MIT
This is a self made schematic for the Chineese speaker protection board "12-24V Dual Relay 7812+UPC1237 Speaker Protection Board Module DIY Kit For HIFI" link
| ID | Name | Designator | Footprint | Quantity |
|---|---|---|---|---|
| 1 | DB107 | UR1 | DB107 | 1 |
| 2 | SIN(0 24 50) AC 1 0 | V1 | HDR1X2 | 1 |
| 3 | UPC1237HA | U1 | SIP8 | 1 |
| 4 | SRD-12VDC-SL-C | RELAY1,RELAY2 | RELAY-SL-SRD | 2 |
| 5 | 1N4007 | D1,D2 | DO-41 | 2 |
| 6 | 10k | R1,R2 | AXIAL-0.3 | 2 |
| 7 | 10u | C1 | CAP-D3.0XF1.5 | 1 |
| 8 | 47u | C2,C3 | CAP-D3.0XF1.5 | 2 |
| 9 | LM7812EE | U2 | TO220 | 1 |
| 10 | 204-10UYC/S530-A3 | LED1 | LED-3MM/2.54 | 1 |
| 11 | SPEAKER | SP1,SP2 | PCB_MOUNT_SPEAKER | 2 |
| 12 | 22k | R3 | AXIAL-0.3 | 1 |
| 13 | 2k | R4 | AXIAL-0.3 | 1 |
| 14 | 100u | C4,C5 | CAP-D3.0XF1.5 | 2 |
| 15 | 47k | R5,R6 | AXIAL-0.3 | 2 |
| 16 | Right | U3 | ONE_O | 1 |
| 17 | Left | U4 | ONE_O | 1 |
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