Recent content by David Kimbley

  1. David Kimbley

    How to best simply invert a 110v ac current w/minimum change to the voltage

    Hey again AK, As I understand it, the 110 is inverted at the transformer, so the invert and add will give you the noise acquired from the transformer to the house receptical, ... and the noise is all I am looking for. (I know, it seems strange to just look for noise on an ac line). So...
  2. David Kimbley

    How to best simply invert a 110v ac current w/minimum change to the voltage

    Hey AK, thanks for your reply. Normally, the idea of the "balanced signal" is to keep the signal, and elimiate the noise. I was hoping to do the opposite,.. keep the noise, and eliminate the signal (110v ac signal). So it would essentially be a way to measure the "noise" on an ac line...
  3. David Kimbley

    How to best simply invert a 110v ac current w/minimum change to the voltage

    Sorry, I will try to be more descriptive about what I'm wanting to do. What I need is to invert 1 leg of 110v house current (60 hz) so that it will match exactly the other side of the 110v house current. How is this done? And if it is done, how closely will it match the other leg? I'm...
  4. David Kimbley

    How to best simply invert a 110v ac current w/minimum change to the voltage

    Hey All, Thanks for all the replies... Yes, I was vague. It's for a project very similar to the "Balanced signals" which eliminates the noise from a signal by (as I understand it) 1) inverting the signal, 2) transfering the original signal along with the inverted signal, 3) re-inverting the...
  5. David Kimbley

    How to best simply invert a 110v ac current w/minimum change to the voltage

    Hi Electronics Gurus, I am working on a project which needs to have a 110v ac current simply inverted with as little effect to the current as possible. (and keep it a 110v ac wave. (just inverted). Any ideas? David K
  6. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Hop, Thanks for your in-depth consideration and interest. The distortion "Sidebands" I hadn't considered. You are right, these would probably need to be filtered out. I see what you mean. First, let me correct my last post, I incorrectly said "Bob's digital approach", but It was...
  7. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    OK guys, Sorry if I am still unclear, but again Bob, you are spot on with your "Another possibility..." Yes, to obtain just the glitches from the normal distorted sine wave (of course, any household current is going to be somewhat distorted, and that is exactly why I cant use an ideal...
  8. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Adam, I actually dont really want to filter out any of the noise--probably not common of a goal. I only want to preserve the "non-average" (noise), and to record it temporarily. The initial "averaging" is only done to identify the "non-average" fluxuations. So, two questions, 1) would...
  9. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Hevans, I do see what you're suggesting, and eventually I did want it to go digital, but I was hoping this first part could also be done in analog. For instance, I'm not real particular about the time period the "averaging" is over.. anything 5-10 secs would be fine. And does not a...
  10. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi again all, Wow, thanks for all the interest, and for all your considerations. And yes Bob, you have correctly explained my initial question. And Hevans, thank you,... a LOT of good info there I'm sure, but I am disappointed to hear it is not as simple as I'd hoped.. I'm really trying...
  11. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi again, Ok, you mentioned a rectifier. But then wouldn't that change it to a DC voltage? I want to keep it AC.
  12. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Adam, Ok, an "Integrator". Is "an Integrator" a well known term for an electronic circuit which will do what I've described? Can a person buy an "integrator" in the local electronics store, or does it have to be built with "A simple diode and RC network". And just to be clear RC means...
  13. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Again Adam, Glad I did not make you mad. But does not the positive alternating voltage potential pretty much equal the negative voltage potential such that when added they are pretty close to zero? But this question of what the average voltage is, is sort of beside my question. How can...
  14. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    David here again... I also realize my 2nd part is not very clear. It probably should be polar reversed rather than phase shifted.
  15. David Kimbley

    AC circuit (120v single phase) smooth to a10 sec. average voltage sine wave

    Hi Adam, Sorry, after I thought about it, I realized this is not clear. Ok, in this case, by "average" I mean: you take 600 cycles say (10 seconds) add them together, and divide it 600. So that every instant of voltage is like a "smoothed" sine-wave minimizing any irregular spikes/drops...
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