Audio Amplifier 100W or 130W

Output can use 2(out=90W) or 4(out=130W) audio power transistors.

PCB and layout

Use T3 on Heatsink

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

Power Supply

Audio Output and Heatsink

Component	Ref./Value	Type
T1	30+30 - 3,5A	Transformer
D1-D2-D3-D4	Rectifier 5A - 150V	Diode
C1-C2	4700uF	50V Electrolytic Capacitor
F1-F2	3A	Fuse
C3-C4	100nF	100V Polyester

4 transistors 130 W