Timeline for Combining dirty 12V inputs with delicate micro controller
Current License: CC BY-SA 3.0
9 events
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| Jan 3, 2017 at 12:52 | history | edited | svenema | CC BY-SA 3.0 |
added fuse and TVS diode
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| Jan 3, 2017 at 11:39 | comment | added | svenema | Hi Andrew, thank, an interesting paper. Too bad the Maxim chips are not through hole. I'll do some more research down this road. Ideally the regulator has a fixed output of about 3.5-5V and can take about 10-40V input in an automotive environment. | |
| Jan 3, 2017 at 11:33 | vote | accept | svenema | ||
| Jan 3, 2017 at 11:33 | history | edited | svenema | CC BY-SA 3.0 |
added 3671 characters in body
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| Jan 2, 2017 at 19:16 | history | edited | svenema | CC BY-SA 3.0 |
added 81 characters in body
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| Jan 2, 2017 at 18:54 | answer | added | Asmyldof | timeline score: 7 | |
| Jan 2, 2017 at 18:53 | comment | added | Andrew Morton | You might want to consider a regulator which is designed for use in automotive applications. It will be able to cope with the higher voltage encountered in a "load dump" and will have a low quiescent current (especially important if your circuit is always on rather than switched on through the ignition switch). A more thorough explanation is at www.maximintegrated.com/en/app-notes/index.mvp/id/3928. | |
| Jan 2, 2017 at 17:19 | comment | added | Simon Richter | I think this is fine -- the regulator gives you a clean supply voltage for both the controller and the transistors, and the optoisolators keep the noise out of the signal lines as well. The current through the ATtiny and the transistors should also be small enough that the regulator doesn't get warm. | |
| Jan 2, 2017 at 17:05 | history | asked | svenema | CC BY-SA 3.0 |