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STD Amplifier 200W
Amplifier 200W
License
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Update time：
2023-06-16 16:44:00
Creation time：
2022-12-25 11:50:11
Description
Description
The power transistors of the 200W Afi circuit do not require the classic 2SC5200 and 2SA1943 quiescent current adjustment. The amplifier can deliver 100W RMS power with a 4-OHM speaker and a 200W RMS 8-OHM speaker. Amplifier operating voltage max. 2X50V DC 6A (2X33VAC or 2X36VAC transformers can be used) supply filter capacitors For usable bridge diodes between 4700uf… 10.000uf, ready KBU10M or 4 P600J 6 ampere diodes can be used. 330PF capacitor protects the amplifier from high frequency oscillations. If you cannot find a 330PF, you can use a 270PF capacitor instead.
An overexcitation detector can be used. You can find it in my projects or in the attachment.
Design Drawing
Design Drawing
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 100nF | C1,C5,C6 | CAP-TH_L7.5-W2.5-P5.08-D1.0 | 3 |
| 2 | 47uF | C2 | CAP-TH_BD6.3-P2.50-D1.0-FD | 1 |
| 3 | 2.2uF | C3 | CAP-TH_BD8.0-P3.50-D0.5-FD | 1 |
| 4 | 330PF | C4 | CAP-TH_L6.5-W4.0-P5.00-D1.0 | 1 |
| 5 | 1N4004 | D1,D2,D3,D4,D5 | DO-41_BD2.4-L4.7-P8.70-D0.9-RD | 5 |
| 6 | +46V | J1 | HDR-M-2.54_1X1 | 1 |
| 7 | -46V | J2 | HDR-M-2.54_1X1 | 1 |
| 8 | Out + | J3 | HDR-M-2.54_1X1 | 1 |
| 9 | Out - | J4 | HDR-M-2.54_1X1 | 1 |
| 10 | 5uH | L1 | L0603 | 1 |
| 11 | In | P2 | CONN-TH_2P-P5.00 | 1 |
| 12 | 2SC5200 | Q1,Q2 | TO-3PL_L20.0-W5.0-P5.45-L | 2 |
| 13 | 2SA1943 | Q3,Q4 | TO-3PL_L20.0-W5.0-P5.45-L | 2 |
| 14 | A1015 | Q5,Q6,Q7 | TO-92-3_L4.8-W3.7-P2.54-L | 3 |
| 15 | TIP41C | Q8,Q9 | TO-220-3_L10.0-W4.5-P2.54-T | 2 |
| 16 | TIP42C | Q10,Q11 | TO-220-3_L10.0-W4.5-P2.54-L | 2 |
| 17 | 6.8Ω | R1,R2 | R_AXIAL-0.5 | 2 |
| 18 | 100Ω | R3,R5 | R_AXIAL-0.5 | 2 |
| 19 | 0.47Ω 5W | R4,R6,R7,R8 | R_AXIAL-0.5 | 4 |
| 20 | 10Ω | R9,R19 | R_AXIAL-0.5 | 2 |
| 21 | 18kΩ | R10,R12 | R_AXIAL-0.5 | 2 |
| 22 | 330Ω | R11 | R_AXIAL-0.5 | 1 |
| 23 | 10kΩ | R13 | R_AXIAL-0.5 | 1 |
| 24 | 270Ω | R14 | R_AXIAL-0.5 | 1 |
| 25 | 1kΩ | R15 | R_AXIAL-0.5 | 1 |
| 26 | 56Ω | R16 | R_AXIAL-0.5 | 1 |
| 27 | 820Ω | R17 | R_AXIAL-0.5 | 1 |
| 28 | 27Ω | R18 | R_AXIAL-0.5 | 1 |
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