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Forum Post: capacitors in single polarity split rail supplies

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Hello all,

A novice question. I want to use a TLE2426 rail splitter in conjunction with a BUF634 op amp buffer to create a split power supply (half my battery supply voltage) for use in testing/prototyping op amp circuits. I have seen numerous circuits like this which incorporate capacitors, eg, a 220 μf across the battery in front of the TLE rail splitter, along with other capacitors downstream of the op amp buffer.

Most references give little information about which capacitors are helpful (or even needed), or how to calculate the sizes of any capacitors  which should be used. Any light someone can shed on these two issues would be greatly appreciated.

Thanks


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