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Search preserved mailing-list messages and current email and website contributions. Current posts are searchable before weekly archival. Recovery gaps remain possible. Words are matched together; try fewer terms if needed.

Page 1+: 60 results shown for Field coil.

Source-balanced relevance: matches from both collections are interleaved, with source dates breaking ties. Restoration time is not the original posting date.

  • Re: The alternator issue
    Historical mailing list - David Beierl
    Sun, 18 Apr 2010 18:16:22 -0400
    ...coil drive voltage, so it doesn't short out the coil; but when the circuit opens the collapsing magnetic field in the coil drives...
  • Re: The details of Motronic (long but no cigar)
    Historical mailing list - Pensioner
    Wed, 1 Oct 2003 16:12:19 -0700
    ...This change in the current from saturated value to zero causes the collapse of the magnetic field in the coil and the change in...
  • Re: The alternator issue
    Historical mailing list - Robert Fisher
    Mon, 19 Apr 2010 20:19:10 -0700
    ...coil drive voltage, so it doesn't short out the coil; but when the circuit opens the collapsing magnetic field in the coil drives...
  • Re: coil fires
    Historical mailing list - RTF_SSS
    Tue, 17 Oct 2000 09:26:08 -0500
    ...The coil is a transformer and works by inducing a field from primary to secondary. With direct current flowing through the primary, there is...
  • Re: Cold Starting
    Historical mailing list - Nancy Eilers-Hughes
    Mon, 1 Dec 2003 21:51:30 -0700
    ...Those shorted windings will still collect field energy, most of which is dissipated as heat in the coils fill oil. You may have seen...
  • Re: The alternator issue
    Historical mailing list - Mike Rocket J Squirrel
    Sun, 18 Apr 2010 19:13:01 -0700
    ...coil drive voltage, so it doesn't short out the coil; but when the circuit opens the collapsing magnetic field in the coil drives...
  • Re: i dont know!
    Historical mailing list
    Fri, 20 Sep 1996 11:36:27 +0200
    ...The ignition control unit is designed to supply current to the coil's primary winding while the shutter wheel is blocking the field. When...
  • Re: amps in/amps out ??
    Historical mailing list - David Beierl
    Sun, 17 Aug 2014 18:57:35 -0400
    ...Your local MRI machine contains a massive steady magnetic field caused by a permanent current in a superconducting coil which, once established, will remain...
  • ammeter question
    Historical mailing list - David Etter
    Mon, 19 Mar 2007 19:56:24 -0600
    ...field in a coil to operate the ammeter it would perhaps act much like a choke in a normal electrical circuit. Any field offers...
  • Alternator, V.R. question
    Historical mailing list
    Wed, 27 Dec 95 18:15:07 CST
    ...DF I am guessing is the field coil. D+ also connects to a wire from the dashboard light. I'm a bit confused on...
  • looking for a starter
    Historical mailing list - David Luddy
    Sun, 17 Sep 2000 04:12:46 -0400
    ...Mine died tonight (field coils open)
  • Re: Help diagnosing a red battery light
    Historical mailing list - mark drillock
    Thu, 24 Jul 2014 17:58:05 -0700
    ...The field coil in the alternator acts as ground path for the dash charging indicator led when the alternator is not spinning. Once the...
  • Re: A totally "Shocking" story! NO VANAGON CONTENT, BUT ALL VW
    Historical mailing list - Dennis Haynes
    Fri, 21 Feb 2014 13:48:56 -0500
    ...True DC motors relay on magnets or field coils along with the commutators and brushes. The brushes and commutators wear and add friction. While...
  • Re: Gap of Sparks
    Historical mailing list - David Beierl
    Sat, 15 Feb 2003 21:34:50 -0500
    ...The magnetic field in the coil rapidly collapses, generating a high voltage in the primary circuit (the points side of the circuit and a...
  • Re: electrical woes (p-mail)
    Historical mailing list - Rob
    Tue, 17 Jul 2007 17:01:49 -0700
    ...I am not sure if Vanagon's Bosch > > >alternator is brushed (for the field coil) or brushless. > > >The alternator is likely the cause of...
