Today's Message Index:
----------------------
1. 09:59 AM - Alternator field control configurations (Robert L. Nuckolls, III)
2. 10:57 AM - Re: Bose Headset Replacement Plug ()
3. 11:15 AM - Re: Alternator field control configurations (Charlie England)
4. 11:16 AM - Re: Bose Headset Replacement Plug (Charlie England)
5. 11:29 AM - Re: Alternator field control configurations (Rowland Carson)
6. 11:38 AM - Re: Alternator field control configurations (Robert L. Nuckolls, III)
7. 11:58 AM - Re: Alternator field control configurations (Dan Fritz)
8. 12:15 PM - Re: Alternator field control configurations: Death (Joel Ventura)
9. 04:19 PM - Re: Bose Headset Replacement Plug ()
10. 05:13 PM - Re: Bose Headset Replacement Plug (Charlie England)
11. 05:59 PM - Re: Bose Headset Replacement Plug ()
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| Subject: | Alternator field control configurations |
The terms "A-circuit" and "B-circuit" are holdovers from
the days of wound field DC generators. The terms were adopted
to define how voltage applied to the field terminal from
outside affected the output. They've migrated into modern
'alternator speak'.
The terms A and B-Circuit are applicable whether the
alternator is internally or externally regulated.
A fifth configuration is always externally regulated
because BOTH field leads are brought out.
The attached images describe 5 variations of alternator
field wiring:
Bob . . .
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| Subject: | Bose Headset Replacement Plug |
Whilst doing my research on how to replace the phone plug on my Bose A20
headset, I ran across an article by Matt Dralle who modified a Bose A20
headset to make it to automatically turn on. In the article he took the
Bose electronics all apart and did the modification.and he was able to put
it all back together again so I figure that he must be pretty smart and he
would be the guy to know what color wires to solder to the headphone plug
for my replacement Neutrix NP3X plug.
Does anyone out there know how to get a hold of Matt and can you please ask
him the question:
What color wires (red/black/white/blue/green) are supposed to be soldered on
to the replacement Neutrik NP3X plug's three lugs (tip/center/ring)?
THANKS FOR THE HELP!!!
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of
billhuntersemail@gmail.com
Sent: Tuesday, April 21, 2020 10:35 AM
Subject: AeroElectric-List: Bose Headset Replacement Plug
Greetings Ya'All,
I am still trying to find out what color wire connects to the phone jack
lugs of the Bose A20 "GA wire harness".
>From the recommendations you gave from my last post on this subject I tried
to do a continuity check of the wires to the phone plug so as to determine
what color wires went to the jack lugs however the wires were broken inside.
I then tried to dig out the plastic molded on cable end and trace the wire
colors to the plug however as the molded on plastic was removed it pulled
off the colored insulation from the wires so now I.and my headset.are dead
in the water because I do not know what wire is supposed to go where.
So I need to know what color wires (red/black/white/blue/green) are supposed
to be soldered on to the replacement Neutrik NP3X plug's three lugs
(tip/center/ring) and
If you can help I would be greatly appreciative since Bose wants 300 bucks
for a replacement cable.
THANKS!!!!
Bill
Message 3
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| Subject: | Re: Alternator field control configurations |
On 4/24/2020 11:56 AM, Robert L. Nuckolls, III wrote:
> The terms "A-circuit" and "B-circuit" are holdovers from
> the days of wound field DC generators. The terms were adopted
> to define how voltage applied to the field terminal from
> outside affected the output. They've migrated into modern
> 'alternator speak'.
>
> The terms A and B-Circuit are applicable whether the
> alternator is internally or externally regulated.
> A fifth configuration is always externally regulated
> because BOTH field leads are brought out.
>
> The attached images describe 5 variations of alternator
> field wiring:
>
> Bob . . .
>
For the new guys, the 'internal regulator A-Circuit' is what you're
likely to see in a Nippon Denso (ND) IR alternator.
Q1 in the drawing is, effectively, what keeps us from having positive
control via the 'control input'. If Q1 shorts collector to emitter,
*or*, if anything inside the regulator block fails and applies full DC
voltage to the base of Q1, the alternator 'runs away' in an OV event. I
tried repeatedly to explain this to one of the VAF forum members who is
quite active in the electronic section of the forum and is supposed to
be very knowledgeable, but he adamantly insists that he has full control
over his ND alternator via the control terminal. (Even after posting an
ND block diagram showing exactly what Bob just showed us.)
