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Old 5th Jan 2012, 7:01 pm   #18
IanF397
Retired Dormant Member
 
Join Date: Sep 2011
Location: Hatfield
Posts: 7
Default Re: Cossor CDU110 'Scope: Brightness Probs.

Hi glowing anode,

What exactly are you suggesting here ?

If you mean power the whole scope from the variac then surely all of the scope voltages will increase.
Even if they are all regulated then you may stress the mains transformer by applying too many volts to it.

If you mean attach the variac directly to the heater terminals, then there are TWO points that should be considered.

1) Most variacs are NOT isolated from the mains.

2) Another contributor suggested that the heater is running at -1000volts, was it?

I think that this suggestion might prove to be a bit dodgy.

IanF
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