The Local Supply Voltage Regulation
A high qualitiy voltage regulation must be built using high quality parts. It is however no longer necessary to use discret semiconductors as there are now very good integrated voltage regulator ciurcuits available. I chose the adjustable regulators LT1085 (positive) and LT1033 (negative) which are compatible to LM317/LM337. The standard fixed voltage regulators of the 78xx and 79xx series produce much higher noise and have worse ripple suppression, although you can find those even within highend preamplifiers (Bryston 25 BP). Link
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Flyback Driver Circuit with 2N3055
High Current Regulated Supply by LM317
0-30 V DC Power supply with current control 0.002-3 A
High voltage spill equal DC 900V
