[Diy_efi] Testing an inductance coil.

Wed Aug 17 23:05:14 UTC 2005

--===============1282169467==
Content-Type: multipart/alternative;
	boundary="-----------------------------1124319213"

-------------------------------1124319213
Content-Type: text/plain; charset="US-ASCII"
Content-Transfer-Encoding: 7bit

In a message dated 8/17/2005 5:41:14 P.M. Eastern Standard Time,  
WSCowell at aol.com writes:

Good grief... there is no suggestion the coil has shorts, and I DID  advise 
use of an oscilloscope, by far the best test.  It would tell  whether the coil 
is doing its job as a CT.  Unless you have design info  you won't know the 
design inductance etc.

NB we are of course not talking about injectors here, nor ignition  coils.  
My advice was very sharply focused on the subject matter  presented...  It 
never hurts to address the question asked.   :-)

Will C

I was not following the thread its just time to end it. the  best way to test 
a coil is with current ramping via a low amps probe and use an  oscilloscope 
to graph the used current wave form. this only comes from years of  diagnosing 
bad inductive coils on engine control systems for 15 yrs. best of  luck 
trying to use a voltage wave form. 

-------------------------------1124319213
Content-Type: text/html; charset="US-ASCII"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; charset=3DUS-ASCII">
<META content=3D"MSHTML 6.00.2800.1515" name=3DGENERATOR></HEAD>
<BODY id=3Drole_body style=3D"FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY:=20=
Arial"=20
bottomMargin=3D7 leftMargin=3D7 topMargin=3D7 rightMargin=3D7><FONT id=3Drol=
e_document=20
face=3DArial color=3D#000000 size=3D2>
<DIV>
<DIV>In a message dated 8/17/2005 5:41:14 P.M. Eastern Standard Time,=20
WSCowell at aol.com writes:</DIV>
<BLOCKQUOTE=20
style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><=
FONT=20
  style=3D"BACKGROUND-COLOR: transparent" face=3DArial color=3D#000000 size=
=3D2><FONT=20
  face=3DArial color=3D#000000 size=3D2>
  <DIV>Good grief... there is no suggestion the coil has shorts, and I DID=20
  advise use of an oscilloscope, by far the best test.&nbsp; It would tell=20
  whether the coil is doing its job as a CT.&nbsp; Unless you have design in=
fo=20
  you won't know the design inductance etc.</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>NB we are of course not talking about injectors here, nor ignition=20
  coils.&nbsp; My advice was very sharply focused on the subject matter=20
  presented...&nbsp; It never hurts to address the question asked.&nbsp;=20
  :-)</DIV>
  <DIV>&nbsp;</DIV>
  <DIV>Will C</DIV></FONT><BR></FONT></BLOCKQUOTE></DIV>
<DIV></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;&nbsp; I was not following the thread its just time to end it. th=
e=20
best way to test a coil is with current ramping via a low amps probe and use=
 an=20
oscilloscope to graph the used current wave form. this only comes from years=
 of=20
diagnosing bad inductive coils on engine control systems for 15 yrs. best of=
=20
luck trying to use a voltage wave form. </DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV></FONT></BODY></HTML>

-------------------------------1124319213--

--===============1282169467==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/diy_efi

--===============1282169467==--