The circuit is for a dual channel profile generator using a Nano board and two DAC modules. rest are power supply and level shifting from 0-5 to +/-10V .
My query is on the power supply. If you study it, you can see that the +ve 12V is loaded with the supplies to Nano + DAC modules + OpAmp power ; while the -ve 12V is loaded only with the OpAmp power supply.
Will I have any problem due to this load imabalance on the split Power Supply ?
Thanks
yes.
Your circuit to create a "0v" line has an impedance of 5 ohms. And is current limited by the op amps.
Also you have the risk of the G and (unlabelled) 0V line being shorted.
It would make much more sense to use voltage regulators and/or buck/boost converters to provide the voltage rails you need. The -12 as you say will need little current.
You know, there was a reason I linked you to a bipolar DC-DC converter in your other thread. The amount of time you're going to waste getting these virtual ground "solutions" to work is probably worth more than the $10 for the converter!
If you don't want to spend the $10, you may be able to use a MAX232 to generate the negative voltage. I say "may" because I don't remember how much current you can draw from it.
Thought the power supply was already discussed here.
Vin of a Nano needs 6volt minimum.
If you have a reliable 5volt, then connect it to the 5volt pin.
Leo..
No, although that would work if it provides enough current.
This is the link I posted in that thread. It will do what you need in a single component. They (and similar devices) are also available in through-hole if the SMT version is a problem (although the pins on the SMT are big enough to solder wires to).
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