The following diagram is the schematic diagram of 60W Power Amplifier powered by MOSFET. The MOSFET amplifier should be better than ordinary transistored amplifier circuit.
Power Amplifier Schematic:
Component Parts List:
R1 = 47K
R2 = 4K7
R3 = 22K
R4 = 1K
R5, R12, R13 = 330R
R6 = 1K5
R7 = 15K
R8 = 33K
R9 = 150K
R10 = 500R 1/2W Trimmer Cermet
R11 = 39R
R14,R15 = R33 2.5W Resistors
R16 = 10R 2.5W Resistor
R17 = R22 5W Resistor (wirewound)
C1 = 470nF
C2 = 470pF
C3 = 47µF/63V
C4,C8,C9,C11 = 100nF
C5 = 10pF
C6 = 1µF 63V Polyester Capacitor
C7,C10 = 100µF/63V
D1 = 1N4002
D2 = 5mm. Red LED
Q1, Q2, Q4 = MPSA43
Q3, Q5 = BC546
Q6 = MJE340
Q7 = MJE350
Q8 = IRFP240
Q9 = IRFP9240
Power Supply Schematic:
Use below power supply circuit to handle above 60W MOSFET amplifier circuit.
Component Parts List:
R1 = 3K9 / 1W Resistor
C1, C2 = 4700µF/63V Electrolytic Capacitors (See Notes)
C3, C4 = 100nF
D1 = 400V 8A Diode bridge
D2 = 5mm. Red LED
F1,F2 = 4A Fuses with sockets
T1 = 230V or 115V Primary, 30+30V Secondary 160VA Mains transformer
Source: redcircuit, visit the page for complete explanation
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