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bbradburry(at)allvantage.
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 Posted: Tue Mar 21, 2006 7:09 am Post subject: Vans type alternator |
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I just bought an ND alternator, Lester #14684. This is the same
alternator supplied with Vans kits. The regulator used in the
alternator is the IN219. The terminal identification is D-IG-L.
I was looking into how to control the field on this alternator and I
have the following questions which I hope someone can answer.
The repair circuit is TRI219. Comments are: Ignition activated. Load
Dump protected, L-Terminal does NOT drive a choke. Overvoltage detect
point is 17.0 V.
Does this mean that the alternator has its own OV protection?
Does this mean that the B&C OV module wired into the IG will control the
field?
Any comments on how to wire this alternator would be greatly
appreciated.
Thanks,
Bill Bradburry
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nuckollsr(at)cox.net
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| Posted: Wed Mar 22, 2006 7:48 am Post subject: Vans type alternator |
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At 10:08 AM 3/21/2006 -0500, you wrote:
| Quote: |
<bbradburry(at)allvantage.com>
I just bought an ND alternator, Lester #14684. This is the same
alternator supplied with Vans kits. The regulator used in the
alternator is the IN219. The terminal identification is D-IG-L.
I was looking into how to control the field on this alternator and I
have the following questions which I hope someone can answer.
The repair circuit is TRI219. Comments are: Ignition activated. Load
Dump protected, L-Terminal does NOT drive a choke.
|
. . . don't understand this . . . something to do
with electrically heated choke on carburetor?
| Quote: | Overvoltage detect point is 17.0 V.
Does this mean that the alternator has its own OV protection?
|
Probably not. The upcoming publication of the MC33092 internal
regulator chip study will show that there is no 'protection"
offered by this particular chip. The lv, ov sensor circuits
only drive the warning light.
From an aviation perspective, 'protection' means active
override of the effects of a hazardous event. To simply
light a bulb is 'annunciation' or 'notification' and not
'protection'.
Of course, to really know if any particular product truly
offers what advertisements claim, one must dissect the
schematics, block diagrams, etc. Which is what I've done
with the MC33092. Now, the alternator you have may indeed
offer what it advertises . . . but without seeing the detailed
data (or testing it on the bench) you cannot know for sure.
Further, I nor anyone else will be able to advise you from a
position of knowledge.
| Quote: | Does this mean that the B&C OV module wired into the IG will control the
field?
|
Probably not.
| Quote: | Any comments on how to wire this alternator would be greatly
appreciated.
|
Wire it per Van's recommendations . . . for now. The next greatest
thing is in the works. I've finished one of the test tools
needed to quantify design parameters for achieving absolute,
any-time, any-conditions, no-hazard control over an internally
regulated alternator. Folks with an interest in having this
capability will be able to take advantage of it. Folks not
interested can wire per Van's suggestions. It will be easy to
add to a Van's-style installation.
Bob . . .
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klehman(at)albedo.net
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| Posted: Wed Mar 22, 2006 6:34 pm Post subject: Vans type alternator |
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Yup.
Some carbed vehicles used to feed the electrically heated automatic
choke from the L terminal of the alternator. This alternator won't
supply sufficent current on the L lead for that purpose.
Ken
Robert L. Nuckolls, III wrote:
| Quote: |
At 10:08 AM 3/21/2006 -0500, you wrote:
>
><bbradburry(at)allvantage.com>
>
>I just bought an ND alternator, Lester #14684. This is the same
>alternator supplied with Vans kits. The regulator used in the
>alternator is the IN219. The terminal identification is D-IG-L.
>I was looking into how to control the field on this alternator and I
>have the following questions which I hope someone can answer.
>The repair circuit is TRI219. Comments are: Ignition activated. Load
>Dump protected, L-Terminal does NOT drive a choke.
>
>
. . . don't understand this . . . something to do
with electrically heated choke on carburetor?
|
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bbradburry(at)allvantage.
Guest
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| Posted: Thu Mar 23, 2006 5:32 am Post subject: Vans Type Alternator |
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Snip...
| Quote: | I just bought an ND alternator, Lester #14684. This is the same
alternator supplied with Vans kits. The regulator used in the
alternator is the IN219. The terminal identification is D-IG-L.
