For audio use, a quality PSU is always desirable and often required.

Some go as far as to say that the PSU is the most important part of an audio circuit.

The section below contains articles related to power supply basics.

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Power supply basics

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PSU Q&A

77392-200[1]Capacitor ESR
LessCapIcon

Too little capacitance

 

The section below deals with “filtered” power supplies:

CC

Capacitive Filter

CRC

C-R-C Filter

CLC

C-L-C Filter

Cx

Capacitance Multiplier

 

The section below deals with IC regulated power supplies:

78xx

78xx Regulator

317

317 Regulator

 

The section below deals with constant current sources / current limiters:

CCS_Symbol

Constant Current Source
Overview & Investigation

CSE_Symbol

Constant Current Source
Explained

 

The section below deals with discrete regulated power supplies:

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High power Zener
shunt regulator

ZenSeries_HigherPower_Symbol

High power Zener series
regulator type 1

ZenSeries_HigherPower_Symbol

High power Zener series
regulator type 2