| ??? 07/24/05 23:16 Read: times |
#97929 - PNP Responding to: ???'s previous message |
I think the preference to PNP so the LED is initially off when the microprocessor powers up. I am only driving one LED and my 89C2051 will sink 20 ma. I have not had any problems but was wondering why using a transistor was suggested in the past, I now see it would be required if driving multiple LEDs.
Thanks for the replies. James Krushlucki |
| Topic | Author | Date |
| Driving LED | 01/01/70 00:00 | |
| Re: Led Driving | 01/01/70 00:00 | |
Another aspect | 01/01/70 00:00 | |
| Sawing with a file.. | 01/01/70 00:00 | |
| How many LEDS | 01/01/70 00:00 | |
| Driving LEDs | 01/01/70 00:00 | |
| PNP | 01/01/70 00:00 | |
| Good design practice | 01/01/70 00:00 | |
| generalizations | 01/01/70 00:00 | |
| Ground bounce is an issue | 01/01/70 00:00 |