Output can use 2(out=90W) or 4(out=130W) audio power transistors.
PCB and layout
4 transistors 130 W
Component
|
Ref./Value
|
Type
|
R1
|
120K
|
1/4W Resistor
|
R2
|
3K3
|
1/2W Resistor
|
R3
|
5K6
|
1/4W Resistor
|
R4
|
3K3
|
1/4W Resistor
|
R5
|
680R
|
1/4W Resistor
|
R6
|
120R
|
1/4W Resistor
|
R7
|
3K3
|
1/4W Resistor
|
R8
|
1K2
|
1/4W Resistor
|
R9
|
2K7
|
1/4W Resistor
|
R10
|
1K5
|
1/4W Resistor
|
R11
|
680R
|
1/4W Resistor
|
R12
|
120R
|
1/4W Resistor
|
R13
|
120R
|
1/4W Resistor
|
R14
|
0,33R
|
5W Resistor
|
R15
|
0,33r
|
5W Resistor
|
R16
|
10R
|
1W Resistor
|
R17
|
10R
|
1W Resistor
|
C1
|
10uF
|
16V Electrolytic Capacitor
|
C2
|
330µF
|
16V Electrolytic Capacitor
|
C3
|
470uF
|
35V Electrolytic Capacitor
|
C4
|
150pF
|
Ceramic Capacitor
|
C5
|
100nF
|
100V Polyester Capacitor
|
RV1
|
1K
|
Trimpot
|
D1
|
9V1 - 500mW
|
Zener
|
T1
|
BC557
|
PNP transistor
|
T2
|
BC557
|
PNP transistor
|
T3
|
BC548
|
NPN transistor
|
T4
|
BD137
|
NPN transistor
|
T5
|
BD137
|
NPN transistor
|
T6
|
BD138
|
PNP transistor
|
T7
|
2N3773
|
NPN transistor
|
T8
|
2N3773
|
NPN transistor
|
L1
|
coil
|
largest number of turns rolled in R16 with AWG22
|
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