pins on the CRT. Jsut 9
connections. Of coruse 4 are for the deflection plates. The got
everythign else onto 5 pins by (a) not having a control grid and (b)
linking cathode ot heater intenrally. That means the 5 connections were :
heater/cathode ; heter ; first acclerator anode ; focus anode; fianl
accelerator anode. Odd?
My father had some ham radio related device with a one inch CRT in it. That basically
looked like a 6L6 with a white top ? including having an octal socket (8 pins). That?s
even harder than the device you described.
paul