I know that at least a few of us monitor both this list and the VAF RV
forum. If you're new to electrical/electronic stuff, be very careful
about trusting the E/E stuff you read on VAF. Odds of getting correct
info over there are closer to a dice roll than a coin flip.
Charlie
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| Subject: | Re: Bose Headset Replacement Plug |
Bill,
Did you see my post on how to ID the leads using a 1 1/2 Volt flashlight
battery?
On 4/24/2020 12:52 PM, billhuntersemail@gmail.com wrote:
>
> Whilst doing my research on how to replace the phone plug on my Bose
> A20 headset, I ran across an article by Matt Dralle who modified a
> Bose A20 headset to make it to automatically turn on. In the article
> he took the Bose electronics all apart and did the modificationand he
> was able to put it all back together again so I figure that he must be
> pretty smart and he would be the guy to know what color wires to
> solder to the headphone plug for my replacement Neutrix NP3X plug.
>
> Does anyone out there know how to get a hold of Matt and can you
> please ask him the question:
>
> What color wires (red/black/white/blue/green) are supposed to be
> soldered on to the replacement Neutrik NP3X plugs three lugs
> (tip/center/ring)?
>
> THANKS FOR THE HELP!!!
>
> *From:* owner-aeroelectric-list-server@matronics.com
> <owner-aeroelectric-list-server@matronics.com> *On Behalf Of
> *billhuntersemail@gmail.com
> *Sent:* Tuesday, April 21, 2020 10:35 AM
> *To:* aeroelectric-list@matronics.com
> *Subject:* AeroElectric-List: Bose Headset Replacement Plug
>
> Greetings YaAll,
>
> I am still trying to find out what color wire connects to the phone
> jack lugs of the Bose A20 GA wire harness
>
> From the recommendations you gave from my last post on this subject I
> tried to do a continuity check of the wires to the phone plug so as to
> determine what color wires went to the jack lugs however the wires
> were broken inside. I then tried to dig out the plastic molded on
> cable end and trace the wire colors to the plug however as the molded
> on plastic was removed it pulled off the colored insulation from the
> wires so now Iand my headsetare dead in the water because I do not
> know what wire is supposed to go where.
>
> So I need to know what color wires (red/black/white/blue/green) are
> supposed to be soldered on to the replacement Neutrik NP3X plugs
> three lugs (tip/center/ring) and
>
> If you can help I would be greatly appreciative since Bose wants 300
> bucks for a replacement cable.
>
> THANKS!!!!
>
> Bill
>
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| Subject: | Re: Alternator field control configurations |
On 2020-04-24, at 17:56, Robert L. Nuckolls, III <nuckolls.bob@aeroelectric.com>
wrote:
> The attached images describe 5 variations of alternator
> field wiring:
Bob - for me just an academic point at present, but which of those corresponds
to the Rotax 91X alternator setup, please? It uses an external regulator, the
factory-supplied Ducati or the apparently superior Schicke GR6.
in friendship
Rowland
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| Subject: | Re: Alternator field control configurations |
At 01:23 PM 4/24/2020, you wrote:
><rowlandcarson@gmail.com>
>
>On 2020-04-24, at 17:56, Robert L. Nuckolls, III
><nuckolls.bob@aeroelectric.com> wrote:
>
> > The attached images describe 5 variations of alternator
> > field wiring:
>
>
>Bob - for me just an academic point at present, but which of those
>corresponds to the Rotax 91X alternator setup, please? It uses an
>external regulator, the factory-supplied Ducati or the apparently
>superior Schicke GR6.
>
>in friendship
If your talking about an alternator bolted to
the vacuum pump pad, it will no doubt be a
b-circuit, spline drive, pad mounted device.
The alternator INTERNAL to the Rotax is a
permanent magnet, unregulated AC output
alternator that must be paired with a
rectifier/regulator tailored to the task
That's a whole different subject.
Bob . . .
Message 7
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| Subject: | Re: Alternator field control configurations |
Are the typical ND IR alternators of the Internal Regulator A-Circuit type with
the control input simply bonded to the B-lead? If so, then the mod I've performed
with the non-conductive screw (in the other thread on Alternator Mods) only
gives control in "normal" ops and does not protect from a failed regulator,
meaning a b-lead disconnect would still be required. Correct?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=496019#496019
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| Subject: | Re: Alternator field control configurations: Death |
Bob, please don't die. I don't know what I would do without you.
