| ??? 12/13/10 02:09 Read: times |
#180112 - Now for plots.. Responding to: ???'s previous message |
Hello Kai,
Just see this plots taken from the DAS running at 10mS rate and it tells the whole story even without scoping (400ms ON time capture ) : 
So I guess I need to tackle the power supply. Also I was looking at your calculation again - I actually do not need to support 10A for 100ms as each solenoid will only add another 1.25A. Thus the capacitor size will now become 125,000uF. Agreed still not a very cute one but 3 nos of 50,000uf should do it - atleast to try out the concept. Frankly I have never tried such monster capacitors and will need to Google. Thanks Raghu |
| Topic | Author | Date |
| Solid State Relay characterisitics | 01/01/70 00:00 | |
| Perhaps... | 01/01/70 00:00 | |
| Inadequate power supply | 01/01/70 00:00 | |
| Duty cycle fixed | 01/01/70 00:00 | |
| Peak vs Average power | 01/01/70 00:00 | |
| Peak current | 01/01/70 00:00 | |
| Do DC solenoids have inrush current problem? | 01/01/70 00:00 | |
| Yes, because they consume power... | 01/01/70 00:00 | |
| like relays | 01/01/70 00:00 | |
| Inrush current | 01/01/70 00:00 | |
| Try to add storage caps... | 01/01/70 00:00 | |
| Now for plots.. | 01/01/70 00:00 | |
| DAS? | 01/01/70 00:00 | |
Machine not available ... | 01/01/70 00:00 | |
| So try other switchers instead SSR | 01/01/70 00:00 | |
| What about two more SSR's? | 01/01/70 00:00 |