| ??? 11/21/05 19:53 Read: times |
#103962 - More Details! Responding to: ???'s previous message |
Thanks you all for your responses
Erik, as tony said if the AC supply is present there will still be a voltage of the same order! And tony can you explain your scheme(KISS) more! Kai, The board is a SKIN Temperature Controller ! I use 7414 because it is cheapest for production my circuit current is about 200 mA in the worst case(When All segments and Leds are ON)! When AC Supply is existed and Battery removed,Controller must Blinks a Led and Buzzer for alarming the Technician Thanks Andy for your link but i want to correct my design without any extra chips! Reza |
| Topic | Author | Date |
| Battery Backup Trouble! | 01/01/70 00:00 | |
| a suggestion | 01/01/70 00:00 | |
| Suggestion may not work | 01/01/70 00:00 | |
| Simple, or simplistic? | 01/01/70 00:00 | |
| and it will state "no battery" when one | 01/01/70 00:00 | |
| Sorry | 01/01/70 00:00 | |
| Some more details please | 01/01/70 00:00 | |
| Use a proper Supervisor | 01/01/70 00:00 | |
| More Details! | 01/01/70 00:00 | |
| Put a CMOS transistor in series with | 01/01/70 00:00 | |
| Thanks | 01/01/70 00:00 | |
| What battery do you use? | 01/01/70 00:00 | |
| 8*1.5(NI-CD)! | 01/01/70 00:00 | |
| NI-CD is 1.2*N | 01/01/70 00:00 | |
| But when is full it is more than 1.2v | 01/01/70 00:00 | |
| Kai,when you say your idea? | 01/01/70 00:00 | |
| Now... | 01/01/70 00:00 | |
| Thanks Dear Kai, | 01/01/70 00:00 | |
| How it works... | 01/01/70 00:00 | |
| Your Time is for all of us,Kai | 01/01/70 00:00 | |
I would prefer the Pb-battery | 01/01/70 00:00 | |
| A/D? | 01/01/70 00:00 |