MAGNETIC CORES - PART I - PROPERTIES

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  • Опубліковано 27 січ 2025

КОМЕНТАРІ • 68

  • @beingatliberty
    @beingatliberty 10 років тому +106

    these old military films are clear and descriptive in ways that modern guides could learn from.

    • @ramblinevilmushroom
      @ramblinevilmushroom 10 місяців тому +4

      We used to fund this, instead of requiring that it be profitable in itself to exist.

  • @sagittariuslibra6824
    @sagittariuslibra6824 Рік тому +8

    I’ve listened to the podcast 13 minutes to the moon and was looking for a simple explanation of rope core memory. This explanation is so structured and comprehensible that the technology it explains can really shine!

  • @shashvatshukla
    @shashvatshukla 9 місяців тому

    This is such a good explanation. Quantum computers are discussed like this today :))

  • @ibanreyes8
    @ibanreyes8 12 років тому +25

    BEST EXPLANATION. ITS A 10 OUT OF 10

  • @jnewbon00
    @jnewbon00 12 років тому +16

    better explanation than ive ever heard in my life im 30 !!!

  • @robertlee5456
    @robertlee5456 Рік тому +17

    Meanwhile, in Electrical Engineering 101 -- the professor throws up a picture of a rectangular B-H curve, mumbles something about how "this is how magnetic materials respond" and then moves on to the next topic in less than 3 minutes. Students shrug, and are then mystified by the black magic that is applied magnetics when encountering them in real life.

  • @gerryjamesedwards1227
    @gerryjamesedwards1227 Рік тому +6

    When he says that the cores will keep their residual magnetism 'indefinitely', he's not joking! Curious Marc and his team can read data from core memory some 50-60 years after it was written. Amazing stuff, especially when you see the tiny little cores interlaced with all these tiny wires that were all woven by hand.

    • @BarrettLewis-o2p
      @BarrettLewis-o2p 8 місяців тому

      This is NOT what is shown in Curious Marc's video. This is a writable memory and all that is shown is in service of how to write it. The rope memory data is stored permanently in how the wires are routed in and out of the cores. Those rope memories are readable not because the magnetism survived, but because the wires still go through the same cores they did 60 years ago.

  • @j78513
    @j78513 4 роки тому +5

    educational videos so good, it can teach a sleep deprived teenager in AIT.

  • @Sixalienasa
    @Sixalienasa 3 роки тому +3

    How could anybody with a desire to learn not like this video?????????????????????????????????????????????????????????????????

  • @RobbieBlue
    @RobbieBlue 6 років тому +1

    Great stuff

  • @TheLocoUnion
    @TheLocoUnion 6 років тому +2

    Love the heroic music!!!!

  • @hotbird3
    @hotbird3 Рік тому

    Wow,,, clear and precise information

  • @ZackLondres
    @ZackLondres 4 роки тому +17

    By the beard.... they knew how to explain complex concepts back then. how did we forget how to do this? No wonder all the engineers trained back in those days are so amazing. they had better teachers.

    • @j78513
      @j78513 4 роки тому +5

      I think it was the technical culture back then. Most engineers of that time probably got their first taste of technology on a farm, and then during the war had to be taught in large numbers very quickly ever more complex tech as it emerged. What your seeing is the people who learned both theory and application on a intuitive level. To be fair, some youtubers are getting to this point today, they just don't have a military budget and a battle hardened (look at the stripes on the cuff, each on is 6 months deployment) Sargent for lecturer.

    • @THEMFORMATION
      @THEMFORMATION 2 роки тому

      They didnt. Its on purpose so people dont realize our universe is energetically interconnected and still very much alive.

    • @MadScientist267
      @MadScientist267 4 місяці тому

      1. Film is expensive.
      2. Monetization.

  • @LydellAaron
    @LydellAaron 2 роки тому +3

    6:30 couldn't have been said better - cause and effect. Huge epiphany 17:00 IS the entanglement! Those two cores are entangled, separating them (if you could separate them) is the essence of the phenomena. We have been covering it as an undesireable property all this time. Exciting.

  • @EnergyCourtier
    @EnergyCourtier 12 років тому +2

    Love these videos. Subscribed.

  • @eddiekulp1241
    @eddiekulp1241 Рік тому +1

    More turns of coil and more voltage gets the job done .

  • @Yorumcu63
    @Yorumcu63 2 роки тому

    Thank you for video

  • @PvPigCreations
    @PvPigCreations 9 років тому +5

    i got it at first time! Now I'm gonna make one too, cause I can't make a silicon transistor

  • @simpleau2
    @simpleau2 12 років тому +13

    They never bothered to explain all of this in school, it's a pain trying to read older electronic schematics.

    • @greenthizzle4
      @greenthizzle4 6 років тому +2

      simpleau2 this is ancient technology that will likely never be used again, that's why

    • @manueljonathancaceres1265
      @manueljonathancaceres1265 3 роки тому +1

      ​@@greenthizzle4 Maybe. But as a basic knowledge, it´s fantastic.

  • @Khwartz
    @Khwartz 8 років тому +1

    A Teaching is As Clear the Understanding of the Teacher is Clear and has the INTENTION to Communicate this Understanding.
    Now You may deduce the reasons why the present teachings are not so Understable... ^_^

  • @daoyuzhang1648
    @daoyuzhang1648 3 роки тому +2

    The displayed flux and current relation is for the current of electrons (from negative to positive), in stead of the electric current(from positive to negative).

    • @lucaseaston
      @lucaseaston 2 роки тому

      I thought it looked back to front compared to what I know (Right hand rule).

