| ??? 05/02/06 14:27 Read: times |
#115363 - Static Responding to: ???'s previous message |
Firstly, create a new thread! This topic has nothing to do with measuring AC voltage!
As for your static problem - is the treadmill rubber mat conductive? It should have carbon black particles in it. Also you should have a wiper to earth running on the conductive rubber mat - therefore no static charge can accumulate from the treadmill action. Sometimes static charge might come from the user's running shoes, this is harder to fix as you have no control over this. Have earthed metal panel for pushbuttons and implement static protection on switch inputs using resistors and capacitors. Try 10k and 100pF to begin with. Most static discharges are very quick <10uS so ensure your software does proper debounce of switch input. |
| Topic | Author | Date |
| measuring AC voltage | 01/01/70 00:00 | |
| It's all about the power | 01/01/70 00:00 | |
| Divider in the MOhm range, cap, RMS | 01/01/70 00:00 | |
| NOT isolated | 01/01/70 00:00 | |
| well.. | 01/01/70 00:00 | |
| may be | 01/01/70 00:00 | |
| Fuse ??? | 01/01/70 00:00 | |
| But... | 01/01/70 00:00 | |
| smoke escape | 01/01/70 00:00 | |
| and i guess | 01/01/70 00:00 | |
| Even more strange! | 01/01/70 00:00 | |
| Aah! | 01/01/70 00:00 | |
| may be not | 01/01/70 00:00 | |
| upload ??? | 01/01/70 00:00 | |
| here | 01/01/70 00:00 | |
| re:upload | 01/01/70 00:00 | |
| ok..here is the ckt | 01/01/70 00:00 | |
| values for the input resistors please | 01/01/70 00:00 | |
| oh sure..but hope nothing else burns... | 01/01/70 00:00 | |
| ESD problem | 01/01/70 00:00 | |
| It would be proper to start a new thread | 01/01/70 00:00 | |
indeed it would | 01/01/70 00:00 | |
| Static | 01/01/70 00:00 | |
| Unsuited and dangerous! | 01/01/70 00:00 |