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STD Microphone amplifier with AGC
Microphone amplifier with AGC
License
GPL 3.0
License: GPL 3.0Mode:
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Update time：
2024-09-08 20:03:49
Creation time：
2023-02-17 10:09:37
Description
Description
Microphone amplifier with AGC
Design Drawing
Design Drawing
schematic diagram
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| ID | Name | Designator | Footprint | Quantity | |
|---|---|---|---|---|---|
| 1 | 100 | R9 | 0805 | 1 | |
| 2 | 100uH | L1 | L1206 | 1 | |
| 3 | Out | P2 | HDR-2X1/2.54 | 1 | C36717 |
| 4 | 22u | C1 | 0805 | 1 | |
| 5 | 1n | C2 | 0805 | 1 | |
| 6 | 0.1 | C3,C5 | 0805 | 2 | |
| 7 | 1u | C6 | 0805 | 1 | |
| 8 | 10u | C7,C4,C9 | 0805 | 3 | |
| 9 | 47u | C8 | 0805 | 1 | |
| 10 | LL4148 | D1,D2 | LL-34 | 2 | C84062 |
| 11 | Mic | P1 | HDR-2X1/2.54 | 1 | C36717 |
| 12 | +12v | P3 | HDR-2X1/2.54 | 1 | C36717 |
| 13 | BSS138 | Q1 | SOT-23-3 | 1 | C78284 |
| 14 | BC847 | Q2 | SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR | 1 | C8574 |
| 15 | 4k7 | R1 | 0805 | 1 | |
| 16 | 10k | R2 | 0805 | 1 | |
| 17 | 10k | R3 | TRIMMER_3306F | 1 | |
| 18 | 33k | R4,R6 | 0805 | 2 | |
| 19 | 560 | R5,R7 | 0805 | 2 | |
| 20 | 680 | R8 | 0805 | 1 | |
| 21 | 1M | R10 | 0805 | 1 | |
| 22 | BF998 | VT1,VT2 | SOT143B | 2 | C108141 |
| 23 | 3k3 | R11 | 0805 | 1 |
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