Questions tagged [electrical]

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2
votes
1answer
116 views

Does cutting the covering of subwoofer wire affect the sound quality?

I have Sony 5.1 channel sound system. There is some cut on covering of subwoofer wire. The copper wire is not affected at all. So, I am curious to know whether it will leak the passage of sound and ...
0
votes
1answer
716 views

Crock pot on power inverter

I have a slow cooker crock pot thats uses 120 volts AC which range from 0.6 amps to 2 amps and consume electricity that ranges from 70 watts (low temperature) to 250 watts (high temperature). When I ...
0
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0answers
80 views

UPS vs Surge Protector regarding short circuits and quality of power

I did research before posting and it seems a UPS filters power so that it is constant and “filtered” additionally it seems to be able to protect against short circuits. Does a surge protector have ...
1
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0answers
54 views

Design of a 5kW residential Solar system with battery- need help with electrcial diagram

A design project asks for a design proposal of 5kW solar panel with inverter and battery system for a residential house. I have completed the energy estimation, panel size, orientation, and selected ...
0
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0answers
28 views

Battery Charge and Discharge Time Calculations

I am performing some calculations but struck with confusion whether I am doing it correct or wrong due to contradictions of these calculations on different calculators websites. I hope here someone ...
1
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1answer
264 views

Distance and voltage/watt loss?

I have read multiple posts on here regarding voltage/watt loss but I wanted to see how it would apply in this situation that I can not seem to solve using available resources. Maybe I just do not ...
0
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1answer
60 views

Can I change the battery connector on this model aircraft safely?

I am working on a project, and am required to build an autonomous glider (no propulsion). Weight is limited to 9oz, and we are using the Pixhawk 4 mini for flight controls. The power management board ...
0
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1answer
48 views

How do you wire a Marx Generator?

I have seen videos of people actually being able to power on a Marx generator with no problems whatsoever but however they never show the complete setup and diagram of their circuit and real physical ...
0
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4answers
150 views

How does energy dissipates in a purely reactive circuit?

Suppose in a home, power factor drops to zero. It means that the circuit becomes purely inductive. If the energy meter is connected at incoming power supply point,will the energy meter still keep on ...
0
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1answer
51 views

Solar Module Voltage when bypass diode activate?

What happen to the voltage level when a solar module is shaded and one of its bypass diode is activated? Assuming this solar module has 3 bypass diodes. I have been reading and can't seem to ...
0
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1answer
43 views

How to prevent circuit from shutting down when motor drain too much power

I have a device which has motor and circuits with PLC. This device is connected to a 12v battery which is powering the PLC and motor. Everything is working fine but when the motor's load is heavy, it ...
0
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1answer
39 views

Noise in transmission system

Does external noise (not electrical noise) affect system voltage? If so how does a source of sound energy distort a voltage waveform? https://youtu.be/4TCnYYpZxEc What exactly is happening in this ...
2
votes
1answer
442 views

Will resistance of wire increase with age due to some effects?

Today I had an electrical problem at my home not yet resolved. I will explain the problem. The switch for water motor and switch for lamp are nearby in same board. When I turn ON the lamp switch, the ...
0
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1answer
64 views

Oscillator connection

I have two questions here for how to connect the oscillator to a microcontroller (SPC584b): How can I determine the values of the capacitors? What is the need of SB2 & SB3?
1
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2answers
516 views

Can we use the Halbach array configuration in an electromagnet?

I tried asking this question in several forums but didn't find any answers as i expected. It's very hard to find information about halbach array in google, especially in the electromagnetic field. We ...
1
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0answers
111 views

Can a circuit have capacitors in both series and parallel?

From my understanding, two capacitors (or any electrical elements) are in series if the same current goes through them. Two capacitors are in parallel if they are connected to the same wires on both ...
0
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2answers
96 views

Does ideal Transformer transfer DC input voltage to secondary side, under NO-Load and Loaded condition?

Does ideal Transformer transfer DC input voltage to the secondary side, under NO-Load and Loaded condition? please you take DC input for a long time. Also consider two more conditions, 1st: for ...
1
vote
3answers
117 views

Is the electric current delayed

simulate this circuit – Schematic created using CircuitLab -Suppose that the distance between "D1" and "D2" is too large. -Does "D2" give a delayed response compared to "D1"?
2
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0answers
67 views

What is the off-white powdery material found at the base of GU5.3 light bulbs?

I've noticed most GU5.3 light bulbs, both halogen and LED, contain a granular material at the base. There seems to be considerable variation in how much of this powder is present, even within the same ...
0
votes
1answer
76 views

Flash in MCCB when switched off

Recently I switched off several molded case circuit breaker (MCCB) and saw a flash at the back of the breaker for an instant. This happened to all the MCCB on-site (around 14). The MCCB are all rated ...
0
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2answers
68 views

Total Dissipated Power

Please help look into to the below question where total dissipated power is to be calculated. In the solution given in the text they have added the under root of the power and then squared the result. ...
3
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1answer
227 views

What symbol is this?

Does anyone know what this step between the two lines mean?
0
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2answers
168 views

Multiplication of average voltage and current?

