| ??? 02/14/05 10:10 Modified: 02/14/05 10:17 Read: times |
#87337 - Unwanted pulse!!!! |
My recent project was an opener for 32 doors. That saves user's entering data such as date and time of comming and gooing,total used time... It works safe. But there is a small problem. no it don't make any damage in set but ther is a question that i think it sometimes. when a door is opened or closed a pulse is generated in clk pins of all 74374 chips that i saw it on oscilloscope. port 2 is reserved for clk pins in source code. and it is used only 2 times in all of the program, one for closing and the other for opening. Why?Why unwanted pulse is occured. do switching relays makes this? i am simulating this project in some simulators and any unwanted pulse not found in scope. Can anyone solve this question? |
| Topic | Author | Date |
| Unwanted pulse!!!! | 01/01/70 00:00 | |
| noise ! | 01/01/70 00:00 | |
| more noise | 01/01/70 00:00 | |
| Pictures | 01/01/70 00:00 | |
| Pictures:again! | 01/01/70 00:00 | |
| Mehdi here's how | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| re picture, re problem | 01/01/70 00:00 | |
| re:re | 01/01/70 00:00 | |
| relevant - irrelavant | 01/01/70 00:00 | |
| re:re | 01/01/70 00:00 | |
| what source code | 01/01/70 00:00 | |
| Re: | 01/01/70 00:00 | |
| questions | 01/01/70 00:00 | |
| Re:questions | 01/01/70 00:00 | |
incomplete answers | 01/01/70 00:00 | |
| Any filters? | 01/01/70 00:00 | |
| Thanks! | 01/01/70 00:00 | |
| Ground plane | 01/01/70 00:00 | |
| re:pictures | 01/01/70 00:00 | |
| how to post pictures | 01/01/70 00:00 | |
| re:pictures/AGAIN | 01/01/70 00:00 | |
| Picture | 01/01/70 00:00 | |
| Not really | 01/01/70 00:00 | |
| Here ?? | 01/01/70 00:00 | |
| Added advantage | 01/01/70 00:00 | |
| re advantage | 01/01/70 00:00 | |
| Still waiting for pictures | 01/01/70 00:00 |