Tek 555 was Re: Need pointers on Oscilloscopes
ard at p850ug1.demon.co.uk
Sat Jun 10 17:03:05 CDT 2006
> I have a couple of small scopes, for example the Cossor 1039 here:
> which has three valves as well as the CRT, and was intended for TV service.
Somewhere I have the issue of Practical Television magazine which gives
construction details for a 1 valve + CRT scope. OK, there are some
semiconductor rectifiiers in the PSU too. The valve is for the timebase,
the Y input goes straight to the CRT plates. But it was useable for the
signals in vavle TVs of the time, and a lot better than nothing.
> really like is a 549, if anyone with in a 100 miles of London has one they
> no longer want :-)
Woudln't we all :-)
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