Timeline for How to power a fan from capacitor after main power is down?
Current License: CC BY-SA 3.0
10 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 26, 2019 at 15:45 | comment | added | Kodak | There is a heater next to the fan so some air is needed to cool it in controlled fashion | |
| Mar 26, 2019 at 13:34 | comment | added | carloc | I am just curious about the reason for doing so .. | |
| Jan 25, 2017 at 19:25 | vote | accept | Kodak | ||
| Jan 25, 2017 at 19:25 | comment | added | Kodak | I see 1F from japan for ~1$... | |
| Jan 25, 2017 at 18:15 | comment | added | Andrew Morton | It might be cheaper and take less space to add another ATtiny85 compared to using a large capacitor. | |
| Jan 25, 2017 at 12:22 | comment | added | Kodak | yes, it is not for emergency but as I have run out of ATtiny85 pins I am not able to add "turn off" button (it is custom-made food dryer) | |
| Jan 25, 2017 at 11:54 | comment | added | Andrew Morton | If it isn't for accidental power loss then perhaps you could have a phased shutdown: shutdown the main circuitry and then five seconds later (or perhaps as determined by a temperature sensor) switch off the fan. | |
| Jan 24, 2017 at 23:47 | answer | added | user4574 | timeline score: 5 | |
| Jan 24, 2017 at 22:10 | comment | added | winny | P*t=deltaU^2*C/2 So you need a supercapacitor in the Farad range. | |
| Jan 24, 2017 at 21:29 | history | asked | Kodak | CC BY-SA 3.0 |