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Old June 9th 07, 01:55 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: May 2007
Posts: 6
Default Stewart-Warner reactance dimmer

John,

I did post another wiring illustration from the schematic page on the
binaries. Please have a look and see whether it clarifies anything. I will
post a photo of the x-former in place, though I doubt it's of much help.
Thanks.

Dave

"John Byrns" wrote in message
...
In article 3Njai.154612$_c5.5197@attbi_s22,
TUFF (John Goller, k9uwa) wrote:

In article ,
says...

Hi John ... well you found him ... actually a friend of mine had them
wound ... for his E-155 and my E-155 and a few spare parts ... and yes
my buddy Kim Herron has a couple cores rewound that are left... he had
the transformer company in Grand Rapids, Michigan rewind them for us..

and yes its a 3 winding arrangement... nothing like a normal
transformer..
so do you have your iron core?


Hi John,

It's not my radio, Randy and I were simply discussing over on
alt.binaries.pictures.radio how the "Stewart-Warner reactance dimmer"
might actually work. This discussion is the result of a post by "Dave
Burson" on alt.binaries.pictures.radio who has a S-W model R-1822 with
an open primary on the reactance control "transformer". I cross posted
the discussion here because I remembered that someone here had talked
about fixing a similar problem on a GE set before. Dave hasn't
responded yet with any information on the physical construction of the
S-W "transformer", whether it's construction is similar to the GE
"transformer" or is different.


Regards,

John Byrns

--
Surf my web pages at,
http://fmamradios.com/



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Old June 9th 07, 02:37 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: Apr 2007
Posts: 61
Default Stewart-Warner reactance dimmer

Hi Dave,

Thanks for posting the photo, it makes clear that all three windings are
on the center leg of an E-core unlike the General Electric circuit. It
doesn't make it clear if the two "secondary" windings are connected in a
"bucking" configuration as the schematic implies, or in an "aiding"
configuration. With the open primary what is the voltage across the
light, is it the full heater supply voltage, approximately 6.3 volts, or
is it noticeably lower? This information would help explain how the two
windings are connected and how the circuit works.


Regards,

John Byrns


In article ,
"Dave Burson" wrote:

John,

I did post another wiring illustration from the schematic page on the
binaries. Please have a look and see whether it clarifies anything. I will
post a photo of the x-former in place, though I doubt it's of much help.
Thanks.

Dave

"John Byrns" wrote in message
...
In article 3Njai.154612$_c5.5197@attbi_s22,
TUFF (John Goller, k9uwa) wrote:

In article ,
says...

Hi John ... well you found him ... actually a friend of mine had them
wound ... for his E-155 and my E-155 and a few spare parts ... and yes
my buddy Kim Herron has a couple cores rewound that are left... he had
the transformer company in Grand Rapids, Michigan rewind them for us..

and yes its a 3 winding arrangement... nothing like a normal
transformer..
so do you have your iron core?


Hi John,

It's not my radio, Randy and I were simply discussing over on
alt.binaries.pictures.radio how the "Stewart-Warner reactance dimmer"
might actually work. This discussion is the result of a post by "Dave
Burson" on alt.binaries.pictures.radio who has a S-W model R-1822 with
an open primary on the reactance control "transformer". I cross posted
the discussion here because I remembered that someone here had talked
about fixing a similar problem on a GE set before. Dave hasn't
responded yet with any information on the physical construction of the
S-W "transformer", whether it's construction is similar to the GE
"transformer" or is different.


Regards,

John Byrns

--
Surf my web pages at,
http://fmamradios.com/


--
Surf my web pages at, http://fmamradios.com/
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Old June 9th 07, 03:21 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: Apr 2007
Posts: 88
Default Stewart-Warner reactance dimmer

John Byrns wrote:

Hi Dave,

Thanks for posting the photo, it makes clear that all three windings are
on the center leg of an E-core unlike the General Electric circuit.


