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"non-inductive" 10W resistors *PIC*

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  • "non-inductive" 10W resistors *PIC*



    Provided Link: Non inductive?

  • #2
    Curt's Speaker Design Works

    "It is the mark of an educated mind to be able to entertain a thought without accepting it."
    - Aristotle

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    • #3
      R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
      Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

      95% of Climate Models Agree: The Observations Must be Wrong
      "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

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      • #4
        Curt: These?


        Curt,
        Are these the ones you're talking about?
        <A HREF="http://www.mouser.com/catalog/specsheets/XC-600041.pdf">http://www.mouser.com/catalog/specsheets/XC-600041.pdf

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        • #5
          "non-inductive" 10W resistors *PIC*



          Provided Link: Non inductive?


          > Dave, you are looking more foolish with each
          > of these posts.

          > The fact that there are LEADS on the
          > resistor mean they have inductance. There is
          > NO SUCH THING as a non-inductive resistor by
          > your stupid definition.

          I am not trying to reach the most extreme examples of idiots like you with this information. You should know that coiling wire is the way to create inductance. The inductance of straight wire is truly miniscule, especially a short length, but of any coil is not, even a short one.

          There *is* such as thing as a non-inductive wirewound resistor (within reason). The way to make one is to use two parallel windings with opposite current flow. The fields will mostly cancel.

          > Please, get over yourself and move on.

          Nice. Really nice. Read some books, okay? This stuff is basic.

          Comment


          • #6
            Re: Pete....Do not feed the trolls please...(nm) *NM*



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            • #7
              Need funding to develope Mobius N.I. resistor! *NM*



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              • #8
                Re: "non-inductive" 10W resistors


                > I am not trying to reach the most extreme
                > examples of idiots like you with this
                > information. You should know that coiling
                > wire is the way to create inductance. The
                > inductance of straight wire is truly
                > miniscule, especially a short length, but of
                > any coil is not, even a short one.

                > There *is* such as thing as a non-inductive
                > wirewound resistor (within reason). The way
                > to make one is to use two parallel windings
                > with opposite current flow. The fields will
                > mostly cancel.

                > Nice. Really nice. Read some books, okay?
                > This stuff is basic.

                I was designing high frequency switching power supplies and Class-D servo controllers while you were probably sucking your thumb and soiling your diapers.

                Non-inductive resistors, wound the way you describe, still have residual inductance on par with what folks have MEASURED from these supposedly suspect resistors as opposed to what you THINK that they may have as an inductance.

                You seem like a guy, who when presented with a red ball, would argue that the light frequency presented to your eye is not technically red, but more crimson than rose.

                Why can't you take what others have posted as MINISCULE microhenries of measured residual inductance and let it go? Holy crap dood, lighten up and move on. The resistors, for all audio purposes, are non-inductive.
                R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
                Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

                95% of Climate Models Agree: The Observations Must be Wrong
                "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

                Comment


                • #9
                  "non-inductive" 10W resistors *PIC*



                  Provided Link: Non inductive?

                  Comment


                  • #10
                    Maybe "low-inductive" is better.


                    Interesting. Both appear to be simple coils and assuming there is nothing else to be seen in the pic, they both are inductors with the value of inductance being a function of the geometry of the winding. But, the inductance would seem to be very small because of the way the wire is coiled with a small number of turns in the crossection.

                    Here's an example of one guy's real non-inductive design:

                    <A HREF="http://www.rexresearch.com/davis/davis.htm">http://www.rexresearch.com/davis/davis.htm</A>

                    Dave

                    Comment


                    • #11
                      "non-inductive" 10W resistors *PIC*



                      Provided Link: Non inductive?


                      > I was designing high frequency switching
                      > power supplies and Class-D servo controllers
                      > while you were probably sucking your thumb
                      > and soiling your diapers.

                      Wow, way ahead of your time, I'd say. Didn't know that was being done with vacuum tubes. I am so impressed with your extreme age and general superiority, oh groundbreaking elderly PWM digital dude. So why are you even commenting on analog issues at all? Hey, even so, then your experience says you know that 20 uH is not insignificant at 20 kHz. So why not shut that toothless old trap, right about now?

                      > Non-inductive resistors, wound the way you
                      > describe, still have residual inductance on
                      > par with what folks have MEASURED from these
                      > supposedly suspect resistors as opposed to
                      > what you THINK that they may have as an
                      > inductance.

