Questions tagged [engineering]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
0
votes
0answers
31 views

I want to use acoustic sensors to locate an impact on the other side of a half inch piece of wood [closed]

I am currently constructing a project that will require me to be able to locate an object hitting the other side of a piece of wood. I would like to use multiple sensors so that when an object falls ...
-2
votes
0answers
69 views

What does this sine wave say exactly? [closed]

I am currently just trying to understand how sine waves function and what the readings they're giving mean. I have an example of a demodulated signal that I found and was wondering if anyone could ...
2
votes
1answer
83 views

Homework Help with Node Voltage

Hello, I just need a little guidance on if I am analyzing this circuit correctly using Node Voltage. Mesh and Thevenin Theorem resulted in Vy= 36V If i leave the ground where it is, the node after ...
0
votes
0answers
24 views

How would I use PhaseFrequencyOffset correctly in MATLAB?

So I am currently using MATLAB Live Script to run a script with a modulation index of infinity, but at this point im using 5. The programme itself is a synchronous demodulator using a non-coherent ...
1
vote
1answer
24 views

How to calculate the properties of spiral antena?

I noticed some articles about analysis of Archimedean spiral antena. My understanding is that the antena of such type is a compact one and it allows broadband performance. To be more precise I'd like ...
2
votes
1answer
36 views

Singular interval condition for Multi input in Optimal control

The definition of singulr interval is shown in Figure. I've struggled with this problem. I think the solution of this prob is "because if the E_j matrix is not singular, it means the System is ...
1
vote
0answers
31 views

Need some help with nodal analysis

I have this circuit where I'm supposed to find the current I. I know I'll find it by (V3-V4)/R10. I have done the nodal analysis, however, my teacher says that I have done my nodal analysis ...
0
votes
1answer
50 views

Need help with this transformer circuit

I need some help with this circuit. I have simplified it in three steps. The task is to find the current I. The values to e(t), Z1, Z2, Z3, Z4, and the turn ration N1/N2 are known. I'm not quite sure ...
1
vote
1answer
63 views

HOMEWORK: Need assistance inputing Mesh Analysis complex equations into TI89

Good Afternoon, I am having calculator difficulties in regards to inputing my mesh equations into my TI-89. The answer I am receiving is not the answer that was presented in the solution provided by ...
0
votes
0answers
33 views

Moore Sequence Detector for 2 sequence

I am currently working on making a two sequence Moore machine detector. I am having trouble as to how to have the machine detect my second sequence and how to make a state table with T flipflops from ...
2
votes
3answers
62 views

Question about nodal analysis with an ideal op amp circuit

Iam trying to do nodal analysis of this op-amp circuit, but iam not quite sure if I have done it correctly or if I have missed something. The op-amps are considered being ideal so there is no current ...
0
votes
1answer
77 views

How would this circuit work?

This is a frequency doubler from a graphene frequency doubler paper if anyone know the working with substituting a normal transistor instead of a GFET?
1
vote
0answers
54 views

State machine correct? 4b'1001 sequence detector

[![enter image description here][1]][1] Is this a correct state machine correct for detecting the 4 bit sequence 4b'1001? If any bit is out of sequence reset to the initial state. Once the last bit of ...
2
votes
1answer
623 views

kcl and kvl what is the difference

I am very confused in the terms of what is the actual difference between kcl and kvl? I don't want to have a question on a test and not know where to apply kcl and where to apply kvl? Please help and ...
1
vote
1answer
54 views

How can I make a “digital switch”?

It would work that way: An IR sensor is used as input, if it receives some IR signal, the input is 0. If it detects that input, it should output some voltage. If it detects that input again, iy ...
1
vote
0answers
44 views

Do the bremsstrahlung radiation size depends on the size of the accelerator?

According to https://apps.dtic.mil/dtic/tr/fulltext/u2/a351472.pdf HERMES III, a 16 terawatt pulsed power accelerator at Sandia National Labs, which fired electron beams with peak energy at 22 MeV and ...
1
vote
1answer
58 views

Can this be simplified even further?

