Welcome to /r/ElectricalEngineering!

Hi, due to some bureaucratic bullshit, I need to take a logic design course that won't even contribute to my master's degree as a foundational requirement. I could take it at the university I'm currently at, but can take it at a community college or online college course (can't be Udemy or similar). I'm exploring my options to see if I can find an easier/cheaper course. It would need to cover roughly the same content as this class description.

CSEN 921C. Logic Design

Intense coverage of topics related to logic design. Boolean functions and their minimization. Designing combinational circuits, adders, multipliers, multiplexers, and decoders. Noise margin, propagation delay. Bussing. Memory elements: latches and flip-flops; timing; registers; counters. Programmable logic, PLD, and FPGA. Use of industry-quality CAD tools for schematic capture and HDL in conjunction with FPGAs.

I just need a passing grade, so I don't really care where I take it, but am looking for the easy way out. If anyone can point me towards an online college course that covers these topics or a community college course close to San Francisco, that'd be great.

Anyone registered with them as a Master Installer/Designer?
Some PEs I know that consult (design and/or inspect) in the LPS business have the MID certification.
https://lightning.org/certifications/master-installer-series/

I want to follow in their footsteps but the annual dues of $700 sounds like a rip-off.

Please feel free to comment if you have any views regarding LPI as an entity, LPS as a field. Any advice and remarks are welcome.

I know there are grid following and grid forming inverters. I also know that inverters can have V-f or P-Q control and making them like a voltage source or current source.

But how are they related? Must a grid following inverter be controlled with P-Q? Must a grid forming inverter be controlled with V-f? Is there any one-to-one relationship? Are they on two different control layers?

I imagine even the best rectifiers don’t flatten DC output completely so I was just curious if there is a standard ripple for all batteries or if it iust depends on the battery. Also what would happen if you charged a battery with a source that wasn’t rectified enough

I feel like I'm going crazy, because no one will give me a straight answer. Please help!

This is about SCCR and KAIC.

Let's say I have a single-point-connection for some industrial equipment. The single-point is a control panel with a sticker label/nameplate that says the SCCR is 5 kA.

I ran a short circuit study, and the available fault current at the equipment is about 25 kA.

I have a branch breaker in a switchboard 100ft away rated for 65kaic, but there is no other OCP before the control panel of the equipment.

THE QUESTION IS: IS THE (CONTROL) PANEL PROTECTED FROM SHORT CIRCUIT? Does the equipment need additional listing/labeling? Does the equipment need to be UL listed for a series rating with the breaker?

P.S. Please, please, PLEASE provide the names of any UL listing sections (specific sections of UL 508a or otherwise), NEC code sections or IEEE standards or papers that clearly spell this out.

I need something to convince myself that that there is nothing to worry about, or else something to show my coworkers. I'm assuming it's a me-problem, but would like to prove it.

Im an new graduate with no internship experience due to having to work throughout my undergraduate. I’ve had 2 power related interviews where i partially got technical questions correct but that’s not good enough for anyone i presume. My question is how do you guys prepare for the interview? Do you anticipate what questions might be asked? I feel like i know absolutely nothing and need tips on how to better myself to become a better candidate.

Do you love your job? Tell me about it!

I would love it if some electrical and ECE engineers could provide some advice and information about their experiences in their fields. I've completed my first year of my Bachelor of Engineering (in Australia - so l'd love to hear some advice from fellow Aussies!), and am now deciding on where I would like to specialise.

At first, I thought I wanted to do electrical, and to be honest I forgot that electronics and computer systems was an option. I thought I would do electrical because I find that electricity is like magic, it's so intangible to me and yet we get to learn all these rules to control it and make it work for us. I only recently realised I could do ECE, which I feel I would enjoy due to the coding aspect!

I really liked the idea of electrical due to its versatility as tar as a degree goes. I want to be able to work in location that isn't a major city one day when I'm further on in my career, and I thought electrical would give me that opportunity. I'm not sure if ECE would also give me that opportunity.

Basically, what I'm saying is I don't know enough! I've come here looking for advice on how to decide and what the benefits are of both. I'd love to hear from people who love their job in electrical or ECE, and why they chose that pathway!!! Thank you so much for any advice

I have been working as a substation designer for about a year and a half now and have taken on waaaay more responsibility and developed my technical knowledge so much more/faster than other junior engineers within my company. I have taken 2 subs from kickoff to IFC doing the electrical design of every detail. I did this work mostly independently as I have lacked proper supervision which has made the process incredibly stressful. Because of the weight I have pulled in the past year I anticipate getting a raise in the new year and quite frankly I expect one and for it to be relatively significant. For reference I currently make ~37/hr and am 1.5 years out of school (not licensed yet). I have received 2 raises so far, the first 6 months after joining and the second 6 months after that each at 5%. I was happy with these raises at the time as they felt appropriate but now it feels different. I am not nearly the same value today that I was even just a matter of months ago. My question is what kind of raise can I realistically expect? Do I need to lower my expectations and just accept that it will take a while to progress the pay scale? Also, should I ask for a raise or just wait and see what I might get when the new year rolls around and possibly negotiate from there? If I do ask do I give a number? What kind of number? Let me know if more detail is needed on what I have done and brought to the table. Any help much appreciated!

