If the feedback winding is open, winding which isn't tuned, exact guage doesn't matter. Turns are more important. Resistance is given for a quick check with ohm meter. Thin wire will have higher resistance the larger.
If a tuned winding is replaced guage, number of turns, and how coil is wound will be important for dial tracking.
Norm
:Hello all! I have a Canadian Westinghouse model 511 and you can see the video for it on my Youtube channel: "Thermionman1970" /"Westinghouse 511 has open coil....".Anyways the oscillator coil is open and this connects to the 6A8 tube .It could be broken near the leads maybe ....Anyways I have some magnet wire but it may be a different guage and because of that the resistance (ohms per foot ) may not be the same and physical size, but does it really matter as long as the number of turns is the same for the two windings? Or does the guage have to be EXACT?? I know I can get a replacement coilfrom Antique Electronic Supply, and probably find out what guage the wire is and maybe order that guage, but I still want the knowledge on how to rewind coils etc.Also if the frequency of the new wound coils are off a bit ,can the IF ransformers be adjusted to compensate for this or not really?Thanks for any info!
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:Chris
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: If the feedback winding is open, winding which isn't tuned, exact guage doesn't matter. Turns are more important. Resistance is given for a quick check with ohm meter. Thin wire will have higher resistance the larger.
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: If a tuned winding is replaced guage, number of turns, and how coil is wound will be important for dial tracking.
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:Norm
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::Hello all! I have a Canadian Westinghouse model 511 and you can see the video for it on my Youtube channel: "Thermionman1970" /"Westinghouse 511 has open coil....".Anyways the oscillator coil is open and this connects to the 6A8 tube .It could be broken near the leads maybe ....Anyways I have some magnet wire but it may be a different guage and because of that the resistance (ohms per foot ) may not be the same and physical size, but does it really matter as long as the number of turns is the same for the two windings? Or does the guage have to be EXACT?? I know I can get a replacement coilfrom Antique Electronic Supply, and probably find out what guage the wire is and maybe order that guage, but I still want the knowledge on how to rewind coils etc.Also if the frequency of the new wound coils are off a bit ,can the IF ransformers be adjusted to compensate for this or not really?Thanks for any info!
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: : : :  : : : : : : : :Sir Chris. . . . . : : :Tracing the coil terminals of "mystery coil" down to their terminations at the tube and circuitry should confirm its identity when compared to the schematic. : : :That particular one doesn't just have a few mere turns for a tickler winding, that one shown is involving many turns for both coils. : : :Get out your ohmmeter and confirm which connections are going to which windings. :That looks like old single cotton covered wire about 32-37 gauge. : : :To make windings show up better take an artist brush and flood the windings with common paint thinner / mineral spirits and then heat up a bit with a blow drier. :Then you zero in on which of the two terminals are going to the END of the two windings. :The most suspect point for a break is from the coil to the terminal, but is the break is near the end of a winding, you can take off a turn or two to get wire slack to re do the connection. : : :If the open happens to be at the START of a winding . . . thats a bit more problematic. : : :Your shown ground of the HV secondary of the HV transformer i would have suspicioned to have been going into the MUTER power strip resistor over to the side of the chassis. : : :Can U get me a schematic of that unit for my break down and evaluation ? : : : : : :To check ohmmic contimuity from a terminal to the wiring start / finish : :At the coil proper, plant one probe at the wire terminal and with thumb/fore-finger hold a a single edge razor blade into holding contact to the other ohms lead. : : : :Get as close to the wire under a coil winding and make multiple easy lateral scrapes to see if continuity is remaining good up to your very last micro inch that you can get to that tested wire, until it passes under a winding. : : : : : : : : : : :73's de Edd :Thankyou Edd for the information!I thought the cotton covered wire might actually be a much higher gauge like 42 etc...The schematic for this radio is here on Nostalgiaair under Canadian Westinghouse model 511 A. : :  : |
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::Chris
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:: If the feedback winding is open, winding which isn't tuned, exact guage doesn't matter. Turns are more important. Resistance is given for a quick check with ohm meter. Thin wire will have higher resistance the larger.
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:: If a tuned winding is replaced guage, number of turns, and how coil is wound will be important for dial tracking.
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::Norm
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:::Hello all! I have a Canadian Westinghouse model 511 and you can see the video for it on my Youtube channel: "Thermionman1970" /"Westinghouse 511 has open coil....".Anyways the oscillator coil is open and this connects to the 6A8 tube .It could be broken near the leads maybe ....Anyways I have some magnet wire but it may be a different guage and because of that the resistance (ohms per foot ) may not be the same and physical size, but does it really matter as long as the number of turns is the same for the two windings? Or does the guage have to be EXACT?? I know I can get a replacement coilfrom Antique Electronic Supply, and probably find out what guage the wire is and maybe order that guage, but I still want the knowledge on how to rewind coils etc.Also if the frequency of the new wound coils are off a bit ,can the IF ransformers be adjusted to compensate for this or not really?Thanks for any info!
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: If the feedback winding is open, winding which isn't tuned, exact guage doesn't matter. Turns are more important. Resistance is given for a quick check with ohm meter. Thin wire will have higher resistance the larger.
:
: If a tuned winding is replaced guage, number of turns, and how coil is wound will be important for dial tracking.
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:Norm
:T
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::Hello all! I have a Canadian Westinghouse model 511 and you can see the video for it on my Youtube channel: "Thermionman1970" /"Westinghouse 511 has open coil....".Anyways the oscillator coil is open and this connects to the 6A8 tube .It could be broken near the leads maybe ....Anyways I have some magnet wire but it may be a different guage and because of that the resistance (ohms per foot ) may not be the same and physical size, but does it really matter as long as the number of turns is the same for the two windings? Or does the guage have to be EXACT?? I know I can get a replacement coilfrom Antique Electronic Supply, and probably find out what guage the wire is and maybe order that guage, but I still want the knowledge on how to rewind coils etc.Also if the frequency of the new wound coils are off a bit ,can the IF ransformers be adjusted to compensate for this or not really?Thanks for any info!
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: If the feedback winding is open, winding which isn't tuned, exact guage doesn't matter. Turns are more important. Resistance is given for a quick check with ohm meter. Thin wire will have higher resistance the larger.
:
: If a tuned winding is replaced guage, number of turns, and how coil is wound will be important for dial tracking.
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:Norm
:Thankyou Norm! That is really interesting about the dial tracking
::Hello all! I have a Canadian Westinghouse model 511 and you can see the video for it on my Youtube channel: "Thermionman1970" /"Westinghouse 511 has open coil....".Anyways the oscillator coil is open and this connects to the 6A8 tube .It could be broken near the leads maybe ....Anyways I have some magnet wire but it may be a different guage and because of that the resistance (ohms per foot ) may not be the same and physical size, but does it really matter as long as the number of turns is the same for the two windings? Or does the guage have to be EXACT?? I know I can get a replacement coilfrom Antique Electronic Supply, and probably find out what guage the wire is and maybe order that guage, but I still want the knowledge on how to rewind coils etc.Also if the frequency of the new wound coils are off a bit ,can the IF ransformers be adjusted to compensate for this or not really?Thanks for any info!
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