  • Re: ammeter question
    Historical mailing list - Michael Elliott
    Mon, 19 Mar 2007 23:24:20 -0700
    ...The current goes through a coil and the resultant magnetic field moves the pointer. This does take power, which is caused by passing that...
  • Re: Possible...Overheating
    Historical mailing list - David Beierl
    Tue, 23 Apr 2013 18:41:04 -0400
    ...circuit supplies a tickler current to the field coil to create a small initial magnetic field that is then bootstrapped as the output voltage...
  • Re: Another coil fire
    Historical mailing list - Scott De Santi
    Tue, 17 Oct 2000 10:12:09 EDT
    ...Isn't a coil just a transformer with X number of windings on the input and many, many X windings on the output? And...
  • Re: Cause of weak spark?
    Historical mailing list - David Beierl
    Sun, 20 Sep 2015 09:29:02 -0400
    ...to instantly rise very high as the collapsing field cuts the turns of the coil. This phenomenon is known as inductive kick and occurs...
  • Re: Cold Starting
    Historical mailing list - Eric Zeno
    Wed, 12 Nov 2003 14:07:46 -0500
    ...Put a DC current thru any coil, and you get a magnetic field. Remove the power the field collapses, causing a reverse voltage into...
  • Re: battery kill switch
    Historical mailing list - David Beierl
    Sat, 25 Aug 2012 01:11:49 -0400
    ...You have to disconnect the alternator field coil before the battery; otherwise the sudden spike on disconnect (only if the engine is running) may...
  • Re: Gap of Sparks
    Historical mailing list - David Beierl
    Sat, 15 Feb 2003 21:49:28 -0500
    ...that was stored in >the coil -- then discharges shoves it back into the coil again, expanding >the magnetic field and generating another fast spark...
  • Re: electrical woes
    Historical mailing list - David Kao
    Mon, 16 Jul 2007 08:23:46 -0700
    ...I am not sure if Vanagon's Bosch alternator is brushed (for the field coil) or brushless. The alternator is likely the cause of...
  • Re: ammeter question
    Historical mailing list - Loren Busch
    Mon, 19 Mar 2007 19:35:52 -0700
    ...field in a coil to operate the ammeter it would > perhaps act much like a choke in a normal electrical circuit. > Any field offers...
  • Re: Help diagnosing a red battery light
    Historical mailing list - Poppie Jagersand
    Thu, 24 Jul 2014 17:32:22 -0700
    ...What currents do others measure? How is the field coil circuit supposed to function? thanks, Martin (and '82 Westy 1.9TD)
  • Re: Alt idiot light on
    Historical mailing list - Dennis Haynes
    Thu, 25 Jul 2002 19:56:53 -0400
    The wire for the alternator field energizes the relay coil. The relay contacts connect the fridge circuit to the battery after the alternator "kicks...
  • Re: 88 GL Tachometer Inop after New Coil Install
    Historical mailing list - Ryan Press
    Thu, 9 Jan 2014 15:05:38 -0800
    ...It gets this high voltage from the coil as the magnetic field collapses, the "peak primary voltage." For my EJ25 conversion I made a...
  • Re: ammeter question
    Historical mailing list - neil
    Mon, 19 Mar 2007 19:36:26 -0700
    ...field in a coil to operate the ammeter it would > perhaps act much like a choke in a normal electrical circuit. > Any field offers...
  • Re: ammeter question
    Historical mailing list - David Etter
    Tue, 20 Mar 2007 06:37:16 -0600
    ...The current goes through a coil and the resultant >magnetic field moves the pointer. This does take power, which is >caused by passing that...
  • Re: Cold Starting
    Historical mailing list - tom ring
    Wed, 12 Nov 2003 20:29:55 -0600
    ...Put a DC current thru any coil, and you get a magnetic > field. Remove the power the field collapses, causing > a reverse voltage into...