;-;

I was a rf pcb designer for a few years. Wasn't a superstar but I got shit done, never had any major problems. Started a new job this week as a rf technican, the deal was that I stay a technican for a few months while I learn the technology(i applied and interviewed for an engineer job but they chqnged the title to technican when they gavr me the job offer). Today I didn't realize that a potentiometer on an amp i was using was a 20 turn, i turned it 5 times without seeing any gain and wasted hours trying to figure out why the circuit wasn't working until my boss pointed it out. He was mad and asked me if I even went to college. I never had to deal with a potentiometer before, i have been doing rf font and rf synth design, never even touched a potentiometer.. Overheard him talking to recruiters talking about replacing me and saw the job posting.

I love engineering but goddammit it, I dont want to deal with this shit. I don't like being judged. If I deserve to be judged then why am I putting up with this shit for a messly 100k. I'm at the point were I think i would be happier dokng Uber eats. I guess I'm not cut out to be an engineer. Sometimes, people try their best and it's not enough, why is it such a big deal if I'm not enough. I have no problem being not good enough but my family always put pressure on me like I'm some kind of genuis. I'm average intelligence and there's nothing wrong with that!

So many jobs ask for someone with knowledge of various power softwares. My college never taught these and now I feel its hard to break into a design job. Where can I learn these or is there some school that will teach these softwares so I can feel comfortable with them?

I am about to graduate college with an electrical engineering degree and a focus in Power Systems. I have been applying to positions at power consultancies, because I found that most of the interesting technical work at utilities gets outsourced to consultants. What are the industry stereotypes of the major consultants(POWER, Burns & Mac, Black & Veatch etc)? Are there any consultancies that you recommend to apply to/avoid? I am mostly looking for positions in Oregon, Washington, California, Colorado, New York, and Utah.

And just in general, what advice do you wish you had entering the field?

Hi I am electrical and electronics engineering student in Turkey. I am third grade now and when I working for my midterms I reilased something.

In two years in this field I mostly worked on practical side of the engineering. I worked on embedded systems, PCB designs, low level programming and so on. But I really don't care to much about school lectures because I think they are just not enough for getting me a job in the field.

I wasn't wrong about it since I found multiple internships and I probably start a part time job on a company that I worked as a intern last summer.

But as I am saying I just realized while working my exams I dont understand about things in lessons. I can solve problems and stuff. I can use the formulas and make calculations of course but I just don't understand why.

Like I cannot explain why do we use complex numbers while we working in AC analysis ( I just know the Reactive power isn't something real) but I can use them in equations and stuff. I cannot tell why do we use eulers number but can't say why etc.

I am sure that I can work as a engineer without explain any of them since my fellow students can't explain either and I didn't use any of them during my internship (it was about writing a firmware for communicating to Semtech SX1272) but I feel like it is cheating not to have a basic understanding of the math in the field.

So I decided to learn this things in my free time. Is it to late for it? or not knowing this stuff means that I wasted my time in school?

I feel like if idk this things I wouldn't be engineer or a scientist but just a technician or some sort.

I’m currently a freshman in EE and just learned that due to AP credits I can graduate in 3 years. Is it worth it to get a masters after that or go into industry a year yearly?

My homework questions is:

If DX contains 00EEH and AX contains 0980, what is the result of:

MOV BX, 0F0H

DIV BX

I felt like this was pretty straightforward, but I kept getting the wrong answer:

I do not understand why you need to combine AX: DX or why, when you combine AX: BX with the following equation, I multiply 238 (00EEH) * 65536 ( I am assuming the number 65536 is the size of the register; 16-bit =65536). Can someone please help with an explanation of the two parts?

Decimal value of DX: AX= (00EEH×65536)+0980H: (238*65536)+2432=15600000=EE0980H

Hello folks!

I work with electromechanical arcade machines, and I do probably 10+ projects a year. My main issue I'm having now is the harnesses and cabling on these machines. A machine can have from a few cables to a dozen of custom made harnesses. We do the machine in a week, and then lose another week just doing the documentation on cad.