I was looking into how to control the field on this alternator and I
have the following questions which I hope someone can answer.
The repair circuit is TRI219. Comments are: Ignition activated. Load
Dump protected, L-Terminal does NOT drive a choke.
|
. . . don't understand this . . . something to do
with electrically heated choke on carburetor?
Snip...
Now I am really confused. I assumed that this was a reference to an
electric device called a choke and was wondering how that played into
alternators.
Bill Bradburry
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bbradburry(at)allvantage.
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| Posted: Thu Mar 23, 2006 5:44 am Post subject: Vans Type Alternator |
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Whoops!! I should have read on down the list before replying!!
Thanks, Ken
Bill Bradburry
Yup.
Some carbed vehicles used to feed the electrically heated automatic
choke from the L terminal of the alternator. This alternator won't
supply sufficent current on the L lead for that purpose.
Ken
---
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nuckollsr(at)cox.net
Guest
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| Posted: Thu Mar 23, 2006 6:25 am Post subject: Vans Type Alternator |
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At 08:28 AM 3/23/2006 -0500, you wrote:
| Quote: |
<bbradburry(at)allvantage.com>
Snip...
>I just bought an ND alternator, Lester #14684. This is the same
>alternator supplied with Vans kits. The regulator used in the
>alternator is the IN219. The terminal identification is D-IG-L.
>I was looking into how to control the field on this alternator and I
>have the following questions which I hope someone can answer.
>The repair circuit is TRI219. Comments are: Ignition activated. Load
>Dump protected, L-Terminal does NOT drive a choke.
. . . don't understand this . . . something to do
with electrically heated choke on carburetor?
Snip...
Now I am really confused. I assumed that this was a reference to an
electric device called a choke and was wondering how that played into
alternators.
|
Yeah, there is an electrical device called a "choke" or more
properly, an "inductor". However, there are chokes on carburetors,
shotguns and no doubt many more in other venues.
The terminal capable of bringing out the kind of energy necessary
for heated choke operation was the center tap of a wye-wound
alternator and was usually labeled 'aux'. One could get 1/2
system voltage at mucho current from this terminal. Of course
it was only present when the engine was running and the alternator
performing normally. It made an ideal power source for gradual
warming of the bi-metal spring that closed the choke in cold
weather to keep the engine running reasonably smooth until
it got warmed up.
Haven't seen an 'aux' terminal on a new alternator in many
moons. Since the advent of electronically controlled fuel
injection, the need for them in cars has faded away.
Bob . . .
< What is so wonderful about scientific truth...is that >
< the authority which determines whether there can be >
< debate or not does not reside in some fraternity of >
< scientists; nor is it divine. The authority rests >
< with experiment. >
< --Lawrence M. Krauss >
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brian
Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA
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| Posted: Thu Mar 23, 2006 7:51 am Post subject: Vans Type Alternator |
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Bill Bradburry wrote:
| Quote: |
Snip...
> I just bought an ND alternator, Lester #14684. This is the same
> alternator supplied with Vans kits. The regulator used in the
> alternator is the IN219. The terminal identification is D-IG-L.
> I was looking into how to control the field on this alternator and I
> have the following questions which I hope someone can answer.
> The repair circuit is TRI219. Comments are: Ignition activated. Load
> Dump protected, L-Terminal does NOT drive a choke.
. . . don't understand this . . . something to do
with electrically heated choke on carburetor?
Snip...
Now I am really confused. I assumed that this was a reference to an
electric device called a choke and was wondering how that played into
alternators.
|
Ha, this is funny.
Many cars have an automatic choke that comes on when the car is cold and
goes off when it warms up. Some of these are electrical and use the
stator output of the alternator to drive the heating element in the
choke on the carb. The logic is, if the alternator is not turning, the
engine is not running and the choke should not open. When you start the
car and the alternator comes on-line, the choke starts to open. It works
pretty well ...
.. and has absolutely nothing to do with airplanes. 
--
Brian Lloyd 361 Catterline Way
brian-yak at lloyd dot com Folsom, CA 95630
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery
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_________________
Brian Lloyd
brian-yak at lloyd dot com
+1.916.367.2131 (voice) +1.270.912.0788 (fax)
I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery |
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