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#3
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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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#4
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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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#5
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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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#6
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In article Agnai.22480$dy1.6263@bigfe9,
Randy or Sherry Guttery wrote: John Byrns wrote: Hi Dave, Thanks for posting the photo, it makes clear that all three windings are on the center leg of an E-core unlike the General Electric circuit. I don't know John, there is something sticking out on both the left and right ends - like there were a very few winding on each of the outer legs - normally the shell encloses everything - in this one - there is something definitely sticking out... or at least it looks like it - Dave - I know it'd probably be a PITA - but is would it be too much to ask to try and get a side shot (from north or south as this photo is oriented)? I think you are correct, looking closer at the photo I see what looks like it may be the side windings. Regards, John Byrns -- Surf my web pages at, http://fmamradios.com/ |
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#7
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The only PITA is that I've left the chassis at the house of a friend who has
a signal generator (and who knows how to use it). I'll try to get over there tomorrow. If I can't get a meaningful photo, I can at least sketch the details. Thanks for the continued interest. Dave "Randy or Sherry Guttery" wrote in message news:Agnai.22480$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 |
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#8
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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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