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STD Amplificador de Áudio

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Mode: Editors' pick

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Update time: 2021-03-05 21:40:47
Creation time: 2021-02-24 19:01:06
Description

Amplificador que atenda as seguintes especificações:

  • Potência de saída nominal: 10W @ 8Ω;
  • Tensão nominal de alimentação: +/- 15V;
  • Tensão de offset máxima de saída: 10mV;
  • Capacidade de amplificar sinais de 20 Hz a 20 kHz sem distorção de fase; 
  • Apresentar regulação de linha e de carga inferiores a 1%; 
  • Apresentar Taxa de distorção harmônica total (THD) inferior a 0,01% para sinais inferiores a 10kHz; 
  • Possuir proteção contra sobrecarga; P
  • Possuir ajuste de volume; 
  • Realizar projeto térmico.
Design Drawing
schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 BC547B Q4,Q5,Q2,Q9,Q10 TO92-INLINE 5
2 LARGE_220UF_25V C110,C120 LARGE_220UF_25V 2
3 470 R15,R16 AXIAL-0.4 2
4 10 R2,R3,R13,R14 AXIAL-0.4 4
5 500 R4 AXIAL-0.4 1
6 10k R5 AXIAL-0.4 1
7 90 R6 AXIAL-0.4 1
8 1,5K R7 AXIAL-0.4 1
9 56 R8 AXIAL-0.4 1
10 2,2K R9 AXIAL-0.4 1
11 2K R10 AXIAL-0.4 1
12 1K R11,R12,R18,R23 AXIAL-0.4 4
13 100 R19,R20,R21,R22 AXIAL-0.4 4
14 4,7K R17 AXIAL-0.4 1
15 1N4148W D1 DIODE_DO41 1
16 4,7K R1 3590S-2-103L 1
17 BC547C Q12,Q14 TO92-INLINE 2
18 68pF C1 RAD-0.1 1
19 PWR4412-2S(5W) R24,R25 PWR4412-2S(5W) 2
20 BD140G Q15 ONSC-TO-225-3-77-09 1
21 100nF C50,C80 CAPACITOR 100NF #3 2
22 1,5n C9 RAD-0.1 1
23 Mini_jack_F AUDIO1 PJ-320B 1
24 TRIMMER U5,U1 TRIMMER 2
25 TIP32CG Q19 TO-220 1
26 BC557BG Q1,Q3,Q6,Q7,Q8,Q13,Q17 TO92-INLINE 7
27 BD135 Q11,Q18 ONSC-TO-225-3-77-09 2
28 TIP31CG Q16 TO-220 1
29 CON_TERMINAL_BLOCK_03 ENTRADA2,SAIDA1 TERMINAL_BLOCK_3P_5 2
30 47uF C6,C7 CAP-D5.0XF2.0 2
31 820uF C10 CAP-D5.0XF2.0 1
32 47uF C2 CAP-TH_BD6.3-P2.50-D1.0-FD 1

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