All Questions
Tagged with energy transformer
13
questions
2
votes
1
answer
105
views
Meaning of this power system line diagram symbol
Please explain to me what this symbol means, in single line diagram?
Source of image: My project diagram.
Here is another example I found:
Here is a magnified part, showing the symbol:
Source of ...
6
votes
2
answers
427
views
"To Gap, or Not to Gap" Inductor/XFMR - Energy POV
This post/question is coming from a question I asked within the comments section of here:
How to calculate air gap in flyback transformer?
The great answer given talks about his solution to the ...
- 180
4
votes
3
answers
1k
views
Understanding the flux linkage in transformers
I am having difficulty understanding the concept of flux linkage in transformers, particularly how the secondary winding receives its flux when all the flux is said to be confined to the iron core. I ...
- 43
3
votes
1
answer
677
views
Proper burden resistor CT clamp
I'm trying to figure out what the proper burden resistor I should use, but the information I'm reading from OpenEnergyMonitor answer for the proper resistor values doesn't match what I was expecting.
...
- 31
1
vote
3
answers
91
views
Can V²/R be used to find energy of a DC transformer pulse?
A person I am working with is trying to determine the efficiency of a pulse transformer and I am confused by the procedure.
We know the input energy because a capacitor is discharged across the ...
-4
votes
5
answers
252
views
Doesn't the law of conservation of energy invalidate Ohm's law?
Imagine I have a power supply supplying a 12 amp AC current of 12 volts. The resistance of the circuit, consisting of only a copper wire and a resistor, is 1 ohm.
In this instance Ohm's law holds true:...
0
votes
1
answer
390
views
Magnetic energy harvesting with a current transformer
I am planning to design a magnetic energy harvesting circuit with a current transformer (CR8349-1500) to charge a super capacitor.
Load current rating is 0 to 35 amperes. From the current transformer ...
- 87
0
votes
1
answer
111
views
Power and current contradictions in transformer secondary
Two contradictions that I couldn't find a solution for regarding a transformer:
For an ideal transformer, from conservation of energy we can say that:
V1 * I1 = V2 * I2
Where V1, I1 are the primary ...
- 95
0
votes
1
answer
58
views
Does the size of switch-mode adapters affect their efficiency?
I know that a rule of thumb to judge the efficiency of a traditional iron core transformer is to look at its size: the larger it is, the higher the number of windings, the larger the core, the ticker ...
- 3
1
vote
2
answers
1k
views
In an ideal transformer circuit, how is power transferred?
If I have a system of circuits like this:
where Circuit 2 is providing power the Circuit 1, where does the energy come from? Do the inductors store energy? If not, how is power transferred from the ...
- 159
0
votes
2
answers
161
views
Transformer drawing 29x more current than it needs
I have an old transformer (20+ yrs) in a building I manage (GE Model 9T23B3872), it takes 277V 3-phase and converts it to 120V 3-phase. It seems very wasteful. It is drawing a combined 8.7 A @ 277 V ...
4
votes
2
answers
4k
views
How do I design a current transformer?
I want to make a Current transformer using toroidal ferrites to measure 220/50-60Hz AC current(40A max). Is it possible? And how can I calculate secondary turns count?
Ferrite properties:
H = 2000, ...
- 165
0
votes
1
answer
162
views
How does the principle of conservation of energy for a phase-shifter transformer apply?
Since the phase shifter transformer is used for regulating the real power in the transmission line by means of changing the angle
it leads to the fact that the real power at
the secondary side ...
- 1