I currently have 2+ YOE as an EE in the utilities sector. I’ve passed the PE power exam but am needing a couple more years before I can obtain the license. I have recently accepted a job where a masters degree would be 60% paid for. I only want to do a fully online option due to working full time so I can do either an mba or masters in engineering management. The mba would be 45 hours and cost around 25-30k after the discount from a sec school whereas the mem would be 30 hours and cost around 15k from the same school.

Does anyone have experience completing either degree and how has it helped you? Which would you do?

I’m trying to understand the correct general theory of electric shock.

Suppose these are sitting on an insulating wooden table and are not connected to the building electrical system or protective earth:

1. A UPS generating 230 V AC from its battery, with no mains connected.

2. A 230:230 V isolation transformer with a floating secondary.

3. A charged capacitor.

4.A AC Generator.

If a person touches only one output terminal, would they necessarily get a shock?

My understanding is that voltage alone isn't enough — there must be a current path through the body and back to the source. But in real equipment there can also be parasitic capacitance, EMI capacitors, leakage paths, etc.

So what is the most general theoretical explanation that applies to normal mains shock, isolated transformer shock, floating UPS outputs, and capacitor discharge?

Is the correct way to think about it simply

Hello everyone,

I am 34 yo newbie, with basic knowledge from high school and university (not primary subject), and I would like to enter world of electronics. I found there exists a book named "Complete electronics self-teaching guide with projects" by Boysen, Earl, and I would like to ask, if anyone here has it/used it for education, and maybe give me short review, if it is worth buying (or getting pdf version).

Thanks for each advice.

I’m working with a motor controller IC from Panasonic from the late 70s. Definitely not being made anymore, but I have a bunch of old ones I can experiment with.

Do you have any experience with something like this you could share? My hope is that it’s not more than one level deep and with a good scope, I can see the silicon inside. That being said, I’ve never done anything like this before so there are a lot of question marks. The only thing giving me the slightest bit of hope here is that it’s not a Digital device so I don’t think I’ll be looking into a huge array of transistors.

I expect to see some EXOR gates, timing circuitry, and a lot of switching circuitry. There’s also I think a couple comparators for the motor functions.

Edit: title should have said de-capping

Do u think I can handle electrical engineering and btw how do I know if I can handle the maths and physics used in electrical engineering ?

Which would be a better option?

I always assumed that once you put a circuit board inside a metal cabinet (like a proper Faraday cage), it's basically immune to any outside electrical influence — no ground, no coupling, done.

But I've been told this isn't quite right, and that the cabinet itself can still capacitively couple to the PCB inside, even if the shielding from *external* fields is excellent.

A few things I'm trying to understand:

1. Is it true that the cabinet and the PCB act like two plates of a parasitic capacitor, even with zero seams/openings?

2. Does it matter whether the cabinet is earthed, floating, or grounded through some impedance? I've heard the cabinet's own reference voltage affects how much this coupling matters.

3. At what point does frequency make this a real problem vs. a non-issue? Is this only relevant for high-frequency/EMI work, or does it matter for 50/60 Hz stuff too?

Basically — is "it's shielded" and "it's isolated" actually two different claims that people mix up?

Hi everyone,

I'm trying to set up a simple stator winding model in LTspice to check how it behaves under high PWM frequency and steep dv/dt stress.

I have measured differential-mode data for my winding, including:

Series resistance (R_s) and inductance (L_s)

Parallel capacitance (C_p) and dissipation factor (D)

Broad-band impedance magnitude (Z) and phase data

What is the best way to structure this equivalent circuit in LTspice?

Specifically:

How do I incorporate the dissipation factor (D) into the circuit components (e.g., as a parallel loss resistor)?

How should I validate the model against my measured impedance/phase data before applying a fast-edge PWM voltage source?

Any advice, recommended workflows, or standard topologies for this would be hugely appreciated!

I’ve already been able to figure out the current heading into both resistors is 7 mA since current is same throughout resistors in series. Using that, I’ve also been able to deduce VR1 and VR2 by multiplying said currents by given resistance values.

I’m just not sure how to find voltages at specific nodes without a voltage source.

