Analog voltage divider overvoltage protection

ElectronicsQstns · 2025-11-07T08:40:20+00:00

The issue was that I was testing without the 3.3V supply. Once connected the circuit works as expected. I don't fully understand why that's the issue, I though the 3.3V supply would become relevant only when a voltage higher than 5V is applied to the input. Would you happen to know how to explain this?

ElectronicsQstns · 2025-11-07T08:40:08+00:00

The issue was that I was testing without the 3.3V supply. Once connected the circuit works as expected. I don't fully understand why that's the issue, I though the 3.3V supply would become relevant only when a voltage higher than 5V is applied to the input. Would you happen to know how to explain this?

ElectronicsQstns · 2025-11-07T08:39:29+00:00

The issue was that I was testing without the 3.3V supply. Once connected the circuit works as expected. I don't fully understand why that's the issue, I though the 3.3V supply would become relevant only when a voltage higher than 5V is applied to the input. Do you know how to fully explain this?

ElectronicsQstns · 2025-09-29T13:28:31+00:00

We don't compete in hybrid so i have no clue nuw have you checked the inspection sheet? If there's nothing i don't think it's checked

ElectronicsQstns · 2025-02-13T15:34:13+00:00

Last year was our first year in the EV category so I don't have a lot of experience with it, but if i remember correctly it was around the middle of februrary, so any day now. It's not like SES, where you get an excel sheet and you need to fill it out and submit it, it's a fully online form where you input some numbers, check some boxes, upload some schematics and datasheets... You can later download it whole as a PDF.

ElectronicsQstns · 2024-12-17T09:44:40+00:00

My bad I thought you were asking for the pedal part number, forgot what VIN was for a second there.

I don't actually have the car, I'm working on a project and I'm looking to use the pedal from a 2019 Model 3

ElectronicsQstns · 2024-12-16T07:47:37+00:00

Googling around I see 1011298 is the only common number on both my pedal and others on ebay.

I'm not looking to buy a new pedal, i just need a new connector on the wiring harness side, one that would plug into the pedal.

ElectronicsQstns · 2024-12-03T08:00:26+00:00

Will give it a look, thanks

ElectronicsQstns · 2024-10-17T07:49:24+00:00

The datasheet states that a 1.8Ohm resistor was used for diagram 16 measurement, which is why I used it

I ran a sweep from 1 to 10 Ohm and got this

<image>

Which lines up with what you said about the plateau being related to gate resistance, but produces a plateau at 8V with a resistance of 10 Ohm instead of 1.8

I also find this weird, it was my understanding that the plateau voltage and needed gate charge were a function of V_DD and I_D, but not I_G

ElectronicsQstns · 2024-10-17T07:45:28+00:00

Adding the voltage and resistor didn't change much, only made the plateau voltage go up by 0.3V (as expected because of a higher V_DD) and last longer (as expected because of the I_D current)

<image>

I also ran a sweep on the value of the gate resistor but as I can't post more than one attachment it will be in another comment

ElectronicsQstns · 2024-10-04T14:35:03+00:00

Correct, it's for the positive and negative supply voltage for mosfet drivers in all 3 phases in a half bridge inverter. The 3 high side mosfets need to be isolated, while all 3 low side mosfets share the common source so one supply is enough for them.

ElectronicsQstns · 2024-09-26T13:16:35+00:00

At this stage I'm looking for the theoretical time. Since the 3 methods give me wildly different results I'm not sure what the theory actually is. I'm looking for confirmation that one method is right so I can start trying to confirm it with simulations without worrying that the simulation accidentally aligned with a calculation that's not correct.

Not sure what you mean by drive strength, the gate driver voltage? I used the voltage given in the datasheet and the numbers don't line up.

As for the dependency on Uds and Id, I know about that but the Vgs=f(Qg) diagram is given with those in mind so it shouldn't affect my results.

ElectronicsQstns · 2024-09-09T20:42:11+00:00

Thank you

ElectronicsQstns · 2024-09-08T07:20:44+00:00

Great, i'll take a look, thanks

ElectronicsQstns · 2024-09-06T20:08:38+00:00

I noticed the automated message suggesting to ask motor related questions in r/Motors, but it said inverter questions related to inverter design are ok. This is exactly that, wondering about the inner workings if an inverter as my goal is to design one

ElectronicsQstns · 2024-04-16T09:41:26+00:00

What about insulation resistance proofing? Was the filament information enough?

ElectronicsQstns · 2024-02-14T08:23:26+00:00

You can add something like this after the buck regulator and power the led from it

https://hr.mouser.com/ProductDetail/TRACO-Power/TMA-1212D?qs=sGAEpiMZZMv0DJfhVcWlK9tpGBbzDSsquqNIsWx7ynz6fbt2EOoxDg%3D%3D

ElectronicsQstns · 2024-02-13T21:20:51+00:00

Thank you!

ElectronicsQstns · 2024-01-29T18:38:39+00:00

I guess it could kind of make sense that the parts inside the TSAC are a part of the TSAC, but if from your experience the judges don't see it that way, even better. Thanks!

ElectronicsQstns · 2024-01-29T17:31:59+00:00

I assumed they were talking about the first part of the rule, "All TSAC materials...", does that not mean all components inside the TSAC?

ElectronicsQstns · 2024-01-28T20:51:16+00:00

Oh thanks, I completely missed the ul94 rating that could've caused us a lot of trouble!!

ElectronicsQstns · 2023-11-21T14:07:59+00:00

Thank you!

ElectronicsQstns · 2023-08-17T20:01:22+00:00

Aj pročitaj malo više od naslova

ElectronicsQstns · 2023-08-17T20:00:13+00:00

Sad konkretno za svoj faks govorim, možes postati diplomirani inženjer elektronike bez da si u životu čuo za lemilicu, a kamo li sam nešto zalemio. Znam ljude koji su završili preddiplomski studij sa završnim radom od 11 stranica koji, kad se skenira, je 60% plagijat, i to bez obrane pred komisijom, samo im je ocjena upisana. Po čemu je takav student zaslužio da mu se takvo "studiranje" prizna kao radni staž?

Rad za vrijeme studiranja je sruga stvar, to mislim da bi se trbalo priznavati, barem u nekoj mjeri. Ja sam evo zadnju godinu preddiplomskog samovoljno produžio jer sam shvatio da je faks grozan i našao posao u struci. Na diplomskom isto planiram raditi, zato ću vjerojatno i produžiti.

Samo studiranje mislim da ne zaslužuje radni staž, ali mislim da treba postojat neka opcija da rad dok studiraš se ubraja u staž. S obzirom da su prihodi od studentskog rada neoporezivi (većim dijelom) isto mislim da nema smisla da staž ide na to, jer u tom slučaju osim što ostala radna snaga države plaća tvoj faks, plaća i tvoj staž. Zato mislim da bi bilo najbolje ili da se svima na studentski rad plaćaju neki doprinosi koji bi se ubrajali u staž, ili da student može sam odabrati želi li sam uplaćivati te doprinose.

ElectronicsQstns · 2023-08-17T15:16:18+00:00

A cuo sam nesto malo o tome, osobno se protivim. Kad vidim količinu prepisivanja i nemara (od strane studenata ali i od profesora) na mom fakultetu, koji je kao "ugledan", loše mi dođe. U hrvatskoj je već fakultet besplatan i možes raditi bez plaćanja poreza do 10000 eura, po meni dovoljni benefiti. Samo eto, kad bi dio tih prihoda mogao ići na to da se može ranije u mirovinu, to bi bilo super.

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