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  1. #1
    actually, no I'm still a little puzzled.

    The schem shows two 9V batteries in series (connected back to back) then uses a rail splitter to provide a virtual ground (the mid point of the battery voltage) ....I'm curious why bother, why not just use signal ground which will always be pretty close to mid voltage anyway (yeah, sure the batteries might not fade with the same 'profile' but there won't be much in it to warrant the extra expense & component count of the virtual ground IC)

    Edit: Actually the schem just shows a single 18V single battery! (but I'm assuming that will be implemented by 2 x 9V batteries?)
    Last edited by HankMcSpank; 17-07-2013 at 07:59 PM.

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