                      > You seem like a guy, who when presented with
                      > a red ball, would argue that the light
                      > frequency presented to your eye is not
                      > technically red, but more crimson than rose.

                      Okay, I do now think you are probably more obnoxious and gratuitously argumentative than stupid.

                      > Why can't you take what others have posted
                      > as MINISCULE microhenries of measured
                      > residual inductance and let it go? Holy crap
                      > dood, lighten up and move on. The resistors,
                      > for all audio purposes, are non-inductive.

                      Since when do 80 year old people say dood?

                      Comment


                      • #12
                        "non-inductive" 10W resistors *PIC*



                        Provided Link: Non inductive?


                        You suggest that being helpful by revealing a ruse is troll behavior? What an a-hole.

                        Comment


                        • #13
                          Re: "non-inductive" 10W resistors


                          > Wow, way ahead of your time, I'd say. Didn't
                          > know that was being done with vacuum tubes.

                          You are such a troll.

                          I was designing with MOSFETs back in the early '80s dufus. 1MHz switching speeds. Straight A's in my EE courses that included digital filters, control systems, high frequency amplifier design. You're not dealing with your moron friends here.

                          > I am so impressed with your extreme age and
                          > general superiority, oh groundbreaking
                          > elderly PWM digital dude. So why are you
                          > even commenting on analog issues at all?
                          > Hey, even so, then your experience says you
                          > know that 20 uH is not insignificant at 20
                          > kHz. So why not shut that toothless old
                          > trap, right about now?

                          I know more about analog electronics design than you'll ever hope to fathom Mr. Thumbsucker Poopypants. The fact that you cannot measure what you say should be there tells it all. In spite of the facts presented by others, you still whine about something you have not measured to verify your assumptions. That's not surprising considering how long you've pressed this idiotic issue.

                          > Okay, I do now think you are probably more
                          > obnoxious and gratuitously argumentative
                          > than stupid.

                          You're the expert of gratuitous arguementation.

                          > Since when do 80 year old people say dood?

                          Sure hope I make it to 80 someday.

                          Now a question for you.

                          Since when do people still soiling their diapers claim wisdom?

                          R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
                          Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

                          95% of Climate Models Agree: The Observations Must be Wrong
                          "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

                          Comment


                          • #14
                            "non-inductive" 10W resistors *PIC*



                            Provided Link: Non inductive?


                            > Interesting. Both appear to be simple coils
                            > and assuming there is nothing else to be
                            > seen in the pic, they both are inductors
                            > with the value of inductance being a
                            > function of the geometry of the winding.
                            > But, the inductance would seem to be very
                            > small because of the way the wire is coiled
                            > with a small number of turns in the
                            > crossection.

                            It is small, but not negligible at the upper end of the audio band. BTW, using a small diameter core and stretching the length of the coil out also helps, but they are all made this way.

                            > Here's an example of one guy's real
                            > non-inductive design:

                            > <A HREF="http://www.rexresearch.com/davis/davis.htm">http://www.rexresearch.com/davis/davis.htm</A>
                            > Dave

                            Thank you for lightening this up. That may be the way to go as far as possible, but small amounts of inductance are okay at audio.

                            Regarding the "low-inductive" moniker, there is no more inductive configuration for a resistor than a coil of wire. A carbon composition or solid oxide resistor might be considered essentially non-inductive. For those operating at RF, one might then call them low-inductive, but that would be flogging the obvious, because those who care will already know all about it.

                            Comment


                            • #15
                              Re: "non-inductive" 10W resistors


                              > You suggest that being helpful by revealing
                              > a ruse is troll behavior? What an a-hole.

                              Helpful? Is that what you call what you're doing? Revealing a ruse? Thanks Sherlock.

                              Now, tell us, please, what EXACTLY is the inductance value of that 4 Ohm wirewound resistor that has your diapers in a wad? I don't want your opinion of what you think it is, I want to know what value you measure and how you measured it.

                              Until then, shut up.
                              R = h/(2*pi*m*c) and don't you forget it! || Periodic Table as redrawn by Marshall Freerks and Ignatius Schumacher || King Crimson Radio
                              Byzantium Project & Build Thread || MiniByzy Build Thread || 3 x Peerless 850439 HDS 3-way || 8" 2-way - RS28A/B&C8BG51

                              95% of Climate Models Agree: The Observations Must be Wrong
                              "Gravitational systems are the ashes of prior electrical systems.". - Hannes Alfven, Nobel Laureate, Plasma physicist.

                              Comment

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