| ??? 09/19/05 17:41 Read: times Msg Score: +1 +1 Good Answer/Helpful |
#101235 - You missed the important point! Responding to: ???'s previous message |
Erik said you can do this, but continued:
Erik said:
I have seen such schemes, half of which failed when some environmemtal condition (temperature, dust, dirt etc) changed. The trouble is that this is only an indirect indication of when the valve is shut. If the valve gets stiff, the motor current will increase and your circuit will think that the valve is shut when it isn't! Hence if you need to know tht the valve is really shut, you need to use somehting that will detect that directly - such as a microswitch. |
| Topic | Author | Date |
| Sensing Stop Point of a DC Motor! | 01/01/70 00:00 | |
| I doubt that, the time it takes a motor | 01/01/70 00:00 | |
| More! | 01/01/70 00:00 | |
| You can sense the stops by measuring the | 01/01/70 00:00 | |
| I to V? But | 01/01/70 00:00 | |
| SHUNT | 01/01/70 00:00 | |
| You missed the important point! | 01/01/70 00:00 | |
| Listen to Erik & Andy | 01/01/70 00:00 | |
| Another Approach! | 01/01/70 00:00 | |
| Not reliable | 01/01/70 00:00 | |
| you don't get it, do you | 01/01/70 00:00 | |
| Stop sensing for DC motor | 01/01/70 00:00 | |
| Please Say Sensing stop ....Please | 01/01/70 00:00 | |
| Sensing Stop -:) | 01/01/70 00:00 | |
| no........ | 01/01/70 00:00 | |
| That is not the big risk | 01/01/70 00:00 | |
| I've seen it all before! | 01/01/70 00:00 | |
| Thanks Russel And Erik | 01/01/70 00:00 | |
| CYA | 01/01/70 00:00 | |
| Why did the original driver fail? | 01/01/70 00:00 | |
It Works proper but.. | 01/01/70 00:00 |