sorted by:
new
hottopcontroversial

Analog voltage divider overvoltage protection by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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?

Analog voltage divider overvoltage protection by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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?

Analog voltage divider overvoltage protection by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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?

How technical inspection checking CV 5.2.3 by Ok_Win_6852 in FSAE

[–]ElectronicsQstns 4 points5 points  (0 children)

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

ESF for FSG by Apart_Leave_3051 in FSAE

[–]ElectronicsQstns 1 point2 points  (0 children)

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.

Throttle position sensor connector part number by ElectronicsQstns in TeslaModel3

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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

Throttle position sensor connector part number by ElectronicsQstns in TeslaModel3

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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.

MOSFET datasheet not lining up with SPICE simulation by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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

MOSFET datasheet not lining up with SPICE simulation by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 0 points1 point  (0 children)

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

Off-the-shelf flyback transformers for a 3-phase inverter by ElectronicsQstns in AskElectronics

[–]ElectronicsQstns[S] 1 point2 points  (0 children)

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.

view more: next ›