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STD Microphone Preamp V1
License: GPL 3.0
Mode: Editors' pick
- 2
Update time：
2021-05-13 09:42:19
Creation time：
2020-11-30 16:02:26
Description
Microphone amplifier for low noise voice recording. The circuit is based on a LM833 low noise audio amplifier.
Design Drawing
schematic diagram
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PCB
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| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | 47u | C7,C2 | CAP-D4.0×F1.5 | 2 |
| 2 | HDR-F-2.54_1x2 | J1,J2 | HDR-F-2.54_1X2 | 2 |
| 3 | HDR-F-2.54_1x2 | J3 | BATTERY_HOLDER | 1 |
| 4 | 10k | R9 | RES-ADJ_3296W | 1 |
| 5 | 470n | C1,C5,C8 | RAD-0.2 | 3 |
| 6 | 100n | C3 | RAD-0.2 | 1 |
| 7 | 1u | C6 | RAD-0.2 | 1 |
| 8 | SOLDERJUMPER_2WAYS | SJ1 | SJ_3 | 1 |
| 9 | 47k | R1,R2,R6,R7 | R_AXIAL-0.4 | 4 |
| 10 | 10k | R3,R8 | R_AXIAL-0.4 | 2 |
| 11 | 330 | R4 | R_AXIAL-0.4 | 1 |
| 12 | 1k8 | R5 | R_AXIAL-0.4 | 1 |
| 13 | 6k8 | R10 | R_AXIAL-0.4 | 1 |
| 14 | 220p | C4 | RAD-0.1 | 1 |
| 15 | 1N4007W | D1 | SMA-L_L4.4-W2.6-LS5.0-RD | 1 |
| 16 | LM833N | U1 | DIP8 | 1 |
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