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#1
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Basic magnetic phenomena explained
Hi all,
Hardly anyone understands magnetism. For those inclined to read more, you could do well to read up at http://www.ndt-ed.org/EducationResou.../Magnetism.htm There is application of ideas to MPI, magnetic particle inspection of many things to detect cracks or metal faults. But basics about magnetics is well explained along with units used. Patrick Turner. |
#2
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Basic magnetic phenomena explained
"Patrick Turner" Hardly anyone understands magnetism. ** An invention of the devil for sure .... For those inclined to read more, you could do well to read up at http://www.ndt-ed.org/EducationResou.../Magnetism.htm There is application of ideas to MPI, magnetic particle inspection of many things to detect cracks or metal faults. But basics about magnetics is well explained along with units used. ** The various Wikis on magnetism and electromagnetism are rather more informative and have better diagrams. http://en.wikipedia.org/wiki/Magnetism The first dude to ever wind some copper wire around an iron nail was really onto something.... ..... Phil |
#3
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Basic magnetic phenomena explained
On Jul 9, 1:27*pm, "Phil Allison" wrote:
"Patrick Turner" Hardly anyone understands magnetism. ** An invention of the devil for sure .... For those inclined to read more, you could do well to read up at http://www.ndt-ed.org/EducationResou...ge/MagParticle... There is application of ideas to MPI, magnetic particle inspection of many things to detect cracks or metal faults. But basics about magnetics is well explained along with units used. ** The various Wikis on magnetism and electromagnetism are rather more informative and have better diagrams. http://en.wikipedia.org/wiki/Magnetism The first dude to ever wind some copper wire around an iron nail was really onto something.... Maybe that first dude needed to to know a bit about several things before realizing he was onto anything. Just winding wire around a nail is a fencing job, or cheap DIY repair. But if the FD had insulated wire, and a battery, he'd have been a scientific dude because when he lived, nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. But that's another separate issue apart from mainstram dudes, MDs, of 1825 who were mainly exceedingly dumb brootes, Dbs.) Hardly anyone had any wire, let alone copper wire, and nails were mainly with a square shank, also very expensive, so the FD achieved a first wire wrap connection without knowing why. I reckon RDH4 isn't too bad on the basics about F, B and H, but then they have R, reluctance, and a load line for the iron and air gap and NOBODY knows how to interpret that. So all a man can do is plonk a few turns around a core, measure current and voltage, view all stuff on CRO, and conclude what hysteresis must be occurring and what it means in PRACTICAL terms rather than in scientific lingo which sounds worse than Julia & Tony on just about anything. Then wennya stick in a gap, you see the changes in current, and again wennya add DC flow as well. There's SFA anywhere on the Net were all such observations are made and shown because the Internet is the Land of the Lazy where ppl babble re- gurgitated jargon at each other without ever having to make a good tranny or choke. I'm lucky I have a few other books besides RDH4. Anyway, I read web-pages of mine I wrote 6 years ago and methinks they needed more clarity so I re-visited the study of basics and will repost what I hope are better pages soon on choke designs. Over the years the formatting of pages gets very messy as well. Must be mice wandering around inside the data centres, nice and warm in there, voltages are not too high. RDH4 has a formula for relating Afe on a core to VA, A = sq.root VA / 5.58. Therefore VA = 31.13 x A squared, A in square inches. Interesting because in most old books which wrote about most old iron that existed when RDH4 was written in 1953 have A = sq.root VA / 4.44, so VA = 19.1 x A squared. There is rather a lot they don't mention about aspect ratios of T:S plus lots of other stuff. Many old power trannies were designed using the basic 4.44 constant, and had they been designed using 5.6 they'd have run far too hot. Patrick Turner. .... *Phil |
#4
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Basic magnetic phenomena explained
"Patrick Turneroid Menace" ** The various Wikis on magnetism and electromagnetism are rather more informative and have better diagrams. http://en.wikipedia.org/wiki/Magnetism The first dude to ever wind some copper wire around an iron nail was really onto something.... Maybe that first dude needed to to know a bit about several things before realizing he was onto anything. Just winding wire around a nail is a fencing job, or cheap DIY repair. But if the FD had insulated wire, and a battery, he'd have been a scientific dude ** Of course, you pedantic ****. Bill Sturgeon, an apprentice shoemaker from Lancashire did it first. http://en.wikipedia.org/wiki/William_Sturgeon He used bare copper wire, a bent piece of iron and a single cell. .... Phil |
#5
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Basic magnetic phenomena explained
Patrick Turner wrote:
nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. .... To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. Lord Valve Musician |
#6
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Basic magnetic phenomena explained
"Lord Valve" Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. ** Mozart pre-dated even the player piano by about 100 years. That said, his phenomenal popularity suggests that had iPods been available in 1780, young Wolfgang " tinkling the ivories" would been top of the pops with all the damsels of the day. Just like " boy bands " are now ... ..... Phil |
#7
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Basic magnetic phenomena explained
Phil Allison wrote:
"Lord Valve" Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. ** Mozart pre-dated even the player piano by about 100 years. That said, his phenomenal popularity suggests that had iPods been available in 1780, young Wolfgang " tinkling the ivories" would been top of the pops with all the damsels of the day. Just like " boy bands " are now ... .... Phil ..... They did, however, have "music box"-like instruments of several varieties, including plucked strings, tines, and even organs...but they were driven by metal drums with projections on them, and the music had to be hardware programmed by the dudes who built them. Not at all a recording, but a type of primitive mechanical reproduction. As far as damsels went, young Wolfgang was reputed to have been quite successful. Quite. ;-) Lord Valve Musician |
#8
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Basic magnetic phenomena explained
On Jul 10, 12:19*pm, "Phil Allison" wrote:
"Patrick Turneroid Menace" ** The various Wikis on magnetism and electromagnetism are rather more informative and have better diagrams. http://en.wikipedia.org/wiki/Magnetism The first dude to ever wind some copper wire around an iron nail was really onto something.... Maybe that first dude needed to to know a bit about several things before realizing he was onto anything. Just winding wire around a nail is a fencing job, or cheap DIY repair. But if the FD had insulated wire, and a battery, he'd have been a scientific dude ** Of course, you pedantic ****. Bill Sturgeon, an apprentice shoemaker from Lancashire did it first. http://en.wikipedia.org/wiki/William_Sturgeon He used bare copper wire, a bent piece of iron and a single cell. ... *Phil Phil, have you forgotten to take your meds lately? There's a special light blue pill that enables your sense of humerator to function. Of course, maybe you've been taking too many brown pills. Patrick Turner. |
#9
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Basic magnetic phenomena explained
On Jul 10, 11:17*pm, Lord Valve wrote:
Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. ... To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. Lord Valve Musician Well of course Jack **** wasn't ever going to get recorded. He had a terrible voice, and couldn't sing in tune like so many other dull bland and poor cousins and unkels in the Mozart family. Young "Moatzie" had influential friends who were geniuses like himself, so they did DIY electricity etc, etc, and they had a little recording studio with digital effects in the backroom of a wealthy idiot Prince of Vienna, with more dough than sense. But outside this little "in" grope, nobody ever found out that they were up to, so 30 years passed without anyone knowing anything much different, and mean while some Sturgeon fella was farnarkling around with primitive batteries, copper wire, and nails and stuff, doing it the hard way. After "Moatzie" karked it at 35, there were umpteen European wars and revolutions, and the palace where "little room of tricks" was burnt to the ground, and the dudes who did the early recording gear lost lives after joining armies because they wandered around paddocks so absentmindedly trying to think up a better computer. History is so unkind and unforgivable. Patrick Turner. |
#10
Posted to rec.audio.tubes
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Basic magnetic phenomena explained
On Jul 11, 1:09*am, Lord Valve wrote:
Phil Allison wrote: "Lord Valve" Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. ** Mozart pre-dated even the player piano by about 100 years. That said, his phenomenal popularity suggests that had iPods been available in 1780, young Wolfgang " tinkling the ivories" would been top of the pops with all the damsels of the day. Just like " boy bands " *are now ... .... *Phil .... They did, however, have "music box"-like instruments of several varieties, including plucked strings, tines, and even organs...but they were driven by metal drums with projections on them, and the music had to be hardware programmed by the dudes who built them. Not at all a recording, but a type of primitive mechanical reproduction. As far as damsels went, young Wolfgang was reputed to have been quite successful. Quite. *;-) Music is the way to dipping the pork sword, to be sure! I betcha you dunno what Motzart never ever heard a shiela say.... "Jus' you lie down 'ere luvvie, it ain't gonna costyer anyfink" Jagger probly knows he hasn't heard a shiela say that either. Patrick Turner. Lord Valve Musician- Hide quoted text - - Show quoted text - |
#11
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Basic magnetic phenomena explained
Patrick Turner wrote:
On Jul 10, 11:17 pm, Lord Valve wrote: Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. ... To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. Lord Valve Musician Well of course Jack **** wasn't ever going to get recorded. He had a terrible voice, and couldn't sing in tune like so many other dull bland and poor cousins and unkels in the Mozart family. Young "Moatzie" had influential friends who were geniuses like himself, so they did DIY electricity etc, etc, and they had a little recording studio with digital effects in the backroom of a wealthy idiot Prince of Vienna, with more dough than sense. But outside this little "in" grope, nobody ever found out that they were up to, so 30 years passed without anyone knowing anything much different, and mean while some Sturgeon fella was farnarkling around with primitive batteries, copper wire, and nails and stuff, doing it the hard way. After "Moatzie" karked it at 35, there were umpteen European wars and revolutions, and the palace where "little room of tricks" was burnt to the ground, and the dudes who did the early recording gear lost lives after joining armies because they wandered around paddocks so absentmindedly trying to think up a better computer. History is so unkind and unforgivable. Patrick Turner. You were just wrong. Shut up. |
#12
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Basic magnetic phenomena explained
On Jul 12, 12:29*am, Lord Valve wrote:
Patrick Turner wrote: On Jul 10, 11:17 pm, Lord Valve wrote: Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. ... To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. Lord Valve Musician Well of course Jack **** wasn't ever going to get recorded. He had a terrible voice, and couldn't sing in tune like so many other dull bland and poor cousins and unkels in the Mozart family. Young "Moatzie" had influential friends who were geniuses like himself, so they did DIY electricity etc, etc, and they had a little recording studio with digital effects in the backroom of a wealthy idiot Prince of Vienna, with more dough than sense. But outside this little "in" grope, nobody ever found out that they were up to, so 30 years passed without anyone knowing anything much different, and mean while some Sturgeon fella was farnarkling around with primitive batteries, copper wire, and nails and stuff, doing it the hard way. After "Moatzie" karked it at 35, there were umpteen European wars and revolutions, and the palace where "little room of tricks" was burnt to the ground, and the dudes who did the early recording gear lost lives after joining armies because they wandered around paddocks so absentmindedly trying to think up a better computer. History is so unkind and unforgivable. Patrick Turner. You were just wrong. Shut up.- Hide quoted text - - Show quoted text - I never intended to be serious about the matter. Let me know if ya feel any effects from the pale blue humerator pill. Perhaps they have zero effect on you, and you will forever remain a grumpy old curmudgeon. Beware the dark blue pill. That one gives you a hard-on for a weak, and a hard-on is a device invented, of course, by the Devil, and, in your hands, it would be a waste if nobody smiled while ya use it. Patrick Turner. |
#13
Posted to rec.audio.tubes
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Basic magnetic phenomena explained
Patrick Turner wrote:
On Jul 12, 12:29 am, Lord Valve wrote: Patrick Turner wrote: On Jul 10, 11:17 pm, Lord Valve wrote: Patrick Turner wrote: nobody had anything electrical, ( except for a few rich *******s in the royal court in Vienna where Mozart recorded his music. ... To my knowledge, Mozart never recorded jack **** - there was nothing to do it with in the late 1700s. If you mean by "recording" that he wrote it out on staff paper with a pen, sure. Lord Valve Musician Well of course Jack **** wasn't ever going to get recorded. He had a terrible voice, and couldn't sing in tune like so many other dull bland and poor cousins and unkels in the Mozart family. Young "Moatzie" had influential friends who were geniuses like himself, so they did DIY electricity etc, etc, and they had a little recording studio with digital effects in the backroom of a wealthy idiot Prince of Vienna, with more dough than sense. But outside this little "in" grope, nobody ever found out that they were up to, so 30 years passed without anyone knowing anything much different, and mean while some Sturgeon fella was farnarkling around with primitive batteries, copper wire, and nails and stuff, doing it the hard way. After "Moatzie" karked it at 35, there were umpteen European wars and revolutions, and the palace where "little room of tricks" was burnt to the ground, and the dudes who did the early recording gear lost lives after joining armies because they wandered around paddocks so absentmindedly trying to think up a better computer. History is so unkind and unforgivable. Patrick Turner. You were just wrong. Shut up.- Hide quoted text - - Show quoted text - I never intended to be serious about the matter. Let me know if ya feel any effects from the pale blue humerator pill. Perhaps they have zero effect on you, and you will forever remain a grumpy old curmudgeon. Beware the dark blue pill. That one gives you a hard-on for a weak, and a hard-on is a device invented, of course, by the Devil, and, in your hands, it would be a waste if nobody smiled while ya use it. Patrick Turner. You're not only ignorant, you're a pervert. |
#14
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Basic magnetic phenomena explained
snip.
I never intended to be serious about the matter. Let me know if ya feel any effects from the pale blue humerator pill. Perhaps they have zero effect on you, and you will forever remain a grumpy old curmudgeon. Beware the dark blue pill. That one gives you a hard-on for a weak, and a hard-on is a device invented, of course, by the Devil, and, in your hands, it would be a waste if nobody smiled while ya use it. Patrick Turner. You're not only ignorant, you're a pervert Any talk about specific details of sexual behavior in a non serious manner has you running to mummy. "Oh Mummy, there's a horrible nasty man over there saying rude words..." He he, let me know when ya can learn to consider the incongruous and laugh. Take more pale blue pills Valvy! Don't mistake them for the pale purple ones. Patrick Turner. |
#15
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Basic magnetic phenomena explained
Patrick Turner wrote:
snip. I never intended to be serious about the matter. Let me know if ya feel any effects from the pale blue humerator pill. Perhaps they have zero effect on you, and you will forever remain a grumpy old curmudgeon. Beware the dark blue pill. That one gives you a hard-on for a weak, and a hard-on is a device invented, of course, by the Devil, and, in your hands, it would be a waste if nobody smiled while ya use it. Patrick Turner. You're not only ignorant, you're a pervert Any talk about specific details of sexual behavior in a non serious manner has you running to mummy. "Oh Mummy, there's a horrible nasty man over there saying rude words..." He he, let me know when ya can learn to consider the incongruous and laugh. Take more pale blue pills Valvy! Don't mistake them for the pale purple ones. Patrick Turner. Let's see...someone calls you on a matter of historical accuracy. Your response is to start blathering away about his dick. Pervert. shrug Faggot, probably. again, shrug Carry on, loser. |
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