Wondering if this could be simplified even further. Feels like I can do more with the 1000 ohm and the 2000 ohm resistors on the righthand side.
0
votes
2answers
69 views

What methodology to build an electronic system? [closed]

Electronic engineering is not my field but I enjoy build some very little electronic circuits for fun. When I try to build something, I have no methodology at all: I try, fail and try again until my ...
1
vote
0answers
74 views

I am trying to find Vc(t) for t ≥ 0

I am trying to figure out how to find \$V_c(t)\$ for \$t \geq 0\$ in this.
11
votes
2answers
2k views

Why use aluminum wire in an (old) TV degaussing harness

I used to take TVs apart for fun (and parts, and learn.) Some of the degaussing coils were beautiful -- nice, thick copper. Others were made out of aluminum wire. If I were engineering it, though, I ...
-1
votes
1answer
84 views

Ideal order to study EE [closed]

I'm currently studying Electrical Engineering (second year), and I have a lot of gaps in my knowledge. What would be the ideal order of topics (Ohm's law, capacitors, sinusoidal steady-state analysis,...
5
votes
3answers
166 views

Amplifiers without vacuum tubes or transistors?

Are there amplifiers that can work without vacuum tubes or transistors? Is it possible to create a working amp with high power without vacuum tubes or transistors?
35
votes
5answers
13k views

When Intel / AMD choose their Nanometer Processes, why were the specific numbers, 5, 7, 10, 14, 22, 32, 45, etc chosen?

When looking at the roadmaps for the CPU manufacturing process https://wccftech.com/intel-expects-launch-10nm-2017/ 10 µm – 1971 6 µm – 1974 3 µm – 1977 1.5 µm – 1981 1 µm – 1984 800 nm – 1987 600 nm ...
1
vote
3answers
51 views

Question about RLC circuit and struck in a problem, in the calculation getting current as infinity for the given values

Question about RLC circuit and struck in a problem, attached the photo related in the calculation getting current as infinity for the given values.any idea how to move forward
0
votes
0answers
33 views

lyapunov function derevation

hi could you please help me to know how did they find the derivative of V lyapunov function
0
votes
0answers
28 views

Split Inverter Air Conditioner installation location

I'm an working for an organization which provides solutions for Air confitioning in sri lanka. I came across this issue few weeks back and still tring to solve it. Anticipating Your utmost support. ...
0
votes
0answers
50 views

Understanding MOSFET circuit

I don't understand how I can find RS, RD and RG so that ID=.1mA. Help.
0
votes
2answers
369 views

Designing a Moore sequence detector using three always blocks

Trying to implementing a Moore state machine using three always blocks. The Moore state machine has two inputs (ain[1:0]) and one output (yout). The output yout begins as 0 and remains a constant ...
0
votes
0answers
24 views

Need help to convert Reverse Engg files to Garber files

i've generated .nod .par .edf .dfx .pdf and many other files from reverse engineering of a PCB. how can i generate Garber from these files?
0
votes
1answer
95 views

Not understanding NPN transistor in circuit

I'm sure an analog of this question has been asked before, but I've spent the last day researching this and I've decided it's time to reach out for some help. I'm working my way through Electronics ...
0
votes
1answer
59 views

Can I design a photovoltaic system, or is that unrealistic?

I'm new to stack exchange, so ... feel free to ask for clarification, as many posters seem to be rather vague on their questions, from what I've seen. A little background: I'm a recent graduate in ...
0
votes
3answers
147 views

How does a transistor sweep generator work?

In particular I'm wondering about oscilloscope sweep generators, but the concept I don't understand remains the same for any type, which is, what does the triggering? I know a transistor can be ...
0
votes
2answers
38 views

EFT Simulator Duration Time Setting / IEC 61000-4-4 / KeyTek CE 40

I've got an antique EFT simulator, it's a KeyTek CE-40. I'm debugging a device for EFT as per EN 61000-4-4. The manufacturer doesn't provide support for the device anymore and I don't have a product ...
-2
votes
3answers
92 views

What does “p-p” mean in a spec sheet?

