Questions tagged [electrical]
The electrical tag has no usage guidance.
372
questions
0
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1answer
57 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
votes
1answer
43 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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1answer
60 views
First design with EEPROM
I want to get an idea of how to use a chip, code it and burn it.
So an and gate could be a good choice.
I've thought about using AT27C01024-70PU or AT89LP4052-20PU.
Got this burner in mind: https://...
0
votes
4answers
75 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
votes
1answer
38 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
37 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
votes
1answer
37 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
135 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
votes
1answer
57 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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0answers
54 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
vote
0answers
76 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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0answers
35 views
Superposition analysis with VCCS
I have just started doing electrical engineering course in the university. And I really don't understand how to treat those dependent sources when doing the superposition analysis of the circuit. Here ...
0
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0answers
61 views
Thyristors problem in a 1800v capacitor discharge system
I have two thyristors “R1275nc21x, they are Westcode thyristor and have some issues in my application.
I want to make a capacitor draining system with 1800V charged and it can discharge to the coil (...
0
votes
2answers
53 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 ...
0
votes
1answer
68 views
whats voltage drop on 40 yards of ws2815 leds
We are working on a project of using ws2815 led strips and our concern is how to handle the voltage drop?
1
vote
3answers
103 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
votes
0answers
66 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 ...
0
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0answers
26 views
Assistance with getting VM3558T motor running
Good afternoon,
I've spent quite a while trying to figure out this problem but this field is not my expertise. I'm trying to build an ABS plastic shredding machine for recycling - I've got ...
0
votes
1answer
54 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
47 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
161 views
0
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0answers
41 views
Difference between magnetizing inductance and primary inductance
What is difference between magnetising inductance(Lm) and primary inductance(Lp) of transformer?
0
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2answers
121 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
vote
1answer
61 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
27 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
vote
1answer
38 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
50 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
votes
1answer
70 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
votes
1answer
26 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
91 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
votes
1answer
633 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
votes
1answer
48 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
votes
2answers
56 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
99 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
145 views
0
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2answers
42 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
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1answer
51 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
72 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
votes
1answer
59 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
votes
2answers
118 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
33 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
votes
2answers
115 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
46 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
votes
3answers
79 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 ...
0
votes
1answer
88 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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0answers
46 views
How to develop Differential Conductance dI/dV measurement setup?
I have a Lock-in as sinusoidal Voltage source, DC Current source and Multimeter.
Can you please help me to develop a functional setup for dI/dV measurements.
How can I design the circuit?
What ...
0
votes
1answer
84 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
votes
3answers
102 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
votes
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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1answer
42 views
SPI pins logic level issue [closed]
I have ESP32 and the popular dot matrix module MAX7219 8*8 module to interface. It is connected through SPI pins. After a sample word printing on the maxtix it shows garbage outputs. Is it happening ...