--Joel
On Fri, Apr 24, 2020 at 1:02 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> The terms "A-circuit" and "B-circuit" are holdovers from
> the days of wound field DC generators. The terms were adopted
> to define how voltage applied to the field terminal from
> outside affected the output. They've migrated into modern
> 'alternator speak'.
>
> The terms A and B-Circuit are applicable whether the
> alternator is internally or externally regulated.
> A fifth configuration is always externally regulated
> because BOTH field leads are brought out.
>
> The attached images describe 5 variations of alternator
> field wiring:
>
> Bob . . .
>
Message 9
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| Subject: | Bose Headset Replacement Plug |
> Did you see my post on how to ID the leads using a 1 1/2 Volt flashlight
battery?
Sorry not when you initially posted it.just read it now.
Would it be safe to assume that the black wire is the ground? I am so close
I do not want try fry anything.
I was hoping to find someone on this forum who has done this repair and knew
the exact colors to place where. I was really surprised that the phone plug
had 5 wires as I just assumed that it would have only three.
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Charlie England
Sent: Friday, April 24, 2020 11:12 AM
Subject: Re: AeroElectric-List: Bose Headset Replacement Plug
Bill,
Did you see my post on how to ID the leads using a 1 1/2 Volt flashlight
battery?
On 4/24/2020 12:52 PM, billhuntersemail@gmail.com
<mailto:billhuntersemail@gmail.com> wrote:
Whilst doing my research on how to replace the phone plug on my Bose A20
headset, I ran across an article by Matt Dralle who modified a Bose A20
headset to make it to automatically turn on. In the article he took the
Bose electronics all apart and did the modification.and he was able to put
it all back together again so I figure that he must be pretty smart and he
would be the guy to know what color wires to solder to the headphone plug
for my replacement Neutrix NP3X plug.
Does anyone out there know how to get a hold of Matt and can you please ask
him the question:
What color wires (red/black/white/blue/green) are supposed to be soldered on
to the replacement Neutrik NP3X plug's three lugs (tip/center/ring)?
THANKS FOR THE HELP!!!
From: owner-aeroelectric-list-server@matronics.com
<mailto:owner-aeroelectric-list-server@matronics.com>
<mailto:owner-aeroelectric-list-server@matronics.com>
<owner-aeroelectric-list-server@matronics.com> On Behalf Of
billhuntersemail@gmail.com <mailto:billhuntersemail@gmail.com>
Sent: Tuesday, April 21, 2020 10:35 AM
Subject: AeroElectric-List: Bose Headset Replacement Plug
Greetings Ya'All,
I am still trying to find out what color wire connects to the phone jack
lugs of the Bose A20 "GA wire harness".
>From the recommendations you gave from my last post on this subject I tried
to do a continuity check of the wires to the phone plug so as to determine
what color wires went to the jack lugs however the wires were broken inside.
I then tried to dig out the plastic molded on cable end and trace the wire
colors to the plug however as the molded on plastic was removed it pulled
off the colored insulation from the wires so now I.and my headset.are dead
in the water because I do not know what wire is supposed to go where.
So I need to know what color wires (red/black/white/blue/green) are supposed
to be soldered on to the replacement Neutrik NP3X plug's three lugs
(tip/center/ring) and
If you can help I would be greatly appreciative since Bose wants 300 bucks
for a replacement cable.
THANKS!!!!
Bill
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Message 10
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| Subject: | Re: Bose Headset Replacement Plug |
To cover all bases, you can power up the headset and check all
combinations of wire pairs for *voltage* before doing anything else.
Black is *likely* to be ground/common, but you just need to check for
yourself.
I agree that it's odd to have 5 wires going to a 3 terminal plug, but
maybe they just used the same cable for everything, & didn't hook up the
extra conductors in the cable for the phones plug. I've seen similar
stuff in things like USB and serial cables.
Does (did...) the headset work in non-noise-cancelling mode if the
batteries are dead or removed? If so, you could do the battery trick
even without it being powered up.
