Search:

Type: Posts; User: Swend

Page 1 of 10 1 2 3 4

Search: Search took 0.01 seconds.

  1. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Well, that trick I didn't know, so thank you for that.

    Then it's only fitting that I amend my statement to "it's [this post] generating VERY LITTLE of value"
  2. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    So you are stating a personal opinion, and because of that opinion it's clear to you that measurements are wrong and therefore you can't be bothered to look at the facts even for all the money in the...
  3. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Yes, but in this data series, the current is never zero, otherwise the calculating script throws a divide by zero warning, which it doesn't in this case. - so no zeros.



    As I have said several...
  4. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Yes that's how it's calculated.



    Yes, I agree in the case of singular points, but 6.7e10 as in the plot is still finite.



    And what if both U(t) AND I(t), as the case is here, are not...
  5. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    As a service for the persons reading this post, I made the following calculations:

    I took the first full pulse from the data file (SDS00001.CSV attached in previous thread) and it looks like this...
  6. Closed: Re: Energy doesn't FLOW the way you THINK! (Electrodynamics)

    I agree the mathematics is definitely not trivial, that's why it even more impressive that Nick Lucid (the video channel owner) still manages to covey the essence of such complex math only by the use...
  7. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    I had to make a new measurement to record the full pulse and a bit more. The only change I have made is the nominal value of "R" I lowered it from 1.1M to 883K which resulted in higher voltage and...
  8. Closed: Energy doesn't FLOW the way you THINK! (Electrodynamics)

    Hi friends

    It seems to me that fundamental electric theory is no longer taught in school, which is a shame as it results in everyone having their own intuition and interpretation about it, leading...
  9. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    I don't appreciate your irony. Where do you find excess energy? The negative current goes back to the source's power supply, the power supply performs work (Work as in W = F * d * cosθ) on it at a...
  10. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    In stead of expressing your personal distrust maybe you should start by posing me a question. Obviously the traces don't start "out of nothing" I just chose to start at that particular point when...
  11. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    I would say at least one, but I am willing to entertain the possibility of two.



    I vote in favor of that suggestion, I already spent $1.000 on the CT, if the CT is yielding incorrect results I...
  12. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Hi Klaus



    The simple and only reason I talk about R as an ohmic load is:
    156367



    I did not say it behaved like an ohmic load, because according to the measurements it definitely doesn't,...
  13. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Hi Klaus.

    First let me make my intentions very clear:

    What I have recorded is NOT the desired result, so I need to establish a baseline to move away from the current result. I need...
  14. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Re: Ohm's Law and Power calculation problem

    Hi Klaus

    First I made a typo, I mixed the UI value up with IIR value, here are the corrected values.

    (UI) P = -3.731 W
    (UUR) P = 25W
    (IIR) P = 809.471 W
  15. Replies
    30
    Views
    1,653

    [SOLVED]Closed: Ohm's Law and Power calculation problem

    Hi friends,

    I understand there are three ways of calculating power

    (UI) P = U * I
    (UUR) P = U² / R
    (IIR) P = I² * R

    When I measure voltage, current and resistance in my circuit,...
  16. Replies
    7
    Views
    462

    [SOLVED]Closed: Re: Transformer: current loss

    Not luck, but fingerspitzengefühl and rubber tape ;-)

    - - - Updated - - -



    The left one aka "sucky-I" is the air-cored one. I measured the "inductance" of the primary (with the secondary...
  17. Replies
    7
    Views
    462

    [SOLVED]Closed: Re: Transformer: current loss

    Klaus, I didn't say that I expected same power with same current. I said the voltage is stepped down by a factor of 10, but the current stays the same i.e. there is a ten fold power loss which...
  18. Replies
    7
    Views
    462

    [SOLVED]Closed: Transformer: current loss

    Hi friends.

    I have now two transformers which both suɔʞ at what they do, so I have named the left as "sucky-I" and the right as "sucky-II" (the black tape is self-vulcanizing rubber, excellent at...
  19. Replies
    6
    Views
    539

    Closed: Re: Determine Transformer Loss

    I think I just have come up with a extremely bad design that is extremely lossy.



    Thank you, And how about the way I calculate power i.e. can I calculate average power by summing the...
  20. Replies
    6
    Views
    539

    Closed: Re: Determine Transformer Loss

    Hi arajur



    Here is a picture of one. I use one to measure primary voltage and a second one to measure secondary voltage.
    155132



    This is exactly my point, it must be very inefficient,...
  21. Replies
    6
    Views
    539

    Closed: Re: Determine Transformer Loss

    OK, I will try to rephrase my question.

    Accorcing to electronics-tutorials.ws in a ordinary power-transformer with sine AC, the efficiency is
    155109

    And the power is calculated like this...
  22. Replies
    6
    Views
    539

    Closed: Determine Transformer Loss

    Hi friends.

    I would like to know the loss (power/energy) in a air-core pulse transformer of my own fabrication.

    What we are looking at is this:
    155096

    I'm measuring voltage with two...
  23. Replies
    26
    Views
    1,388

    Closed: Re: Bridge Rectifier won't Rectify

    Yes that's what I did, but I wrote the opposite., sorry. And now I changed caps because the 1n blew up it was only 3KV. So I found some old USSR caps of 22p 12KV put those across the 100M, and a...
  24. Replies
    26
    Views
    1,388

    Closed: Re: Bridge Rectifier won't Rectify

    So I made a 100:1 with 100M+100n/1M+1n and it also works. I was actually using 100:1 until this voltage rise thing threw me off in the wrong direction. The top resistor is made of glass and the...
  25. Replies
    26
    Views
    1,388

    Closed: Re: Bridge Rectifier won't Rectify

    Well, I tried adding capacitance (ranging from 33p to 2.2n) across the 100M, and what I saw on the scope was that the full 6Vp-p from the signal generator appeared across the lower 100K resistor,...
Results 1 to 25 of 236
Page 1 of 10 1 2 3 4