Small voltage deviation at positive and negative rail

2Bak · 14th December 2003, 07:20 PM

I am rebuilding my IGC with a more powerfull PSU. I use two 250VA trafos each with single secondaries.
Trafo 1 gives 25,6v AC secondary and trafo 2 gives 25,4 v AC.
After rectification this means a small voltage difference in positive and negative rails.

Does the LM3875T compensate for this? Will I get DC offset?
Please advise.

The circuit is here
http://www.diyaudio.com/forums/attac...&postid=279063
http://www.diyaudio.com/forums/attac...&postid=279064

/Jan

peranders · 14th December 2003, 07:42 PM

1 Yes
2 No, not more because of that but you will get some no matter what you do. Check the datasheet for this info.

14th December 2003, 07:20 PM	#1
2Bak diyAudio Member Join Date: Apr 2002 Location: Denmark	Small voltage deviation at positive and negative rail I am rebuilding my IGC with a more powerfull PSU. I use two 250VA trafos each with single secondaries. Trafo 1 gives 25,6v AC secondary and trafo 2 gives 25,4 v AC. After rectification this means a small voltage difference in positive and negative rails. Does the LM3875T compensate for this? Will I get DC offset? Please advise. The circuit is here http://www.diyaudio.com/forums/attac...&postid=279063 http://www.diyaudio.com/forums/attac...&postid=279064 /Jan

14th December 2003, 07:42 PM	#2
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	1 Yes 2 No, not more because of that but you will get some no matter what you do. Check the datasheet for this info. __________________ /Per-Anders (my first name) or P-A as my friends call me

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