Timeline for Reducing the voltage drop on a simple comparator driving a MOSFET to avoid LiIon overdischarge
Current License: CC BY-SA 3.0
4 events
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| Mar 25, 2015 at 16:21 | history | edited | Maxthon Chan | CC BY-SA 3.0 |
added 315 characters in body
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| Mar 20, 2015 at 9:46 | comment | added | Maxthon Chan |
@OlafM If that is the case you can use a comparator like LM339, comparing the battery voltage divided down by a ratio against some voltage reference like TL431. LM339 outputs an open collector signal and you can use that with a pull up resistor to drive a PMOS high side switch.
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| Mar 20, 2015 at 9:40 | comment | added | FarO | Yes you are right, I didn't mean to prevent the drainage completely, but lighting up the LED and, if necessary, preventing the light to work would be enough to remember me to charge the batteries. I update the question. | |
| Mar 20, 2015 at 0:26 | history | answered | Maxthon Chan | CC BY-SA 3.0 |