| ??? 09/28/10 08:50 Read: times |
#178767 - Re: Most 8051's Responding to: ???'s previous message |
Hi Michael,
Thanks for your reply! The ports being on or '1' at startup is not a problem since the load is only LEDs. I've always used transistors for switching and decided that it's time to learn how to use FETs. Hence my understanding of how they worked was the first thing I doubted. It seems like the problem may be ESD after all, since both the soldering stations I used no longer has the earth connected to the tip. The one station has a broken earth wire between the station and the handpiece and the other has earth missing between the mains plug and the station. Will fix it and try again! :-) Henk |
| Topic | Author | Date |
| 89S52 and BS170? | 01/01/70 00:00 | |
| As written.... | 01/01/70 00:00 | |
| Exactly! | 01/01/70 00:00 | |
| almost true | 01/01/70 00:00 | |
| Series resistor to the gate | 01/01/70 00:00 | |
| Most 8051's | 01/01/70 00:00 | |
| Re: Most 8051's | 01/01/70 00:00 | |
| Several reasons... | 01/01/70 00:00 | |
| pop explained in earlier posts | 01/01/70 00:00 | |
| RE: pop explained in earlier posts | 01/01/70 00:00 | |
| RE: Several Reasons | 01/01/70 00:00 | |
| Update: May be ESD after all | 01/01/70 00:00 | |
| There is a trick... | 01/01/70 00:00 | |
RE: There is a trick... | 01/01/70 00:00 |