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100W HiFi Audio Amplifier Circuit
技术规格
Output power: 100W (RL = 4Ω, K = 0.1%) or 70W (RL = 8Ω, K = 0.1%) (continuous sinusoidal signal)
Power in relation to frequency: <10Hz-100KHz at 100W
Distortion: 0.1% at 20Hz-20KHz at 100W
Intrinsulation: 0.28% measured at 40Hz and 10KHz at a 4: 1 ratio and Pa = 100W
Signal/Noise (SIN): 70 dB
Input sensitivity: 0.775V
Input resistance: 100KΩ
Output resistance: 0.052 Ω (in 1KHz)
Minimum load: 4Ω
Power supply: 80V symmetrical (+ 40V, 0, -40V)
Current consumption: 2.5A max at RL = 4Ω
Peak current: 50mA
100W HiFi Audio Amplifier PCB
放大器元件列表
Resistors:
R1 = 120k | R2,R5,R6 = 3k3 | R3 = 120Ω | R4,R8 = 680Ω | R7 = 1k5 | R9 = 5k6 | Α10 = 1k2 | R11 = 2k7 | R12,R13 = 270Ω | R14,R15 = 15Ω | R16,R17 = 220Ω | R18,R19 = 1Ω/9W | R20 = 10Ω | R21,R22 = 1Ω | Ρ1 = 1k
Capacitors:
C1 = 470 pF | C2 = 10μF/63V | C3 = 150pF | C4 = 1000μ/4V | C5 = 220μ/40V | C6 = 47pF | C7,C8 = 560pF | C9 = 47nF | C10,C11 = 680nF | C12,C13 = 100nF
Semiconductors:
Τ1,Τ2 = BC556Α | Τ3,Τ5 = BC547B | Τ4 = BC639 | Τ6 = BC557B | Τ7 = BDX67B,BDX67C | Τ8 = BDX66B,BDX66C | D1 = 9V1/1.3W | D2,D3 = 1Ν4148,1Ν914,BAW62
Other:
2 heatsinks 1.2 ° C / W or 1.8 ° C / W (see text) | Insulators for power transistors (mica)
电源组件列表
电阻:
R1, R2 = 3k3 / 1W
电容器:
C1 = 100nF |C2,C3 = 4700μF / 63V
半导体:
D1、D2 = LED |B1 = B80C 3200/5000 整流器(桥)
熔断 器保险丝:
F1 = 1.4A (约) |F2、F3 = 2.5A(约)
其他:
环形变压器 • 次级 2 x 30V - 2x 3,75A |S1 = 双极开关 |两个用于 PCB 的保险丝 |220V 的保险丝盒
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