  • Re: Cold Starts
    Historical mailing list - Eric Zeno
    Thu, 13 Nov 2003 07:17:44 -0500
    ...THe coil is charged to max. flux every cycle. When the field collapses, the electronics have to jump the path of lease resistance, (the...
  • Re: vanagon single electrode plugs
    Historical mailing list - LOREN BUSCH
    Sat, 19 Jun 2004 11:03:05 -0700
    ...The spark is provided by the back EMF from a collapsing field induced into the secondary winding of the coil. It is a collapsing...
  • generator
    Historical mailing list
    Tue, 7 Nov 1995 18:29:16 -0600
    ...of the filed coils. I always did it when I made a repair. To do this, you ground the field of the generator, and...
  • Re: Alt idiot light on
    Historical mailing list - David Beierl
    Thu, 25 Jul 2002 20:44:16 -0400
    ...From there it goes to Alternator D+ terminal, in parallel with fridge relay coil, battery relay coil, whatever else people have hung on there...
  • Re: electrical woes (p-mail)
    Historical mailing list - David Kao
    Tue, 17 Jul 2007 10:21:28 -0700
    ...I am not sure if Vanagon's Bosch > >alternator is brushed (for the field coil) or brushless. > >The alternator is likely the cause of...
  • Re: Vanagon Starter - windings available?
    Historical mailing list - Stan Wilder
    Tue, 6 Sep 2005 22:33:15 -0500
    I'll just bet they can order heavier field coils for your starter .............. say like might go in the starter for a Diesel. Stan...
  • Re: ECU: burned parts. PICS (Jetta Engine in Vanagon)
    Historical mailing list - Raymond Markett
    Sun, 14 Sep 2014 01:45:46 -0700
    ...L usually stands for coil on U. S. schematics, but maybe VW uses B for the B field associated with a coil. Sent from...
  • Re: dwell
    Historical mailing list - Mark Rokus
    Tue, 16 May 2000 20:08:18 -0400
    ...coil is not a "one shot" like you would see with points. (I realize that there is ringing with points as the field in...
  • Re: Engine stutters, tach nosedives. Then, just as suddenly, it's,normal again.
    Historical mailing list - Keith Hughes
    Sat, 28 Feb 2009 10:31:29 -0700
    ...The coil doesn't care whether there's a coil wire in the tower or not, the ICU/ECU still collapses the primary field...
  • Deal on Bosch Coils & Rear Bumpers
    Historical mailing list - The Bus Depot
    Tue, 28 Nov 2000 18:52:59 -0500
    ...If you order via the web, specify LISTMEMBER in the "comments" field to get the special coil price, or DENTED to get the bumper...
  • Re: Correct Gap of Sparks
    Historical mailing list - Steve Delanty
    Thu, 20 Feb 2003 11:11:14 -0800
    ...How long it takes the coil to reach a particular voltage is a function of the inductance of the coil. Find someone who's...
  • Re: Correct Gap of Sparks
    Historical mailing list - Steve Delanty
    Thu, 20 Feb 2003 11:28:53 -0800
    ...How long it takes the coil to reach a particular voltage is a function of the inductance of the coil. Find someone who's...
  • Re: New Tech. in Old Applications.
    Historical mailing list - David Beierl
    Sun, 14 May 2000 00:17:43 -0400
    ...Also as the current drops, the magnetic field in the primary coil collapses and the windings of the secondary, which absorbs some of the...
  • Re: vanagon single electrode plugs
    Historical mailing list - Daniel L. Katz
    Sat, 19 Jun 2004 14:55:10 -0400
    ...The spark is provided by the back EMF >from a collapsing field induced into the secondary winding of the coil. >It is a collapsing...
  • Re: electrical woes (p-mail)
    Historical mailing list - monte merrick
    Tue, 17 Jul 2007 10:46:30 -0700
    ...I am not sure if Vanagon's Bosch >>> alternator is brushed (for the field coil) or brushless. >>> The alternator is likely the cause of...
  • Re: Miss at idle?