Multiplication of \$V_{rms}\$ and \$I_{rms}\$ gives average power. What things we get if we multiply \$V_{avg}\$ and \$I_{avg}\$??
1
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1answer
64 views

Please help guide if my understanding is correct

Please help check if my understanding is correct for the above circuits. As per my understanding the Voc=4v, since we have opened the circuit and there is no current flow. If that was not the case we ...
0
votes
1answer
49 views

AC Load Detection with auxiliary power supply

Is it possible to detect a load in an a.c. circuit before switching the main power supply supply on? Perhaps by using an auxiliary circuit which has it's own power supply, like a multimeter?
1
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1answer
45 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 ...
2
votes
0answers
59 views

Get position along electric wire [closed]

Do you know the game called Buzzwire where the aim is to guide the grip mounted loop through the wire maze without touching the loop against the metal maze all the way to the end? is it possible to ...
-1
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1answer
74 views

Circuit with resistor, diodes

I just started to learn electronic circuit. But it's a bit hard to understand this question and there is no explanation on the book. The answer is 4mA / +1V.
0
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1answer
42 views

Does magnetic flux depend on the orientation of the ferromagnetic rotor?

I have attached a picture of a reluctance motor setup. When I turn on the AC source, magnetic flux lines will build up. My question is, will the magnetic flux will be a function of the angle turned ...
0
votes
1answer
256 views

How to build a programmable LED strip? [closed]

I'm trying to build a home-made LED strip (non-RGB). It will be using single color SMD chips in array. The thought I have right now is to have 3 rows, each with about 15 or 25 same single color LEDs, ...
0
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1answer
3k views

3 phase heater to Single phase

I have this big immersion heater which my friend gave this to me. He said that this is originally design to be a 230V 9kW 3ph immersion heater (star). I am planning to convert this to single phase. ...
0
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1answer
49 views

Are these valid transformations, Please guide

Please help check if the transformations in the pink are allowed, when solving a circuit. For the given circuit the goal is to find the current I1 which could be found using nodal without taking care ...
0
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2answers
69 views

Voltage gradient in voltage difference across a resistor

If I have a voltage difference V from terminal 1 to terminal 2 of a resistor. I take an arbitrary point P along the resistor, between terminal 1 and terminal 2, and take terminal 1 as a voltage ...
0
votes
4answers
287 views

Why choose a PMOS over an NMOS or vice versa?

I know it sounds dum and that I sound dum but theres such a large amount of MOSFETs out there, there are N-channel and P channel devices that have extremely similar functionalities, capabilities, ...
0
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2answers
198 views

Is this an active or a passive circuit?

Is this an active or a passive circuit?
0
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2answers
44 views

Echo in voice to the caller while receiver with headphone hving wire replace [closed]

Hi I just replaced the old wire in my headphone with new one.But while using headphone the caller hears the voices with his own echo but while me having headphone on has no issue of echo can speaks ...
0
votes
1answer
68 views

Help finding voltage between two points

So, how should I proceed to find U_ab (or V_ab)? I have found I = -0.5mA, U_1=-2.5V, U_2 = -0.5V, U_3 = 2.0V. How would I even find U_a and U_b separately so I can apply U_ab = U_a - U_b? Also, ...
-3
votes
1answer
136 views

Please help reduce the following circuit to an equivalent circuit with single resistor and source

Please help reduce the following circuit to an equivalent form as I am unable to understand the given solution in the book. If required I will share the solution later. Thanks in advance. @jonk, @...
0
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1answer
83 views

Earth Leakage current understanding

In our design used TRIAC to control the load, As per the product field test setup i should short the neutral and earth connect together also the digital GND is connected with chassis. The input AC ...
0
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2answers
135 views

PCB trace width

I am trying to design a PCB circuit in altium designer. My circuit consists of one ATmega8a, one NRF24l01 and three magnetic relays (mini relay 12V MPR-S-112-A.) I want to set the trace width to 0....
1
vote
0answers
35 views

LCD Dimmer with Variable Resistance Circuit

essentially I'm trying to make a very basic circuit where a 3.7 volt battery is wired to a liquid crystal display, (or LCD), and the brightness of said display is controlled by a pentiometer to ...
0
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2answers
175 views

Is there a way to trade off amperage for voltage? [closed]

I was planning on buying a motorcycle battery or some other large battery to charge my laptop, but most of the batteries I found are 12v or lower, and I need around 20v to charge my laptop. Is there a ...
0
votes
1answer
67 views

Flyback Converter Transformer Leakage Inductance

We are in the process of designing an inverter , in which designing a step up flyback converter is crucial. The problem, we initially faced was there were more step down transformers available than ...
0
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3answers
84 views

What happens when we connect battery to a circuit?

Example setup: I have a piece if metal and I have 12v battery. When battery is connected to the metal current flows through the metal. So, my question is, does electrons from battery move through ...
1
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1answer
109 views

Isolation transformer Confusion

I’m hoping someone can clear up some confusion.I understand how an earth reference transformer works and how if there was an earth fault there would be a large rush of current through ground and back ...
0
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1answer
170 views

How to Measure differential conductance dI/dV experimentally?

Numerical derivation of IV curve is always a possibility to deduce dI/dV graph. How to measure it directly in voltage bias mode? What concept is required for it? What instrument are required to ...
0
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3answers
128 views

Wind turbine charger controller

I need help on my design which includes a wind turbine, charge controller, battery and load. The question is, what will happen to the load if the wind turbine is charging the battery and while it is ...
0
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2answers
38 views

Looking for Connection Ideas for 12V Battery Pack

I'm working on a project that's requiring the use of a battery pack made from 18650s. 3 of them in series connected to a BMS. It's a 12V supply that is housed in a 3D printed part, length wise of the ...
0
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2answers
74 views

Why we see a spark when we connect a plug into an already switched “ON” socket?

Why we see a spark when we connect a plug into an already switched "ON" socket? But I've also noticed that this isn't the case always, ie. sometimes when connecting a plug into a socket which is ...
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

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