Protection-board
Markus-Fitz
Speaker-protection board for power amplifier.
Components (29)
| Reference | Value | Description |
|---|---|---|
| Q1,Q6,Q9-Q13,Q16,Q19 | 2N3904 | |
| Q2,Q15,Q17,Q18,Q20 | 2N3906 | |
| Q3 | TIP41 | |
| Q4 | TIP42 | |
| Q14 | BD140 | |
| C7-C9 | 10u 25V | |
| C12 | 100u 6.3V np | |
| D1,D7 | Zener_5V | |
| D2,D3 | Zener_13V | |
| D4 | D | |
| D5,D6 | 1N4148 | |
| H1,H2 | MountingHole | |
| J1 | V+_unreg | |
| J2 | GND_in | |
| J3 | spkr_out_l | |
| J4 | amp_in_l | |
| J5 | amp_in_r | |
| J6 | spkr_out_r | |
| J7 | NTC_10k | |
| J8,J10,J13 | +12V_reg | |
| J9 | V-_unreg | |
| J11,J12,J14 | -12V_reg | |
| K2 | FINDER-40.52 | |
| R1,R17,R23,R24 | 100k | |
| R3,R6 | 4k7 | |
| R4,R5,R8 | 27k | |
| R14,R16,R18-R21,R25,R28,R29,RV2 | 10k | |
| R15 | 2k2 | |
| R22,R26,R27,R30 | 1k |