Making a dual rail +/- power supply with two lm317 and no lm337 A digitally controlled dual tracking power supply — ii – kerry d. wong 0-60v dual variable power supply circuit by lm317-lm337
A Digitally Controlled Dual Tracking Power Supply — II – Kerry D. Wong
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Dual power supply
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A Digitally Controlled Dual Tracking Power Supply — II – Kerry D. Wong

When split supply from a single gives uneven rail voltages... - diyAudio

Dual-Rail Power Supply
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