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STD 400W RMS Stereo Power Amplifier
License: Public Domain
Mode: Editors' pick
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Update time：
2019-08-29 18:01:16
Creation time：
2019-08-29 14:31:50
Description
This is the schematic diagram of 400W RMS stereo power amplifier which use power transistor to work. This amplifier in addition to providing good sound power, also with excellent quality and a high fidelity with low noise, to obtain the 400 watts we can put 2 speakers of 4 Ohms or 4 of 8 Ohms. The circuit require symmetrical power supply.
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | left/right | I/P | WJ2EDGVC-5.08-3P | 1 |
| 2 | left/right | SPEAKERS | WJ2EDGVC-5.08-4P | 1 |
| 3 | 18k | R1,R2,R30,R31 | AXIAL-0.3 | 4 |
| 4 | A1015 | Q1,Q2,Q3,Q4,Q5,Q6 | TO-92(TO-92-3) | 6 |
| 5 | 1N4007RLG | D1,D2,D3,D4,D5,D6,D7,D8,D9,D10 | DO-41 | 10 |
| 6 | 270 ohms | R3,R5 | AXIAL-0.3 | 2 |
| 7 | 10k | R4,R6,R13 | AXIAL-0.3 | 3 |
| 8 | TIP42 | Q7,Q8,Q9,Q10 | TO-220 | 4 |
| 9 | 330pF | C1,C2 | CAP-D3.0XF1.5 | 2 |
| 10 | 820 ohm | R7,R8 | AXIAL-0.3 | 2 |
| 11 | 27 ohm | R9,R10 | AXIAL-0.3 | 2 |
| 12 | 104 | C3,C4,C5,C6 | CAP-D3.0XF1.5 | 4 |
| 13 | 56 ohm | R11,R12 | AXIAL-0.3 | 2 |
| 14 | TIP41 | Q11,Q12,Q13,Q14 | TO-220 | 4 |
| 15 | 6.8 ohm | R14,R15,R16,R17 | AXIAL-0.3 | 4 |
| 16 | 100 ohm | R18,R19,R20,R21 | AXIAL-0.3 | 4 |
| 17 | 0.47k | R22,R23,R24,R25,R26,R27,R28 | AXIAL-0.3 | 7 |
| 18 | 0.47 | R29 | AXIAL-0.3 | 1 |
| 19 | 10 ohm | R32,R33,R34,R35 | AXIAL-0.3 | 4 |
| 20 | power i/p | POWER | WJ2EDGVC-5.08-4P | 1 |
| 21 | 2SD1047 | Q23,Q24,Q25,Q26,Q27,Q28,Q29,Q30 | TO-92_3PIN-L4.95-W3.94-PITCH2.54-L | 8 |
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