  • @sludge-en9on
    @sludge-en9on 7 років тому

    so cool

  • @kreynolds1123
    @kreynolds1123 7 років тому +3

    LAMO: Opening Line: Modern Data processing systems like these...... I love it.

  • @onlyeyeno
    @onlyeyeno Рік тому

    Let me begin by expressing my sincere gratitude to You for "eternizing" these films and for sharing them with us.
    How ever I have a question regarding what "Sergeant" is saying.
    After just having said:
    "A non-dot input sets the first core to a 1(one). Nothing happens to the second core".
    (@20:56) He continues to say:
    " Power flowing in this direction sets a core to 0(zero), but that's where this core is Already"..
    Now while that is true and correct, it seems a bit odd that he at least doesn't add that EVEN if the second core was a 1(one) it STILL would not change TO a 0(zero) due to the fact that the "unidirectional device" would NOT ALLOW any current to flow in that direction !??
    Since the "unidirectional device" TOTALLY disables the second core to "receive input" on it's "Dot-Input" [[I.e. setting it to 0]] regardless of what the previous core is "doing"....
    Or am I misunderstanding how this works ??
    Best regards.

  • @R0WD1E
    @R0WD1E 13 років тому +5

    more than my text book can explain....

  • @aes9217
    @aes9217 8 місяців тому

    Weren't there any D-flip flops back then?

  • @tech_sol
    @tech_sol 6 місяців тому

  • @Fooballium
    @Fooballium 3 місяці тому

    Why is the flux direction wrong in the video? Was something changed? Basic right hand rule...

  • @adhil8918
    @adhil8918 3 роки тому

    Thanks

  • @rhondadoerfler6490
    @rhondadoerfler6490 3 роки тому

    I am glad my guys didn't add a "dot side" but sided instead with over-loading and blowing our little dot and getting that out of the way so he could maintain our attention for 40 more minutes instead of losing us to taking a powder in the parking lot.

  • @TB-jl9fr
    @TB-jl9fr 11 місяців тому

    Wild times using chokes as information storage.

  • @donaldleecook009
    @donaldleecook009 10 років тому +1

    If you dismiss the dot concept and rely on lenz-law at 21:02, the bit will never shift because there is not a change in a magnetic field. If I am wrong, help me understand without using this added dot concept because it can easily be arranged differently and not give the same answer.

  • @VandalIO
    @VandalIO Рік тому

    forgive me, if this is a dumb question, but I always wondered? why the magnetic core needs to be toridal? why can't it be a bar or a cylinder?

    • @TB-jl9fr
      @TB-jl9fr 11 місяців тому

      There also exist rod type cores and so called I cores, which are basically a flat bar.
      Huge benefit of toroidal is, that you can fit a decent amount of turns and and also have the terminals aligned propper. Also, they are very compact.
      The shape you desire depents on your magnetics purpose.

  • @AliasUndercover
    @AliasUndercover 12 років тому +2

    Thousands...almost makes you wonder what you could do with so little.

  • @aaronjennings8385
    @aaronjennings8385 Рік тому

    So that's a bit. I wondered what they looked like.

  • @cult-of-sporque
    @cult-of-sporque 2 роки тому

    I'm just sitting here with my mind blown over bit shifts being literal electrical pulses.

  • @davekendall9749
    @davekendall9749 2 роки тому +1

    Imagine flying to the moon and back on this technology. No magnets on board please! If you want to return. :-(

  • @soufianelezan
    @soufianelezan 11 років тому +6

    and then the transistor, so we trow all this knowledge away.

  • @dumle29
    @dumle29 12 років тому +2

    11:53 i see a logo, but i cannot for the life of me remember which logo. Or am i seeing things?

  • @classic5005
    @classic5005 6 років тому

    القوة القسرية coercive force

  • @timrohrbach1801
    @timrohrbach1801 4 роки тому +2

    Magnetic core memory was amazing!!!
    That is, when you had nothing else.
    Then along came the transistor and magnetic cores were thrown out to the trash pile of history.

    • @hmpeter
      @hmpeter 3 роки тому +1

      They were actually used two decades or so into the transistor era for being way smaller, cheaper, more reliable and less power hungry. Transistor integration is what made it obsolete in the end.

  • @GClephMusique
    @GClephMusique 2 роки тому

    join the dot side, Luke!

  • @Tom-c1q2k
    @Tom-c1q2k Місяць тому

    wow so trigger n charge flip the magnetic ring. what if trigger and charge. wrapped around a ringy doughnut thingy. n the core wa MURCURY. n it sloshed around in a toroidal victor Sheberghan vortexy stuff. insde that wire'y thingy. that strores stuff. but it spins abit quick 2 find that. N SO cascades the outputs. to power it's self as it collapes. so CYCLING. a water core would work 2.

  • @421sap
    @421sap Рік тому

    In Father and my Husband Jesus' Name, Amen ✝️✨

  • @eddiekulp1241
    @eddiekulp1241 Рік тому

    Put that type memory in a cell phone it would be to big to carry

  • @keithreynolds7740
    @keithreynolds7740 10 років тому +1

    Wow: "Modern data processing like these..." heh.

  • @heedfulnewt6625
    @heedfulnewt6625 4 роки тому +1

    Shhh don’t tell 🤫

  • @jnewbon00
    @jnewbon00 Рік тому

    This is what giving a fuck looks like. Modern school teaching could learn something from this.

  • @AlexanderWeurding
    @AlexanderWeurding Рік тому

    B 0,1 / 0.1

  • @rhondadoerfler6490
    @rhondadoerfler6490 3 роки тому

    My comment appears twice. That is not my doing or choice. 9:24pm 20 Sept 2021

  • @TrillShatner
    @TrillShatner 2 роки тому

    lmfao, it's a pre-transistor-era "eeprom".