| ??? 04/05/03 17:42 Read: times |
#42945 - RE: RS232 CIRCUIT Responding to: ???'s previous message |
use the transistor as the on-off switch , but you require +/-12v supply
+12V_ | | |R1 | | R2 |______output input fr 8051_-----___|/ to computer ----- | | - -12V +5V_ | | |R1 | | R2 |______output input fr com _-----___|/ to 8051 ----- | | - 0V |
| Topic | Author | Date |
| RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| Raed the links given | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 | |
| RE: RS232 CIRCUIT | 01/01/70 00:00 |