Building My Own Oscilloscope

[pwdrive]

I built a 'scope many years ago using an old 3BP1 CRT. . . . The CRT supplies were mains derived (UK 50 Hz) and I don't recall any ripple effects on the CRT display.
Lawrence.

That brings back memories: yes, so did I: sounds like a very similar cct. to what I used. Mine was based on a design from a Babini book: was yours?
I well remember the PSU 'arrangements' though - again, similar to yours. Thinking about it now, in retrospect, it's remarkable that it didn't kill me! But when you're young and bursting with unbridled enthusiasm . . .

Al.

Can't remember Al, I seem to remember a couple of EF50's in it somewhere, I think the EHT was around 750 V straight from a doubler off a 350 V HT winding.

Lawrence.