Pairs of resistors in opposite directions
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 8th January 2013, 07:38 PM #21 cyclecamper   diyAudio Member   Join Date: May 2010 Location: Chicago IL, Long Beach CA, Vienna VA There is a small reduction of coupling inductance and capacitance by winding in sections. Using two in series is like winding in sections.
 8th January 2013, 10:45 PM #22 DF96   diyAudio Member   Join Date: May 2007 Two resistors in series will have exactly the sum of their resistances and approximately the sum of their inductances. This may be smaller or larger than the inductance of one resistor of the total value, but larger is perhaps more likely.
 8th January 2013, 10:45 PM #23 Mikha   diyAudio Member   Join Date: Mar 2011 Location: Moscow Noise. Parallel connection of resistors to reduce noise, the value of which depends on the current.
 9th January 2013, 12:00 AM #24 SY   On Hiatus     Join Date: Oct 2002 Location: Chicagoland Johnson noise is the same, it just depends on the resistance. Ditto excess noise, it only depends on the applied voltage which is the same for any parallel combination. And, of course, it's pretty much meaningless at these voltage levels. If one wants to reduce it to zero, a wirewound resistor is the best choice. Good review: https://dcc.ligo.org/public/0002/T09...rent_noise.pdf __________________ "You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is."
 9th January 2013, 12:37 AM #25 Sch3mat1c   diyAudio Member     Join Date: Jan 2003 Location: Milwaukee, WI In short: carbon comp aside, there is damn little you can argue against modern resistors. That anything obeys Ohm's Rule (it should hardly be called a law, most things don't obey it!) at all is quite remarkable, and that resistors do, so well, so precisely and over so many orders of magnitude in voltage, current and frequency, is probably unmatched in electrical engineering, and perhaps in all other engineering disciplines as well. (Well, okay, perhaps astrophysics has us beat with something like the mass of a planet in orbit -- that could be a pretty pure gravitational tone in the nanohertz, and just imagine how little Johnson noise a 10^24 kg "capacitor" will have, even at that frequency! But then, I specified _engineering_, and I don't see no astronomers pulling planets into new orbits, do you? ) Tim __________________ Seven Transistor Labs, LLC Projects and Resources / Electronic Design and Consultation
 9th January 2013, 03:36 AM #26 Mikha   diyAudio Member   Join Date: Mar 2011 Location: Moscow In most cases when you see a proud inscription "Hi End," you have to forget about engineering...
 9th January 2013, 10:15 AM #27 Robert Kesh   diyAudio Member     Join Date: Oct 2012 You guys should just do this Just make sure you have reversed the helix's orientation to the resistor's.
 9th January 2013, 10:36 AM #28 Zen Mod   Official Court Jester diyAudio Member     Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain I can see vendors , selling Beyschlag's - sorted to left and right ones "... combine them in parallel , as seen on TV! " __________________ my Papa is smarter than your Nelson ! clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM
 9th January 2013, 11:26 AM #29 DF96   diyAudio Member   Join Date: May 2007 At least the EM field conserves parity, so a left-hand wind and a right-hand wind are the same apart from polarity. If we had to do electronics using the weak interaction it would be much more fun, as that violates parity!
 9th January 2013, 11:31 AM #30 Zen Mod   Official Court Jester diyAudio Member     Join Date: Jan 2003 Location: ancient Batsch , behind Iron Curtain if you place them around xtall , then they're really useful __________________ my Papa is smarter than your Nelson ! clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...© by Mighty ZM

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