I've been searching for what these unit abbreviations mean, and can't seem to find anything. I'm hoping for some help. I'm looking at a spec sheet for a Vacuum fluorescent display For the Grid and ...
0
votes
2answers
118 views

What do you do to help you grasp a concept or understand something you're seeing for the very first time?

Often in industry you come across a lot of different devices or even concepts you're seeing/hearing for the very first time. Things like encoders, resolvers, PID, pressure transmitters etc. I would ...
1
vote
4answers
82 views

Special soldering requirement

I have a special requirement on soldering which I do not know how to achieve. I now need to solder cable to large copper part, which require high solder power. On the other hand, the temperature of ...
0
votes
1answer
51 views

Microphone Pre Amp Book? [closed]

I'm wondering if there's a book that discusses resistors, capacitors, inductors, transistors, transformers, impedance, op amps, power supplies, and the general circuitry of a microphone pre amp. Thank ...
1
vote
1answer
44 views

Graph theory for Networks

To use the formula, [Bf][Zb][Bf'][I] = [Bf][Zb][Is] - [Bf][Vs] for the concerned, or any tree, should [Vs] and [Is], be written with respect to the directed tree I've taken, or with respect to the ...
16
votes
6answers
2k views

Does the word voltage exist in academic engineering?

In Portuguese, the word voltage does not exist. Neither academic nor technical. In engineering, Portuguese speakers refers to volt as electric tension or potential difference. The word voltage was ...
0
votes
0answers
88 views

Whenever two system or sources are coupled they should have same current sink or common reference point (say ground). How to realize this in ECG?

Electrode (Ag-AgCl) are placed at different part and directly fed to positive and negative input of differential amplifier. How can we realize human body and amplifying system have same current sink ...
1
vote
1answer
81 views

Does these terms consider the same Voltage, electric potential, and potential difference

What are the differences between these terms ? do they are considered the same
-1
votes
1answer
95 views

Can you connect transistors directly to high voltages or is there precautions neccesary?

I understand that the circuit above will simply work, but what if the voltage input from the battery is significantly higher and the necessary voltage for the motor is high as well? Can you still ...
1
vote
1answer
201 views

Find rotor stator loss in a 3 phase delta connected induction motor?

I'm trying to work out stator input power of a 3 phase delta connected induction motor. I have the equation Stator Input Power (P1), where P1= Pm + rotor copper loss + rotor stator loss. I have Pm ...
0
votes
2answers
563 views

Should startup torque be higher in value than full load torque in an induction motor?

I found out values of my 3 phase delta connected induction motor for full load torque, maximum torque and startup torque. My maximum torque was higher than my full load torque, but the thing I'm ...
1
vote
1answer
163 views

Torque in a 3-phase delta connected induction motor

I know the equation for torque is T=[m*(N2/N1)^2/2*pi*Ns]*[s*E1^2*R2/R2^2+(s*X2)^2] N2/N1 is the effecting rotor-stator turns ratio. I have it written ...
1
vote
1answer
90 views

Finding value of slip in an 3-phase delta connected induction motor

I know the equation for slip is s= (Ns-Nr/ns)x100 and that to find Ns is Ns= f/p. I have been given ...
1
vote
1answer
116 views

what is cut off current in dc motor?

This question is conceptual question. May it is easy for engineers to explain cut off current in DC Motor. In our formula, we are finding motor torque, $$T_{motor} = C_{motor} \times (I_{cut} - I_{...
0
votes
3answers
406 views

Using Thevenin's theorem, how do you find the Thevenin voltage?

The above image shows a circuit. It is required that we simplify the circuit using Thevenin's theorem to find the Thevenin voltage, current and resistance. I've done a countless number of problems ...
2
votes
1answer
687 views

Bjt circuits, “Vbe = 0.7 at edge of conduction”

could you explain what "eoc" and" eos" (edge of conduction and edge of saturation) is? The problem says "Vbe = 0.7 at edge of conduction" , is that in cutoff mode?
0
votes
1answer
51 views

In which branch of engineering can I learn about display technologies like LCD, LED, OLED? [closed]

I am finishing high school this year and want to pursue a career where I can learn and develop display technologies like LCD, LED, OLED, and flexible displays. Can somebody please tell me what branch ...