| ??? 08/15/05 18:01 Modified: 08/15/05 18:03 Read: times |
#99466 - what difference ? Responding to: ???'s previous message |
isnt there risk of diffrence ground potentials of micro and laptop being too high
When the unplugged laptops "ground" is connected to the uC ground, where is the potential difference?. The laptop has no potential (it floats) till it is conncted via the 232 cable and then it will have the same as the uC. Erik |
| Topic | Author | Date |
| RS232 Isolation for Flash Magic. | 01/01/70 00:00 | |
| apples and oranges | 01/01/70 00:00 | |
| Re: Apples & Oranges. | 01/01/70 00:00 | |
| This is the first time I have seen Asim | 01/01/70 00:00 | |
| Re: Link | 01/01/70 00:00 | |
| H11l1 | 01/01/70 00:00 | |
| The problem with the 2 links you show is | 01/01/70 00:00 | |
| USB to power the max232 | 01/01/70 00:00 | |
| Re: The problem with the 2 links. | 01/01/70 00:00 | |
| if you have 2 usb ports, why not supply | 01/01/70 00:00 | |
| Re: 2 Ports. | 01/01/70 00:00 | |
| what difference ? | 01/01/70 00:00 | |
| Earth??? | 01/01/70 00:00 | |
| my One Compaqw Presario 2207AL | 01/01/70 00:00 | |
| Look More | 01/01/70 00:00 | |
| re:optoisolated RS-232 | 01/01/70 00:00 | |
| Then But One | 01/01/70 00:00 | |
| Got it working. | 01/01/70 00:00 | |
| Great!!! | 01/01/70 00:00 | |
Circuit Schematic. | 01/01/70 00:00 |