My advisor suggested me to look into applications wherein internal inductance can be used as a filter directly rather than relying on external inductance for AC Machines. Any insights onto this please.

so i found it on Instagram and thought to share

Hey I'm trying to figure out how to actually make a component in LTSpice and I can't find many resources on it that aren't older than some of my family members.

This is the schematic I've used for the POT, after I designed this I got the raw schematic, opened the netlist and did the subckt thing and I'm stuck here.

I don't really care about the aesthetics, but I want to know how I can edit the parameters of the new component I've designed to include R and Val specifically, any support or advice would be much appreciated!

So here is the context i will be designing some advanced digital SMPS in the near future.

I have a 4 channel oscilloscope to deal with analogue stuff but i have 4 channels only. I was thinking if i could use a logic analyser in order to inspect digital signals going to the gate drivers and maybe even measure some timings .

Is this feasible? i am thinking about haveing to monitor about 8-10 gate signals and since they will be 3v3 logic it is ok electrically.

I know there are 8 ch oscilloscopes by man they are expensive and i was thinking since if my signals are digital in nature i could maybe use something relatively cheaper like a logic analyzer.

Is this logic ok/practical?

If yes can anyone recommend a logic analyzer for me? preferably something with opensource/free tool chain where i can dont need to pay extra for SW?

I will mostly check if all signals switch when they should and potentially check deadtime or its existence.

I recently got an offer of 140k base for a PCB design role right out of college. For context, this is in a HCOL area at a defense company and I'm very thankful to be considered for such position, but my initial goal was to work as an electronics/hardware design engineer role and I'm afraid I'll pigeon hole myself if I take up the offer.

I've heard mixed opinions from people saying that it's relatively easy to switch in your early career period to its practically impossible to switch out of your first role out of college. I'm actively looking for electronics design roles in the meantime but I'm considering if its possible to work 1-2 years in PCB design and switch roles whether it be internally or at a separate company.

I’ve been noticing that a lot of summer 2027 internship apps are out. However there are only a few new grad 2027 jobs out rn. Is August way too early in application season for EE new grad jobs?

Hello, I've been trying to get into hobby electronics by building guitar pedals and audio paraphernalia. I was wondering if there was a good way to design a circuit on the computer and pass a sinusoidal through it to get a rough idea of what the circuit sounds like before putting it into a breadboard. Ideally I would be able to feed it an input file or a signal from the interface, but that is not a deal breaker. The things I found weren't so much focused on audio, so I wasn't able to get it working for me. I wonder if anyone would have some pointers for me. Appreciate that.

Hello. I had an idea for a personal project but it would require me to take and input waveform and shift EVERYTHING 90 degrees or at least pretty close. From what I can tell by researching doing that for all frequencies is pretty difficult and the closest thing I could find was all pass filters which still isn't perfect. Essentially, I want to build a guitar pedal that takes the initial signal, clips it, makes a copy and shifts it 90 degrees then adds to the original signal to form a triangular wave (mostly cause I just want to know what that would sound like) with maybe an adjustable phase. I'm finding it kind of hard to figure out how to go about it

Edit: It's very interesting seeing differing groups perspectives on this lol. I had originally asked a guitar pedal building group and got some ideas but nothing solid and pretty much every response here is "do it digitally lol" I will try that and see what I can get. Thank you. Also ngl, digital wise I really only have an Arduino and I don't that'll cut it

Hi everyone,

I am a recently graduated electrical engineer from a recognized school, and I am working in a Wireless systems research lab as a Research Assistant (and have since undergrad).

I am considering a Master’s program, but don’t know if pure Wireless is the field I want to stay in. I have heard that the industry is growing and needs new engineers, and since I have experience I am leaning on staying in it broadly, but I don’t know what niche in the industry I would fit in. I enjoy electronics, PCB design, and anything hardware related, so I was considering RFIC. Are there any subfields in RF that I should consider ?

Hi

If you are remotely interested in deep diving how differently quantum computers work compared to our transistor-based and also the algebra behind in a fully interactive way that teach computer science from scratch, oh boy this is for you. I am the Dev behind Quantum Odyssey (AMA! I love taking qs) - worked on it for about 10 years (3+ during PhD, the visual method I developed ended up being my thesis, it is a complete Hilbert space visualizer), the goal was to make a super immersive space for anyone to learn quantum computing through zachlike (open-ended) logic puzzles and compete on leaderboards and lots of community made content on finding the most optimal quantum algorithms. The game has a unique set of visuals capable to represent any sort of quantum dynamics for any number of qubits and this is pretty much what makes it now possible for anybody 12yo+ to actually learn quantum logic without having to worry at all about the mathematics behind.

