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Virtual Ground (regulated!) - and Rail Splitter Circuits! - Page 9

post #121 of 123

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

post #122 of 123

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 ...

post #123 of 123

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. 

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