I don't know John, there is something sticking out on both the left and
right ends - like there were a very few winding on each of the outer
legs - normally the shell encloses everything - in this one - there is
something definitely sticking out... or at least it looks like it - Dave
- I know it'd probably be a PITA - but is would it be too much to ask to
try and get a side shot (from north or south as this photo is oriented)?

best regards...
--
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com


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Old June 9th 07, 04:00 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: Apr 2007
Posts: 61
Default Stewart-Warner reactance dimmer

In article Agnai.22480$dy1.6263@bigfe9,
Randy or Sherry Guttery wrote:

John Byrns wrote:

Hi Dave,

Thanks for posting the photo, it makes clear that all three windings are
on the center leg of an E-core unlike the General Electric circuit.


I don't know John, there is something sticking out on both the left and
right ends - like there were a very few winding on each of the outer
legs - normally the shell encloses everything - in this one - there is
something definitely sticking out... or at least it looks like it - Dave
- I know it'd probably be a PITA - but is would it be too much to ask to
try and get a side shot (from north or south as this photo is oriented)?


I think you are correct, looking closer at the photo I see what looks
like it may be the side windings.


Regards,

John Byrns

--
Surf my web pages at, http://fmamradios.com/
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Old June 9th 07, 04:37 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: May 2007
Posts: 6
Default Stewart-Warner reactance dimmer

The only PITA is that I've left the chassis at the house of a friend who has
a signal generator (and who knows how to use it). I'll try to get over
there tomorrow. If I can't get a meaningful photo, I can at least sketch
the details. Thanks for the continued interest.

Dave


"Randy or Sherry Guttery" wrote in message
news:Agnai.22480$dy1.6263@bigfe9...
John Byrns wrote:

Hi Dave,

Thanks for posting the photo, it makes clear that all three windings are
on the center leg of an E-core unlike the General Electric circuit.


I don't know John, there is something sticking out on both the left and
right ends - like there were a very few winding on each of the outer
legs - normally the shell encloses everything - in this one - there is
something definitely sticking out... or at least it looks like it - Dave -
I know it'd probably be a PITA - but is would it be too much to ask to try
and get a side shot (from north or south as this photo is oriented)?

best regards...
--
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com



  #8   Report Post  
Old June 9th 07, 05:01 AM posted to rec.antiques.radio+phono,alt.binaries.pictures.radio
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First recorded activity by RadioBanter: Apr 2007
Posts: 61
Default Stewart-Warner reactance dimmer

Hi Dave,

The photo just helps explain how it works, you still have the problem of
fixing the open primary of the "transformer". To fix it you will need
to either have the primary rewound if the break is inside the winding,
or if you are lucky the wire may simply be broken where it attaches to
one of the terminal lugs and you may be able to reattach it.


Regards,

John Byrns


In article ,
"Dave Burson" wrote:

The only PITA is that I've left the chassis at the house of a friend who has
a signal generator (and who knows how to use it). I'll try to get over
there tomorrow. If I can't get a meaningful photo, I can at least sketch
the details. Thanks for the continued interest.

Dave


"Randy or Sherry Guttery" wrote in message
news:Agnai.22480$dy1.6263@bigfe9...
John Byrns wrote:

Hi Dave,

Thanks for posting the photo, it makes clear that all three windings are
on the center leg of an E-core unlike the General Electric circuit.


I don't know John, there is something sticking out on both the left and
right ends - like there were a very few winding on each of the outer
legs - normally the shell encloses everything - in this one - there is
something definitely sticking out... or at least it looks like it - Dave -
I know it'd probably be a PITA - but is would it be too much to ask to try
and get a side shot (from north or south as this photo is oriented)?

best regards...
--
randy guttery

A Tender Tale - a page dedicated to those Ships and Crews
so vital to the United States Silent Service:
http://tendertale.com


--
Surf my web pages at, http://fmamradios.com/
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