| ??? 10/04/10 01:25 Read: times |
#178882 - NPN transistor...from port pin... Responding to: ???'s previous message |
An NPN transistor connected to a port pin via its BASE should have a series base resistor. This should be standard equipment for an LED or a RELAY. The size may vary but it should be there.
Michael Karas |
| Topic | Author | Date |
| 8051 driving 2n3904 | 01/01/70 00:00 | |
| NPN transistor...from port pin... | 01/01/70 00:00 | |
| The better way.. | 01/01/70 00:00 | |
| Best is to reply inline in another posting. | 01/01/70 00:00 | |
| sorry! | 01/01/70 00:00 | |
| An efficient relay driver... | 01/01/70 00:00 | |
| Zetex, RIP. | 01/01/70 00:00 | |
| 8051 driving relays | 01/01/70 00:00 | |
| Try a 'Search'. | 01/01/70 00:00 | |
Bidirectional port driver topology | 01/01/70 00:00 |