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Seite: technics-electric-motors-permanent-magnets_ge.htm
Datum: 2018.04.22 08:46:53 (UTC+1)
Name: Karsten Kötting
Kommentar:
sehr schön danke
Me: Bitte gerne und: Weitersagen!
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Seite: technics-electric-motors-permanent-magnets_ge.htm
Datum: 2017.12.11 13:28:13 (UTC+1)
Name: hans
Kommentar:
Permanent erregter Gleichstrommotor
Me: Das schreibt auch die Wikipedia zusammen
https://de.wikipedia.org/wiki/Gleichstrommaschine#Permanenterregte_Gleichstrommaschine
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Seite: technics-electric-motors-permanent-magnets_ge.htm
Datum: 2016.02.02 um 09:04:36 (UTC+1)
Name: adolf
Kommentar:
sehr gute erklärungen weiter so !!!!!!
Me: Danke und: Ich mach ja schon weiter - bastel grade an einem Upgrade von CNC v2.0...
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Seite: technics-electric-motors-permanent-magnets_ge.htm
Datum: 2015.06.10 um 21:04:03 (UTC+1)
Name: Anke
Kommentar:
Hallo Norbert,
ich lese immer wieder gern auf deinen Seiten und guck die Videos und auch dieses Video ist perfekt formuliert :-) und sehr verständlich erklärt und bildlich animiert.
Gute Inspiration in Trier.
Anke
Me: Dank deiner Fehlerkorrektur ist die Formulierung noch ein wenig perfekter geraten :-)
Ein Stück Inspiration für Trier wird gerade zusammengelötet: Ein Polargraph.
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.29 at 13:56:14 (UTC+1)
Name: tobie
Comment:
HI,
prove read = proof read
regards
Tobie
Me: ...fixed that misspelling - thanks!
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.28 at 17:03:55 (UTC+1)
Name: Bee
Comment:
thanks alot for all the sharing of all your hard work and knowledge. Your a great man! As i slowly try to digest this info in my spare time. i hope to achieve a portion of your knowledge. Your student!
Bee
Me: You're welcome! Hope to get some feedback during your duration of study.
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 23:52:30 (UTC+1)
Name: Nathan Bruer
Comment:
0075 When the coil is turned a (couple || few) degrees, both ends make contact, each with one terminal of the supply voltage.
I had a typo in my response, my bad!
0099 That electromagnet is connected to the supply voltage resulting in a magnetic field being produced.
I must have rushed this one too.
Me: An I did simple copy & paste without thinking deeply about that typos...
0075 Changed again...
0099 ...changed again.
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 18:43:58 (UTC+1)
Name: Nathan Bruer
Comment:
0060 Same as before, there are repulsive forces acting between solenoid's ends and permanent (magnets), but the direction of forces have changed.
You are referring to the "ends" of the solenoid which is possessive. I put "magnets" in parenthesis, because if you are referring to the ends of the magnet, I'd use "magnet's ends".
0072 The real experiment confirms the predictions of the animation, but it is impossible to get the right timing by toggling the voltage source by hand and get a continuous rotation.
0075 When the coil is turned for a (couple || few) degrees, both ends make contact, each with one terminal of the supply voltage.
See my comment before on "couple/few".
0076 That results in a positive current running from that solenoid end marked with a dot to the second end marked with a circle and which is connected to the negative terminal of the supply voltage.
0080 At a certain angle of rotation, the switch cuts the coil's current resulting in the magnetic field disappearing.
0086 Because the electromagnet has rotated 180 degrees from it's initial position, once again the north pole is located at the top left of the arrangement - same as in the initial state.
0099 that electromagnet is connected to the supply voltage by what the magnetic field produces.
I think you meant "the" instead of "e"
0106 When turned a few more degrees, the commutator brakes the contact of the white coils and the voltage source, thus that magnetic field disappears.
0109 There is no point in the rotation where both electromagnets are disconnected from the voltage source.
0139 Finally you can prove your knowledge about DC electric motors:
0006 Yes, "are" is for plural and "is" is for singular. In this case the noun being referenced is "particles" which is plural making it "are".
Me: Thanks again!
0060 Same as before, there are repulsive forces acting between solenoid's ends and permanent magnet's ends, but the directions of forces have changed.
0072 The real experiment confirms the predictions of the animation, but it is impossible to get the right timing for a continuous rotation when toggling the voltage source by hand.
0075 When the coil is turned for a couple degrees, both ends make contact, each with one terminal of the supply voltage.
0076 Changed.
0080 Changed.
0086 Changed.
0099 That electromagnet is connected to the supply voltage by what a magnetic field is produced.
0106 Changed.
0109 Changed.
0139 Changed.
0006 In Germany that would refer to "sum", which is always singular - so now it's changed to plural.
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 17:49:35 (UTC+1)
Name: Nathan Bruer
Comment:
0006 The metal wire consists of an equal number of positive and negative charged particles, thus the sum of the particles are neutral.