    Historical mailing list - David Beierl
    Sun, 15 May 2016 04:44:23 -0400
    ...When you close the circuit current builds up [more] slowly because of the energy going into expanding the field. When you open the circuit...
  • Re: electrical woes (p-mail)
    Historical mailing list - David Kao
    Tue, 17 Jul 2007 17:48:36 -0700
    ...I am not sure if Vanagon's Bosch > > > >alternator is brushed (for the field coil) or brushless. > > > >The alternator is likely the cause of...
  • Re: Correct Gap of Sparks
    Historical mailing list - Steve Delanty
    Thu, 20 Feb 2003 11:30:17 -0800
    ...It's a question of how long it takes the magnetic field in the coil to collapse enough to create the needed voltage to...
  • Re: Correct Gap of Sparks
    Historical mailing list - Steve Delanty
    Thu, 20 Feb 2003 11:23:47 -0800
    ...It's a question of how long it takes the magnetic field in the coil to collapse enough to create the needed voltage to...
  • Re: type of connector?
    Historical mailing list - David Beierl
    Fri, 25 May 2012 11:37:23 -0400
    ...a magnetic field is the point of the exercise. But you can splice into the 15 circuit right at the ignition coil, and I...
  • Re: No activity from starter
    Historical mailing list - Larry Alofs
    Tue, 26 Jan 2010 21:27:21 -0600
    ...I had that starter rebuilt, but it was a little more expensive than usual because they had to replace the field coils: the end...
  • Re: spark plugs, etc
    Historical mailing list - Jfp w/3 WBXs
    Fri, 9 Aug 2002 22:21:53 +0000
    ...system to cause the ignition coil to "grunt" as the primary circuit is broken and the coil magnetic field collapes. Parallel circuitry lowers or...
  • Re: Coil Fires, 7.5KOhms
    Historical mailing list - pensioner
    Mon, 16 Oct 2000 20:14:05 -0700
    The coil works as a dynamic resistance or impedance if you like. The secondary DC resistance of 7.5K has virtually no effect on...
  • Re: Alternator not charging/ solenoid meltdown
    Historical mailing list - David Beierl
    Tue, 22 Feb 2000 21:00:33 -0500
    ...And it would have to be somewhere else on the 15-circuit, otherwise the battery would slowly drain through the field coils while the...
  • No start/no spark
    Historical mailing list - TJ Hemrick
    Sun, 30 Oct 2011 13:23:16 -0400
    ...Is there any way to do a field check on the Hall Effect Generator or coil. I'll end up bumming a ride from...
  • Follow up on my no start when hot issue
    Historical mailing list - Jim Morgan
    Fri, 12 Oct 2007 21:46:16 EDT
    ...The story is- bad starter (field coil was coroded) riped afm bootwhen starter motor was replaced.Would not idle,Now it idle just perfecty...
  • Re: Generic ignition coil on 1.9?
    Historical mailing list - David
    Mon, 21 Nov 2016 00:46:49 +0000
    ...The process works as follows: > Current flows, the coil builds up a magnetic field. > Current stops, the filed collapses and inductance causes the secondary...
  • Re: dwell
    Historical mailing list - Mark Rokus
    Tue, 16 May 2000 20:11:24 -0400
    ...Just a Pertronix, a coil and the stock dist, > wires+plugs. > > ----- Original Message ----- > From: "David Beierl" <dbeierl@IBM.NET> > To: <vanagon@GERRY.VANAGON.COM...
  • Re: Solenoid-to-starter wire replacement?
    Historical mailing list - Larry Alofs
    Thu, 22 Jun 2006 21:35:35 -0500
    ...When I took mine to a rebuilder, they said they had to replace the field coils so it cost me a little more than...
  • Re: electrical woes (p-mail)
    Historical mailing list - Jake de Villiers
    Tue, 17 Jul 2007 10:55:41 -0700
    ...I am not sure if Vanagon's Bosch > >>> alternator is brushed (for the field coil) or brushless. > >>> The alternator is likely the cause of...