Another option, if you haven't tried it yet, is to take an exacto knife
to the old plug. Cut along the molded housing (not across) a little
depth at a time, trying to peel it away from the conductors before going
a little deeper. You might be able to get past the broken spot in the
wires so you can check wire colors with an ohm meter. I've had good luck
doing this with molded connectors on other products.
Charlie
On 4/24/2020 6:15 PM, billhuntersemail@gmail.com wrote:
>
> > Did you see my post on how to ID the leads using a 1 1/2 Volt
> flashlight battery?
>
> Sorry not when you initially posted itjust read it now.
>
> Would it be safe to assume that the black wire is the ground? I am so
> close I do not want try fry anything.
>
> I was hoping to find someone on this forum who has done this repair
> and knew the exact colors to place where. I was really surprised that
> the phone plug had 5 wires as I just assumed that it would have only
> three.
>
> *From:* owner-aeroelectric-list-server@matronics.com
> <owner-aeroelectric-list-server@matronics.com> *On Behalf Of *Charlie
> England
> *Sent:* Friday, April 24, 2020 11:12 AM
> *To:* aeroelectric-list@matronics.com
> *Subject:* Re: AeroElectric-List: Bose Headset Replacement Plug
>
> Bill,
>
> Did you see my post on how to ID the leads using a 1 1/2 Volt
> flashlight battery?
>
> On 4/24/2020 12:52 PM, billhuntersemail@gmail.com
> <mailto:billhuntersemail@gmail.com> wrote:
>
> Whilst doing my research on how to replace the phone plug on my
> Bose A20 headset, I ran across an article by Matt Dralle who
> modified a Bose A20 headset to make it to automatically turn on.
> In the article he took the Bose electronics all apart and did the
> modificationand he was able to put it all back together again so
> I figure that he must be pretty smart and he would be the guy to
> know what color wires to solder to the headphone plug for my
> replacement Neutrix NP3X plug.
>
> Does anyone out there know how to get a hold of Matt and can you
> please ask him the question:
>
> What color wires (red/black/white/blue/green) are supposed to be
> soldered on to the replacement Neutrik NP3X plugs three lugs
> (tip/center/ring)?
>
> THANKS FOR THE HELP!!!
>
> *From:* owner-aeroelectric-list-server@matronics.com
> <mailto:owner-aeroelectric-list-server@matronics.com>
> <owner-aeroelectric-list-server@matronics.com>
> <mailto:owner-aeroelectric-list-server@matronics.com> *On Behalf
> Of *billhuntersemail@gmail.com <mailto:billhuntersemail@gmail.com>
> *Sent:* Tuesday, April 21, 2020 10:35 AM
> *To:* aeroelectric-list@matronics.com
> <mailto:aeroelectric-list@matronics.com>
> *Subject:* AeroElectric-List: Bose Headset Replacement Plug
>
> Greetings YaAll,
>
> I am still trying to find out what color wire connects to the
> phone jack lugs of the Bose A20 GA wire harness
>
> From the recommendations you gave from my last post on this
> subject I tried to do a continuity check of the wires to the phone
> plug so as to determine what color wires went to the jack lugs
> however the wires were broken inside. I then tried to dig out the
> plastic molded on cable end and trace the wire colors to the plug
> however as the molded on plastic was removed it pulled off the
> colored insulation from the wires so now Iand my headsetare dead
> in the water because I do not know what wire is supposed to go where.
>
> So I need to know what color wires (red/black/white/blue/green)
> are supposed to be soldered on to the replacement Neutrik NP3X
> plugs three lugs (tip/center/ring) and
>
> If you can help I would be greatly appreciative since Bose wants
> 300 bucks for a replacement cable.
>
> THANKS!!!!
>
> Bill
>
> <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon>
>
>
>
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>
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Message 11
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| Subject: | Bose Headset Replacement Plug |
> Does (did...) the headset work in non-noise-cancelling mode if the
batteries are dead or removed? If so, you could do the battery trick even
without it being powered up.
Yes it did so I will try that first.
>Another option, if you haven't tried it yet, is to take an exacto knife to
the old plug. Cut along the molded housing (not across) a little depth at a
time, trying to peel it away from the conductors before going a little
deeper. You might be able to get past the broken spot in the wires so you
can check wire colors with an ohm meter. I've had good luck doing this with
molded connectors on other products.
That is how I screwed it up. I tried to slowly cut down and peel the
plastic back however that plastic was molded on very tight and as I peeled
away the wire insulation came off and all I found was three wire conductors
connected to the three rings of the plug.
