High Power Amplifier 300W

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Part List

R1-19= 1Kohm 5W R34-35= 0.1ohm 5W C14-17= 100uF 100V
R2-3= 4.7Kohm R36-43= 39ohm C15= 100nF 250V polyester
R4-5= 22ohm R37-42= 5.6Kohm 1W Q1-2-3= BC547
R6-14= 10Kohm R38-41= 220ohm 5W Q4-5-6= BC557
R7-8= 1Kohm R39-40= 0.1ohm 5W Q7-11-12= BD140 or BC640
R9-23*=10K ohm R44-45= 0.1ohm 5W Q8= BC549
R10= 10ohm *see circuit sch. R46= 4.7ohm 2W Q9-10-15= BD139 or BC639
R11-13= 2.2Kohm R47= 100ohm Q13-14= MJ15004
R12= 22Kohm C1= 2.2uF 25V Q16-17= MJ15003
R15-16= 22ohm C2-6= 330pF ceramic TR1= 2K2 Trimmer
R17-18= 4.7Kohm C3-8= 100uF 100V F1-2= 5A Fuse Fast
R20-25= 390ohm C4-9= 100nF 250V D1-3= 5.1V 0.5W Zener
R21= 6.8Kohm C5= 100nF 100V polyester D2= 62V/5W Zener or 47v and 15V in series
R22= 4.7Kohm C7= 100uF 25V D4-5= 1N4004
R24-26-33= 220ohm C10= 1.5nF 100V polyester L1=10 turns diameter 1mm in 15mm diameter tube
R27-32= 100ohm 1W C11-12= 1.5nF 100V polyester
R28,29,30,31= 100ohm C13-16= 100nF 250V polyester *Use R23=6k8 for 4 ohm loudspeakers
SPECIFICATIONS

POWER OUTPUT 200W rms/8 ohm
310W rms/4 ohm
800W rms/8 ohm (Bridge mode)
FREQUENCE RESPONSE 20HZ-20KHZ +/-0.5dB
INPUT SENSITIVITY 1V for 200W/300W
HUM AND NOISE -105dB
THD <0.1%
DAMPING FACTOR 65
OUT VOLTAGE FROM POWER SUPPLY

[+V1]= +68V DC [+V2]= +15V DC [+V3]= +68V DC
[-V1]= -68V DC [-V2]= -15V DC [-V3]= -68V DC


Power Supply for two Power channel , with Prodection and Bridge circuit (soft start ).

T1= 230V AC/ 2X47V 350VA ................

2X15V 30 VA*
C1-4= 4700 uF 100V C15= 33nF 630Vac
C5-8= 4700 uF 25V CX= 33nF 630Vac
T2=230V AC/ 2X47V 350VA C6-9= 100nF 100V F1= Fuse 2A Slow
BR1-3=4x1N5404 or 35A Bridge C7-10= 47uF 25V IC1= 7815T
RX= 47R 15W C11...14= 4700uF 100V IC2= 7915T

valeu amigao