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Old 12th Oct 2017, 5:01 pm   #1
David Simpson
Nonode
 
Join Date: Mar 2008
Location: Aberdeen, UK.
Posts: 2,859
Default CT52 Oscilloscope

Well, I've certainly acquired a wee gem of an oscilloscope. In mint condition for a 1952 item, and fully functional. Many thanks to Mark James who sent it up to me last week.
Removed the AC PSU first & slowly wound it up on a variac - all transformer sec. voltages spot on. Plugged it back in & again slowly turned up the variac - all DC voltages spot - on. Obviously the selenium stack rectifier would give cause for worry, but has run fine for two hours & EHT, and HT voltages all spot - on.
A bit of a clean & polish is all that is needed - then it can take its place alongside my other vintage scopes.
Does anyone know who made these scopes ? The workmanship is excellent. Oh yes, the gratitude is missing, does anyone have a spare one, please ?

Regards, David
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