[Vwdiesel] My Hmmm circuit

[Mike & Coreen Smith]

I can't see how this would work Mark.
Unless I am being thick, (!) Which is possible.  My life has been turned
upsidedown this week
so I'm not thinking straight.....but this is a diesel forum, so I'll stick
to that.
Are you able to make a crappy diagram from windows paint, save it as a .jpg
and email it to me please?
please cc: Michael.Smith at rvh.nb.ca as that's the account I use while at
work.

I had it all breadboarded out in front of me today and no matter what I
tried, it didn't seem
to work.

Mike

Mike, Coreen & Corey Smith
699 Rte 616 Keswick Ridge
NB
Canada
E6L 1T1
----- Original Message -----
From: "Mark Shepherd" <mark at shepher.fsnet.co.uk>
To: <vwdiesel at vwfans.com>
Sent: Wednesday, December 22, 2004 6:58 PM
Subject: [Vwdiesel] My Hmmm circuit


> Mike;
> The way this circuit would work  (I think) would be for the
> LEDs to light  AFTER glowplugs turned off.
> A failure to light would mean o/c glowplug. the inline
> diodes block cross circuiting to 'working glowplugs.
>
> The warning circuit would be +ve switched supply, LED,
> ballast resistor, 1mm wire attached to glowplug,
>  through glowplug to engine, earth strap and battery -ve
>
> Mike try removing supply from your mock glow plug but
> simulating above circuit then o/c 'glowplug'
> Does your test circuit fail because of higher resistance of
> light bulb comparedwith 1 ohm of GP?
>
> I've got through about 12 glowplugs on this Quantum ...
> All have failed open circuit none have been burnt externally
> :-(
> 1 glow plug restarted after I threw it on the floor :o)
>
> Miser
>
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