Below is stereo audio amplifier circuit based n single chip STK465. The Power IC will deliver 30W power output on each channel.

Schematic diagram:

STK465: 30W Stereo Audio Amplifier circuit diagram

Component Part list:

R1 = 1K
C1 = 1uF/35V
R2 = 3,3K
C2 = 470pF
R3 = 100
C3 = 100uF/60V
R4 = 330
C4 = 100uF/60V
R5 = 3,3K
C5 = 10uF/60V
R6 = 1K
C6 = 47uF/60V		 R7 = 0,33
C7 = 8,2pF
R8 = 33k
C8 = 0,1uF
R9 = 4,7
C9 = 1uF/35V
R10 = 1k
C10 = 470pF
R11 = 3,3k
C11 = 100uF/60V
R12 = 100
C12 = 100uF/60V		 R13 = 330
C13 = 10uF/60V
R14 = 3,3k
C14 = 47uF/60V
R15 = 1k
C15 = 8,2pF
R16 = 0,33
C16 = 0,1uF
R17 = 33k
R18 = 4,7
IC1 = STK465
LS1 = Speaker 40W 8 or 4 Ohm

PCB Layout:

STK465: 30W Stereo Audio Amplifier pcb design

Component placement:

STK465: 30W Stereo Audio Amplifier top pcb

Download STK465 datasheet

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2 Responses to “STK465: 30W Stereo Audio Amplifier”

  1. raimundo writes:
    No. 1 — August 1st, 2011 at 9:28 pm

    Vlw pessoal do electropart.info, obrigado.
    Thanks you.

  2. Mariano writes:
    No. 2 — March 2nd, 2012 at 6:12 am

    Sorry I have a problem, how much voltage I have to use for this amplifier? And the amperage? Thanks!


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