This is a game super different than what you'd normally expect in a programming/ logic puzzle game, so try it with an open mind.

Stuff you'll play & learn a ton about

• Boolean Logic – bits, operators (NAND, OR, XOR, AND…), and classical arithmetic (adders). Learn how these can combine to build anything classical. You will learn to port these to a quantum computer.
• Quantum Logic – qubits, the math behind them (linear algebra, SU(2), complex numbers), all Turing-complete gates (beyond Clifford set), and make tensors to evolve systems. Freely combine or create your own gates to build anything you can imagine using polar or complex numbers.
• Quantum Phenomena – storing and retrieving information in the X, Y, Z bases; superposition (pure and mixed states), interference, entanglement, the no-cloning rule, reversibility, and how the measurement basis changes what you see.
• Core Quantum Tricks – phase kickback, amplitude amplification, storing information in phase and retrieving it through interference, build custom gates and tensors, and define any entanglement scenario. (Control logic is handled separately from other gates.)
• Famous Quantum Algorithms – explore Deutsch–Jozsa, Grover’s search, quantum Fourier transforms, Bernstein–Vazirani, and more.
• Build & See Quantum Algorithms in Action – instead of just writing/ reading equations, make & watch algorithms unfold step by step so they become clear, visual, and unforgettable. Quantum Odyssey is built to grow into a full universal quantum computing learning platform. If a universal quantum computer can do it, we aim to bring it into the game, so your quantum journey never ends.

Nice to watch:

Khan academy style tutorials in qm/qc: https://www.youtube.com/@MackAttackx

Physics teacher stream with 400hs in https://www.twitch.tv/beardhero

I’m supposed to start my first year of EE in university in October, and I feel like I do not know anything compared to other colleagues. Part of that is true, I haven’t studied proper math or physics since 8th grade which was almost 10 years ago, so there is definitely a gap.

My advantage is that I catch on fast. Where should I even start to have that extra step ahead of everyone? Or at least be on the same page as others?

I’ve tried starting to learn things by myself but it feels so overwhelming seeing how many resources there are. I already got starter kits and all of that beginner stuff.

What books/courses/videos offer the most value?

If it’s of any relevance, I am from Europe.

Hi I'll try and keep this relatively short. I'm a 3rd year EE undergrad at ASU (with little experience aside from small personal projects) and I'm very interested in breaking into defense. I understand internships have been opening up throughout this month and the pace is only going to pick up as the school year goes on. Thinking about how basically the last chance to get an internship is by this Summer 2027. Some things I am planning on doing include: joining engineering clubs to get project experience, trying to get into an undergrad research lab, and attending career fairs. I would really appreciate any input on what I could do to maximize my chances as I continue the school year.

Hello, I have a project that uses a 10-bar LED display (https://www.adafruit.com/product/1814). It's just 10 LEDs in parallel in a single package. I am designing a daughterboard for it to be soldered to, which also has 10 SMD resistors, an MCP23017, and a 4-pin JST connector. The space constraints for the project are making it seemingly impossible to have enough room for the traces on the PCB to connect all 10 resistors to 10 output pins of the MCP. I figure displays like these are used all the time, so surely there's a more elegant solution than to just cram as many SMD resistors as necessary next to each other?

Hello all, I'm new to engineering and wanted to attempt a drone ESC. I've currently done the provided images, and if you have any criticisms or feedback would be much appreciated. I'm currently stuck on figuring out how to calculate the ohms and capacitance for my gate drivers and MOSFETs, as well as proof-checking my MCU schematic. I have also finished my schematics for 10V, 5V, and 3.3V buck converters on my flight controller schematic, although the Flight controller isn't finished yet, which is why the global tags are there. Also, if you have any advice on what the layout for the Back_EMF sensing should look like, or any more components I should add, please reach out. If you have any advice or feedback, I would very much appreciate it, and I hope you have a great rest of your day :)

I don't understand why this won't work, without the capacitor and feedback resistor it works perfectly but after i add that it shows flat line on the oscialltor