| ??? 01/20/10 18:12 Read: times |
#172617 - Low power indication |
Hi all
I am developing a very low power devices which run on lithium coin cells (using PIC).Now this device is supposed to work for 10,000 hours after which it should give some indication to change the batteries.Now problem is audio(buzzer)/visual(leds) will consume lot of current which the battery by that time may not be able to provide and so may fail .Can forum members suggest any ideas for the same. One idea i was googling for is maybe so chemical strip which changes colour when given a small electric pulse .About i am not able get the keyword to search.If anybody knows of such material(but commercial) they can guide me. Thank you for your time for reading the post Regards Gopalakrishnan.N |
| Topic | Author | Date |
| Low power indication | 01/01/70 00:00 | |
| By a blinking LED with very low duty cycle... | 01/01/70 00:00 | |
| Some more information | 01/01/70 00:00 | |
| A few days, or even more... | 01/01/70 00:00 | |
| Scheme... | 01/01/70 00:00 | |
| Thank you | 01/01/70 00:00 | |
| Choice of LED | 01/01/70 00:00 | |
| can be "Electrochromatic (electrochromic) display"? | 01/01/70 00:00 | |
| Comms interface? | 01/01/70 00:00 | |
| LCD? | 01/01/70 00:00 | |
| 10000 Hours... | 01/01/70 00:00 | |
| Rightly Put | 01/01/70 00:00 | |
| Why not? | 01/01/70 00:00 | |
| Not to knock it... | 01/01/70 00:00 | |
| Language barrier... | 01/01/70 00:00 | |
| possibly ???? | 01/01/70 00:00 | |
| flipdot | 01/01/70 00:00 | |
| spare part | 01/01/70 00:00 | |
| After all this discussion... | 01/01/70 00:00 | |
| Yes, LCD is highly recommended | 01/01/70 00:00 | |
| often more than a dot is available | 01/01/70 00:00 | |
| but O/P didn't mention any LCD ;-( | 01/01/70 00:00 | |
| No ... but someone else did | 01/01/70 00:00 | |
| "Bistable" LCDs - "Cholesteric" | 01/01/70 00:00 | |
What you want is... | 01/01/70 00:00 |