0024 (That force || Which) is turned into an attracting force between both magnets when swapping the polarity of the electromagnet.
0026 The positive terminal of the voltage source is still to the right of the solenoid.
I'd suggest changing the wording to something more like:
0026 The positive terminal's source is still to the right of the solenoid.
As voltage is implied when you stated: "Positive Terminal"
0038 When moving along the wire starting at the right end, the windings go clockwise when looking at the right end of the solenoid
0041 When following the wire again from right to left, the windings are now running counterclockwise when looking (on || at) the right end of the solenoid.
"right to left" because it's a common phrase in english. Although your version is grammatically correct, this is more common. Also "on or at" depends on what the video shows.
0043 If the positive terminal of the supply voltage is attached to the right end of the wire, you can determine the position of the magnetic north pole by using your right hand - (the || your) thumb will point to the right end.
you'd need a possessive pronoun or "the"
0045 The windings of an electromagnet are usually closely spaced, thus a wire with an insulation coating is needed.
Isolating is if it's something being done now. In this tense you are not isolating it, because it's already isolated, however you could use "isolation coating", but "insulation coating" is easier to understand for non-native speakers.
0047 Damage to the insulation may reduces the strength of the magnetic field since the electrical flow might skip one or more windings.
0049 With an alternating magnetic field of a solenoid we will now try to produce rotational movement.
The use of "the" is used when fully established, "a" or "an" is used when not fully established.
0051 If a current runs through the wire, both halves of the solenoid can be treated as single electromagnet, each half's magnetism will be the same direction as the windings.
This part was un-clear to me, I think this is what was meant to be said.
0059 The situation changes, if the solenoid is turned clockwise a (few || couple) degrees:
If you remove "for" it would be grammatically correct, however, I'm not sure if it's American-english or general english, but "a few" or "a couple" is much more common verbiage.
Me: Thanks for your reply, especially for the additional comments on the corrections. That (hopefully) helps to avoid similar errors in the future.
0006 Really "are neutral" instead of "is neutral"?
0024 I prefer the original version if there is nothing wrong with it.
0026 changed to your version
0038 When moving along the wire starting at the right end, the windings go clockwise when looking on the left side of the coil. (As stated by another post on Facebook)
0043 If the positive terminal of the supply voltage is attached to the right end of the wire, you can determine the position of the magnetic north pole by using your right hand - your thumb will point to the right end.
0045 The windings of an electromagnet are usually closely spaced, thus a wire with an insulation coating is needed.
0047 Changed
0049 Changed
0051 Changed, yes I'd say that's what I had in mind.
0059 The situation changes, if the solenoid is turned clockwise a few degrees:
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Seite: technics-electric-motors-permanent-magnets_ge.htm
Datum: 2015.05.24 um 18:24:36 (UTC+1)
Name: Stefan
Kommentar:
0152 Die untere Hälfte wird nach rechts gezogen, die obere Hälfte nach linkt.
..links
..super Video!
Me: Danke, ist korrigiert.
...das Video ist doch noch gar nicht fertig...
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 14:11:38 (UTC+1)
Name: roland
Comment:
0002 DC motors produce rotary motion via the interaction between the alternating magnetic field of an electromagnet named rotor and the static field of two or more permanent magnets named stator.
to
0002 DC motors produce a rotary motion via the interaction between the alternating magnetic field of an electromagnet named rotor and the static field of two or more permanent magnets named stator.
Comment:
0013 When looking on the opposite end of the coil, the current runs clockwise.
to
0013 When we look at the opposite end of the coil, the current runs clockwise.
Me: Thanks! I often mix that "on" and "at"...
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 13:05:08 (UTC+1)
Name: Andrew, http://spirit.re/
Comment:
0007 In a metal wires,
0007 In a metal wire,
0046 If you use a blank wire, the current won't follow the windings, but cross the solenoid directly -by what you won't get the desired magnetic field-.
0046 If you use a blank wire, the current won't follow the windings, but cross the solenoid directly, -and therefore you will not get the desired electromagnetic field-.
0048 electromagnet is called* a* turn-to-turn fault.
That's pretty much all grammatical errors. Good job!
Me: Thanks!
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Page: technics-electric-motors-permanent-magnets_en.htm
Date: 2015.05.24 at 12:55:34 (UTC+1)
Name: Andrew, http://spirit.re/
Comment:
0002 That motor produces rotary motion caused by the interaction between the alternating magnetic field of an electromagnet and the static field of two permanent magnets.
0002 DC motors produce rotary motion via the interaction between the alternating magnetic field of an electromagnet(rotor) and the static field of two(or more) permanent magnets(stator).
Me: Thanks, I have changed this to:
0002 DC motors produce rotary motion via the interaction between the alternating magnetic field of an electromagnet named rotor and the static field of two or more permanent magnets named stator.