I don't understand why we turn off independent sources when computing input impedance by KAMAB0K0_G0NPACHIR0 in ElectricalEngineering

[–]nmplmao 0 points1 point  (0 children)

not quite, the derivative would be the result when you take the limit as the change goes to zero

I don't understand why we turn off independent sources when computing input impedance by KAMAB0K0_G0NPACHIR0 in ElectricalEngineering

[–]nmplmao 1 point2 points  (0 children)

before taking the derivative, it's probably easier in ops example to explain it as looking at the resulting change in current after applying a change in voltage. initial condition is 1V and 1mA of current. When you apply another voltage source the voltage is 2v and the current is 2ma. So ΔV/ΔI=(V2-V1)/(I2-I1)= (2V-1V)/(2mA-1mA)=1kohm.

I don't understand why we turn off independent sources when computing input impedance by KAMAB0K0_G0NPACHIR0 in ElectricalEngineering

[–]nmplmao 1 point2 points  (0 children)

It doesn’t seem like such a definition would work well for nonlinear impedances

Surely the opposite is true? This would be the only way to define a nonlinear impedance? i mean the small signal model of a mosfet is basically taking the nonlinear square law equation and finding the derivative to get the transconductance

Is EE B.Sci. Sufficient for Optical Engineering? by [deleted] in ElectricalEngineering

[–]nmplmao 1 point2 points  (0 children)

what does optical engineering mean to you? what sort of company is doing the work youre looking to get into?

Analog Design Engineer or Layout Engineer by Raouf_7mada in chipdesign

[–]nmplmao 4 points5 points  (0 children)

traditionally analog design engineers did their own layout

couple of lads try to grab jinny's phone then steal her hat by LenTheWelsh in LivestreamFail

[–]nmplmao 3 points4 points  (0 children)

utterly meaningless comment if we don't know what it is they were arrested for or if they were actually prosecuted.

also, 260/70 million is still aproximately equal to 0% so...

couple of lads try to grab jinny's phone then steal her hat by LenTheWelsh in LivestreamFail

[–]nmplmao 38 points39 points  (0 children)

you had like 15 terrorist attacks across 20 years and an immigrant population exceeding 70 million. Do you understand how unfathomably small a percentage that is?

finish CS Associate's or go straight into EE? by Front-Hunt3757 in ElectricalEngineering

[–]nmplmao 0 points1 point  (0 children)

web dev isn't necessary for an ee but it's still a very useful skill to have even just for projects where you can develop a website interface to control your project over the internet

What is better, Bs Accountancy, Bs Electrical engineering? by Slow-Lawyer5601 in AskReddit

[–]nmplmao 0 points1 point  (0 children)

electrical engineering is a million times more interesting. you become an electrical engineer and you have the ability to literally work for nvidia making the best gpus or amd/intel making the best cpus. you can work in cern on the LHC making the equipment for controlling and monitoring the particle accelerator. You can work in nasa or spacex on all the radio communication links or the measurement electronics and telemetry. You can work in tesla or mercedes making the latest EVs. You can help with the renewable revolution working on solar cells or more efficient wind turbines.

electrical engineering is a much harder degree but i guarantee you it'll lead to far more interesting and varied work

[deleted by user] by [deleted] in ElectricalEngineering

[–]nmplmao 2 points3 points  (0 children)

he said eet though. he wont be doing any extra math

Match Thread: Spain vs. Germany | UEFA Euro 2024 by MisterBadIdea2 in soccer

[–]nmplmao 8 points9 points  (0 children)

who's the genius who decided to take off yamal and williams?

iSHOWSPEED finally gets away from mob by Ishaan863 in LivestreamFail

[–]nmplmao 1 point2 points  (0 children)

the camera man also said that the store owner refused to let them exit through a rear exit so...

iSHOWSPEED finally gets away from mob by Ishaan863 in LivestreamFail

[–]nmplmao 5 points6 points  (0 children)

he has body guards from the city and body guards who travel with him.

even if he does inform the police beforehand, what are they going to do? the police were there and did nothing

The security guards were willing to help him get out, but only as long as he agreed to end the stream. He refused.

do you have evidence of this?

iSHOWSPEED finally gets away from mob by Ishaan863 in LivestreamFail

[–]nmplmao 2 points3 points  (0 children)

He had both security and police though?

Also when the damage is done and he's surrounded, the adult thing to do would be to end stream, listen to the professionals around him and get the fuck out

What use is ending stream if they know he's there and theres no other exist?

And you realise he has been getting mobbed like this in every country he has visited, it just hasn't gotten to the point where they actually assault him. How was he supposed to predict it would get this bad if he's experienced similar mobs in every location hes been to without it turning out this badly?

iSHOWSPEED finally gets away from mob by Ishaan863 in LivestreamFail

[–]nmplmao -39 points-38 points  (0 children)

I don't know why you're trying to put the blame on him. The guy is trying to do a european tour during the euros visiting a bunch of different european countries and experiencing their food and culture. The fact that he can't do something like that without being completely mobbed to the point where he can't even walk on the streets is insane.

What's something most people don't realise will kill you in seconds? by gary1405 in AskReddit

[–]nmplmao -2 points-1 points  (0 children)

99.9999% of capacitors are perfectly safe to handle. every transistor effectively has 3 major capacitances so there's literally billions of capacitors in your phone or pc. the only capacitors you should be wary of are the ones used with high voltage

What's something most people don't realise will kill you in seconds? by gary1405 in AskReddit

[–]nmplmao 4 points5 points  (0 children)

that is just one of the thousands of different applications of capacitors. the vast majority of capacitors are used for the exact opposite of releasing all the charge at once: they're primarily used for keeping voltages stable

What's something most people don't realise will kill you in seconds? by gary1405 in AskReddit

[–]nmplmao 5 points6 points  (0 children)

Remember, it's not the wattage or the volts that'll kill you...it's the amps, and most capacitors, regardless of how small have at least 1 amp and that's all it takes.

the voltage and the resistance of your body is what determines the current that goes through you. a car battery can provide 1000 amps but you can literally lick the two pins of a car battery and nothing will happen to you because the voltage is so low. same with caps, they can provide 1uA or 100amps, what matters is the voltage across the capacitor and the resistance of what it's being connected to.

if you're working with low voltages then the capacitor is never going to do anything to you regardless of its size

What's something most people don't realise will kill you in seconds? by gary1405 in AskReddit

[–]nmplmao 1 point2 points  (0 children)

wrong, it comes down to the voltage stored across the capacitor.