1. I would like to know if there are some software out there that could help me with this job. I need to specify the cables, connectors, terminals, colors, functionality, dimensions, gauge etc... Open source is preferred but not a hard requirement.
2. There is any open format file to describe cable and harnesses?

Them I would like to know if I can use these files to generate a CSV or something like that to do process the wires on the cuting and stripping machine.

Thanks!

Lowly controls guy here - I have a project I'm trying to make some improvements on for our next system, but I believe I need to spec a different style motor, and I'm hoping to avoid going to a servo, for cost reasons primarily.

Basically, I'm running a ball screw moving a table through a stroke. I traverse at a high speed until I sense what needs to be cut and drop down to a feed speed until said cut is completed, sensor no longer is blocked and a slight delay timer times out. What I ran into with the first one we built is mechanical just gave me a design, said the math works, and we ran with it. This was true, but now cycle time is coming into play for our next one.

I was running with a Powerflex525 with 90hz as my top end and down to 5hz in process for the cut times. Most of the cycle is that high speed traverse at 90hz. I know most motors can be oversped, but a rule of thumb I was always told to stick to was keep it at 50% overspeed, online will tell you 120hz is fine, whatever. I'm more concerned on the low end, that 5hz we were using during the cut, and motor / drive reliability down so low. I could just get this designed with a different gear ratio in the box to speed up that low end, but then I need to be able to overspeed even further on the top end.

So my question here would probably be what kind of motor spec am I looking for to be able to push past that 120hz range? If the manual is to be believed, I can set up my VFD up to 500hz. The orignial project used a 0.25hp motor, inverter duty, driven by a 0.5hp Powerflex. I can upsize motor / VFD powers if necessary, but the compactness of the 0.25hp motor in question was nice for the application.

Original motor spec was a Nord SK 1SI40VH - 56C - 63LP/4 CUS TW for reference

i don't want to be mediocre anymore friends lend me a hand I'm barely passing and i can't remember most of the stuff i learn :'D

Right now I’m a university freshman in the EET program, and I plan on transferring to a different university to be study EE instead. That being said, I sometimes wonder if the classes I’ve taken (specifically Circuit Analysis and Physics 1)have been easier as my university does not have any engineering programs, only an engineering technician program. For example, in circuit analysis we didn’t cover how to use mesh analysis or Norton equivalent circuits, and now we’re starting AC circuit analysis. Next semester, I’ll be taking Physics 2, Calculus 2, a Python programming class and a technical writing class. I know this is a lot, but I really don’t want to fall behind at becoming a full EE, and I could really use some advice. Thanks for your time, I appreciate it!

If I have an AC source outputting, theoretically, 10 volts AC at 1 kHz, then if I connected this ac source to a transformer with a ratio of 1:10 for primary coils to secondary coils, then connected the output coil to a primary coil on a second transformer with a 1:10 ratio, then connected the secondary coil of this transformer to the primary coil of a third transformer with the same ratio, would I get an increase in voltage of 1:1000? For context, I am trying to make an arc lighter so current doesn't really matter to me. I just need to increase the voltage by a very large amount to around 10kV. If anybody has any other suggestions to get to 10kV, let me know.

Hey everyone,

I’m looking for some career advice as I make a shift in my professional path. I’ve spent the last 15 years in the energy industry, starting with hands-on field roles and moving up into operations engineering. Recently, I transitioned into a substation design team, which I’m excited about, but it’s a bit of a shift from my previous experience.

Here’s the catch—I have a degree in mechanical engineering, not electrical. I make a decent salary now, but I’m hoping to upskill to advance within substation design or related areas that could boost my earning potential further. I’m confident in my understanding of power systems and have a strong technical foundation, but I realize there’s a lot to learn specific to substation design. I’d appreciate any insights on:

1.	Key skills, software, or technical knowledge to focus on (e.g., AutoCAD, ETAP, grounding, relay protection, etc.).
2.	Recommended courses, certifications, or resources that could help bridge the gap with my mechanical engineering background.
3.	Strategies to leverage my field experience to add value in this design role.
4.	Potential pay range for experienced substation design engineers—and any tips on skills or specializations that could help me increase my earning potential.

Good evening everyone,

I have a capacitor that has blown, looking for a replacement, I am struggling to find a like for like.

Can anyone explain the text to me, specifically the R- symbol, I can't find anything relating to it, also I can't find a 471K but have found 470k with pf, again no explanation as to what it means.

Any help will be appreciated,

Thanks

I need to crimp tungsten wires for a probe that I am building and need a tiny copper crimps. Do you happen to know any company that carries such products?

I have a upcoming online interview with LADWP and I was wondering if you guys have any tips, advice or other things that would be helpful to study or good practice questions.Thank You.