Thanks Charlie
From: owner-aeroelectric-list-server@matronics.com
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Charlie England
Sent: Friday, April 24, 2020 5:09 PM
Subject: Re: AeroElectric-List: Bose Headset Replacement Plug
To cover all bases, you can power up the headset and check all combinations
of wire pairs for *voltage* before doing anything else. Black is *likely* to
be ground/common, but you just need to check for yourself.
I agree that it's odd to have 5 wires going to a 3 terminal plug, but maybe
they just used the same cable for everything, & didn't hook up the extra
conductors in the cable for the phones plug. I've seen similar stuff in
things like USB and serial cables.
Does (did...) the headset work in non-noise-cancelling mode if the batteries
are dead or removed? If so, you could do the battery trick even without it
being powered up.
Another option, if you haven't tried it yet, is to take an exacto knife to
the old plug. Cut along the molded housing (not across) a little depth at a
time, trying to peel it away from the conductors before going a little
deeper. You might be able to get past the broken spot in the wires so you
can check wire colors with an ohm meter. I've had good luck doing this with
molded connectors on other products.
Charlie
On 4/24/2020 6:15 PM, billhuntersemail@gmail.com
<mailto:billhuntersemail@gmail.com> wrote:
> Did you see my post on how to ID the leads using a 1 1/2 Volt flashlight
battery?
Sorry not when you initially posted it.just read it now.
Would it be safe to assume that the black wire is the ground? I am so close
I do not want try fry anything.
I was hoping to find someone on this forum who has done this repair and knew
the exact colors to place where. I was really surprised that the phone plug
had 5 wires as I just assumed that it would have only three.
From: owner-aeroelectric-list-server@matronics.com
<mailto:owner-aeroelectric-list-server@matronics.com>
<mailto:owner-aeroelectric-list-server@matronics.com>
<owner-aeroelectric-list-server@matronics.com> On Behalf Of Charlie England
Sent: Friday, April 24, 2020 11:12 AM
Subject: Re: AeroElectric-List: Bose Headset Replacement Plug
Bill,
Did you see my post on how to ID the leads using a 1 1/2 Volt flashlight
battery?
On 4/24/2020 12:52 PM, billhuntersemail@gmail.com
<mailto:billhuntersemail@gmail.com> wrote:
Whilst doing my research on how to replace the phone plug on my Bose A20
headset, I ran across an article by Matt Dralle who modified a Bose A20
headset to make it to automatically turn on. In the article he took the
Bose electronics all apart and did the modification.and he was able to put
it all back together again so I figure that he must be pretty smart and he
would be the guy to know what color wires to solder to the headphone plug
for my replacement Neutrix NP3X plug.
Does anyone out there know how to get a hold of Matt and can you please ask
him the question:
What color wires (red/black/white/blue/green) are supposed to be soldered on
to the replacement Neutrik NP3X plug's three lugs (tip/center/ring)?
THANKS FOR THE HELP!!!
From: owner-aeroelectric-list-server@matronics.com
<mailto:owner-aeroelectric-list-server@matronics.com>
<mailto:owner-aeroelectric-list-server@matronics.com>
<owner-aeroelectric-list-server@matronics.com> On Behalf Of
billhuntersemail@gmail.com <mailto:billhuntersemail@gmail.com>
Sent: Tuesday, April 21, 2020 10:35 AM
Subject: AeroElectric-List: Bose Headset Replacement Plug
Greetings Ya'All,
I am still trying to find out what color wire connects to the phone jack
lugs of the Bose A20 "GA wire harness".
>From the recommendations you gave from my last post on this subject I tried
to do a continuity check of the wires to the phone plug so as to determine
what color wires went to the jack lugs however the wires were broken inside.
I then tried to dig out the plastic molded on cable end and trace the wire
colors to the plug however as the molded on plastic was removed it pulled
off the colored insulation from the wires so now I.and my headset.are dead
in the water because I do not know what wire is supposed to go where.
So I need to know what color wires (red/black/white/blue/green) are supposed
to be soldered on to the replacement Neutrik NP3X plug's three lugs
(tip/center/ring) and
If you can help I would be greatly appreciative since Bose wants 300 bucks
for a replacement cable.
THANKS!!!!
Bill
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