Timeline for Is reverse polarity protection this simple?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 12, 2022 at 6:00 | comment | added | DKNguyen | @OskarSkog Specifically, you want to use at least the Vgs they have listed as achieving the rated RDson. | |
| Jun 12, 2022 at 5:56 | answer | added | alexoiunt1 | timeline score: 1 | |
| Jun 12, 2022 at 0:12 | comment | added | Oskar Skog | @mkeith: Yes, 12 V is good enough. I was just pointing it out because many beginners assume the threshold voltage is sufficient for switching applications, which could be a problem under different circumstances. | |
| Jun 11, 2022 at 17:19 | comment | added | user57037 | @OskarSkog so 12 V should be enough to turn it on, right? Since 12 is greater than 10 but less than the maximum allowable Vgs? | |
| Jun 11, 2022 at 12:57 | comment | added | Oskar Skog | V_{GS(th)} is not sufficient for switching a MOSFET, that's the voltage at which it will start barely conducting. The datasheet should specify an "on" voltage. For your MOSFET, it is -10 V. | |
| Jun 10, 2022 at 18:00 | history | tweeted | twitter.com/StackElectronix/status/1535320955504971782 | ||
| Jun 10, 2022 at 17:32 | answer | added | C. Dunn | timeline score: 3 | |
| Jun 10, 2022 at 16:53 | answer | added | Tim Williams | timeline score: 3 | |
| Jun 10, 2022 at 15:36 | answer | added | Spehro 'speff' Pefhany | timeline score: 2 | |
| Jun 10, 2022 at 15:24 | comment | added | user57037 | That should work. That particular mosfet has 185 mOhms of resistance when on. Make sure that is not a problem for your application. | |
| Jun 10, 2022 at 15:16 | comment | added | DKNguyen | Note that reverse polarity (reverse voltage at the inputs driving current backwards) is different than load dumping (the load producing a voltage higher than the input driving current backwards). A diode protects from both, this does not. | |
| Jun 10, 2022 at 13:39 | history | became hot network question | |||
| Jun 10, 2022 at 8:52 | answer | added | Arcatus | timeline score: 6 | |
| Jun 10, 2022 at 8:12 | answer | added | vu2nan | timeline score: 3 | |
| Jun 10, 2022 at 5:40 | answer | added | user4574 | timeline score: 12 | |
| S Jun 10, 2022 at 5:35 | review | First questions | |||
| Jun 10, 2022 at 8:16 | |||||
| S Jun 10, 2022 at 5:35 | history | asked | alexoiunt1 | CC BY-SA 4.0 |