Hello, I have a pb with a toroidal transformer which gives 45/0/45 V AC which is a bit higj for my UCD 400. 42 ou 43 V would be better. Is there any possibility to lower this voltage instead of a variac in the primary. I think to a post in a forum, but I am unable to find again. It was suggested to wind a external winding on the core (this I am sure) and connect it in reverse phase to lower secondary voltage (this is what I remerber, but here I ma not sure). I tried, but the wire was too thin and get very hot. Maybe some resistor should be put in series with the new winding to limit current ?
In general, what do you thing of this approach.
Of course, I can order again a new transformer, try to find the correct voltage and wait for x weeks to receive at worse an unusable transfo (last order before this one…).
Thank for reading me, I hope you could help me. Philippe
In general, what do you thing of this approach.
Of course, I can order again a new transformer, try to find the correct voltage and wait for x weeks to receive at worse an unusable transfo (last order before this one…).
Thank for reading me, I hope you could help me. Philippe
Try to check if your transformer has 200, 220. and 240V ac input, then try to input from the highest 240v if your local supply voltage is lower than, or series a resistor to consume a bit from the primary source.
SUGGESTION IS FOR YOUR REFERENCE, IT MAY CAUSE YOUR CIRCUIT BETTER OR WORSE.
SUGGESTION IS FOR YOUR REFERENCE, IT MAY CAUSE YOUR CIRCUIT BETTER OR WORSE.
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