60W MosFet Audio Amplifier
High Quality, powerful unit: 90W into 4 Ohm load
Also suited as guitar or bass amplifier
Circuit diagram:
Parts:
R1______________47K 1/4W Resistor
R2_______________4K7 1/4W Resistor
R3______________22K 1/4W Resistor
R4_______________1K 1/4W Resistor
R5,R12,R13_____330R 1/4W Resistors
R6_______________1K5 1/4W Resistor
R7______________15K 1/4W Resistor
R8______________33K 1/4W Resistor
R9_____________150K 1/4W Resistor
R10____________500R 1/2W Trimmer Cermet
R11_____________39R 1/4W Resistor
R14,R15___________R33 2.5W Resistors
R16_____________10R 2.5W Resistor
R17_______________R22 5W Resistor (wirewound)
C1_____________470nF 63V Polyester Capacitor
C2_____________470pF 63V Polystyrene or ceramic Capacitor
C3______________47µF 63V Electrolytic Capacitor
C4,C8,C9,C11___100nF 63V Polyester Capacitors
C5______________10pF 63V Polystyrene or ceramic Capacitor
C6_______________1µF 63V Polyester Capacitor
C7,C10_________100µF 63V Electrolytic Capacitors
D1___________1N4002 100V 1A Diode
D2_____________5mm. Red LED
Q1,Q2,Q4_____MPSA43 200V 500mA NPN Transistors
Q3,Q5________BC546 65V 100mA NPN Transistors
Q6___________MJE340 200V 500mA NPN Transistor
Q7___________MJE350 200V 500mA PNP Transistor
Q8___________IRFP240 200V 20A N-Channel Hexfet Transistor
Parts:
R1_______________3K9 1W Resistor C1,C2_________4700µF 63V Electrolytic Capacitors (See Notes) C3,C4__________100nF 63V Polyester Capacitors 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 PL1____________Male Mains plug SW1____________SPST Mains switch
Q9___________IRFP9240 200V 12A P-Channel Hexfet Transistor
Power supply circuit diagram:
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