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Chris55000 · 24th Apr 2020, 4:16 pm

Hi!

Be very careful if you do that because the oscilloscope will be LIVE to the mains supply if you try and use a Variac direct – you MUST also include a suitable mains isolation transformer between the mains and the Variac., or a suitable low voltage Stepdown transformer with isolated secondary windings between Variac and 'scope!

Chris Williams

24th Apr 2020, 4:16 pm	#13
Chris55000 Nonode Join Date: Aug 2007 Location: Walsall Wood, Aldridge, Walsall, UK. Posts: 2,868	Re: Cossor CDU150 rescue Hi! Be very careful if you do that because the oscilloscope will be LIVE to the mains supply if you try and use a Variac direct – you MUST also include a suitable mains isolation transformer between the mains and the Variac., or a suitable low voltage Stepdown transformer with isolated secondary windings between Variac and 'scope! Chris Williams __________________ It's an enigma, that's what it is! This thing's not fixed because it doesn't want to be fixed!