Guys,
I have AVR and working but the output is some kind a higher than expected: 220V becomes 260V; 110V becomes 130V...What do you think I should do about it? Do I have to put extra resistors to reduce voltage? Thank you and God bless..

 

It is probably something that was done wrong in the schematic or the program source code.

Why don't you post both the schematic and your source code?

Please include your source code in a file in .txt format (use the .txt extension so that it will attach)

Please post your schematic in .png format as an attachment.

Use the "Go Advanced" button below the reply box, then "Manage Attachments".

 

Could it be that mains voltage is expressed as RMS, or effective value. To get a peek value of a RMS value you must multiply with square root of 2.

 

There's a voltage sensor inside that thing. Look at the board that controls the transformer wiper motor. Some models have adjustable settings, some don't. And be careful, electricity kills.