[Ahimgeon]

Hello, I lift the old topic. I would prefer to assemble this Rail Splitter because ""rock solid" virtual ground". However, there is a little offset of zero potential, -17.8 vs 18.2.  Unfortunately under load(300-500ma) i have a no little  skewness of voltage, like -17.3 vs 18.7. Vin 36v, r1-r2 6.8k or perfect 8 - no matter.  What can be wrong? I have attached a diagram, but the error did not find it ...
http://imgur.com/EeqOYR1

 

[Ahimgeon]

Hello, I lift the old topic. I would prefer to assemble this Rail Splitter because ""rock solid" virtual ground". However, there is a little offset of zero potential, -17.8 vs 18.2.  Unfortunately under load(300-500ma) i have a no little  skewness of voltage, like -17.3 vs 18.7. Vin 36v, r1-r2 6.8k or perfect 8 - no matter.  What can be wrong? I have attached a diagram, but the error did not find it ...

 

[buggalugs]

You can trim the voltage up or down by introducing a trimpot in either R1 or R2 (of course reducing the value of the appropriate resistor accordingly).
This circuit does work but nowhere near as elegantly as Wakibaki's contribution to this old thread. His circuit is cleaner and rather better sonically. 

 

[FritzS]

Please take a look to
http://www.diyaudio.com/forums/headphone-systems/304015-better-railsplitter-virtual-ground.html
 
Two options about railspiltter
.

 
.
What are the better way?

 

[Rroff]

Hello, I lift the old topic. I would prefer to assemble this Rail Splitter because ""rock solid" virtual ground". However, there is a little offset of zero potential, -17.8 vs 18.2.  Unfortunately under load(300-500ma) i have a no little  skewness of voltage, like -17.3 vs 18.7. Vin 36v, r1-r2 6.8k or perfect 8 - no matter.  What can be wrong? I have attached a diagram, but the error did not find it ...


http://imgur.com/EeqOYR1

 


Double check you've got the LM336 the right way around.

I've built the full version with the 1085 - held the rails very tightly with less than 1/10th of a volt difference IIRC - seemed to work well but since I've either used a TLE2426 with op amp ground buffer or DCP DC-DC POL (dual output) w/ LM317/337 regs.