26 Jan
2020
26 Jan
'20
9:15 a.m.
I think it was later they made an electron beam
digitizer
storage scope. The scope tube created a fan beam that was
deflected by single-axis deflection plates. The target had
patterns of stripes that decoded the beam into a binary code
that was then recorded in a digital memory. So, the fan
beam of electrons and the target formed the ADC!
That family of tubes is called an electron bombardment semiconductor.
The target is actually a semiconductor wafer with an array of diodes
to sense the position of the deflected swept beam, arranged in a Gray
code. I did a video on one of the tubes sometime ago on my Youtube
channel "uniservo".
--
Will