Pin Details of IC LA1387
Substitute : LA7800
Functions :
- AFC detector
- Vertical oscillator
- Vertical driver
- Horizontal oscillator
- Sync separator
- Vertical blanking
Pin No. | Functions | Voltage |
1. | AFC output | 6.3 |
2. | AFC input to horizontal oscillator | 6.7 |
3. | Horizontal oscillator output(15625Hz.) | 0.5 |
4. | Shut down circuit | 0 |
5. | Ground (-Ve)supply voltage | 0 |
6. | Vertical driver output(50Hz.) | 0.5 |
7. | Feedback (output to input ) | 3.5 |
8. | Feedback (output to input ) | 0.2 |
9. | Vertical blanking output(50Hz.) | 0.2 |
10. | (50Hz)Vertical oscillator frequency adjust(V-Hold) | 6.2 |
11. | (50Hz)Vertical oscillator time constant circuit | 0.1 |
12. | Positive (+Ve)supply voltage | 12 |
13. | Sync separator | 1.2 |
14. | Sync separator Sync separator input | 10 |
15. | Supply voltage regulator | 12.7 |
16. | AFC input | 4.3 |