Andy
:Andy
Do you want an exact replacement, or a transformer that will match the output tube(s)? Look back earlier this month, there is a site mentioned that has transformers for everything, it seems. I couldn't find a schematic here, what does your radio use in the audio output stage for tube(s)?
Lewis
::Andy
:
:Do you want an exact replacement, or a transformer that will match the output tube(s)? Look back earlier this month, there is a site mentioned that has transformers for everything, it seems. I couldn't find a schematic here, what does your radio use in the audio output stage for tube(s)?
:Lewis
Back again.....try this site:
http://www.oldradioparts.com/2a23dfl.txt
you might need to tweak a little on the address, but I think you will find your transformer here.
Lewis
::Andy
:
:Do you want an exact replacement, or a transformer that will match the output tube(s)? Look back earlier this month, there is a site mentioned that has transformers for everything, it seems. I couldn't find a schematic here, what does your radio use in the audio output stage for tube(s)?
:Lewis
:
Hi Lewis; I don't necessarily want an exact replacement. The rectifier is a 35Z5 and the output is a 35L6. I'm sorry; I forgot to mention that this is a Canadian made Stromberg-Carlson. I looked up the previous posting and found the site POTP which I looked up. The problem is I really don't know what I'm looking for; if that makes any sense to you. The book I have says the following when ordering replacement output transformers; "you must know something about the radio to make the proper replacement, because you have to know the characteristics of the output tubes and should know the voice coil impedance of the loudspeaker" What do they mean when they say "the proper characteristics of the output tubes" and where do I find "the voice coil impedance of the loudspeaker" ?? As you have probably noticed I'm still in the learning stages, ha, ha. Thanks for taking your valuable time to help me with this,Lewis.
Andy
--------------------------
Your radio uses a 35L6 output tube right?...Okay.. according to the info I listed below for you... your tube requires about a 2,000 ohm impedance output transformer.
So that means if you are using a 4-ohm speaker that you will need to use a transformer with a turns ratio of about 25:1
The article below explains exactly why and how to determine that....easily!!!!
But as a short-cut ...when you do go to POTP www.oldradioparts.com you will see that often Gary will note that certain output transformers he has there are good for certain type output tubes... like 50L6, 35L6... or 6v6, 6L6, 42, 41 etc.
Here is the PERFECT article that will clearly explain and show you EASILY and clearly how to figure out or determine EXACTLY the right output transformer.
I love this article... because it cleared up all the mysterious questions I ever had about output transformer calculations....lol
There is a chart at the end of the article showing which output tubes require which impedances.
Read it a few times and believe me it will start to sink in cause it is EASY..
http://www.radioremembered.org/outimp.htm
Good luck,
let's hear how you make out,
Peter
:Your radio uses a 35L6 output tube right?...Okay.. according to the info I listed below for you... your tube requires about a 2,000 ohm impedance output transformer.
:
:So that means if you are using a 4-ohm speaker that you will need to use a transformer with a turns ratio of about 25:1
:
:The article below explains exactly why and how to determine that....easily!!!!
:
:But as a short-cut ...when you do go to POTP www.oldradioparts.com you will see that often Gary will note that certain output transformers he has there are good for certain type output tubes... like 50L6, 35L6... or 6v6, 6L6, 42, 41 etc.
:
:Here is the PERFECT article that will clearly explain and show you EASILY and clearly how to figure out or determine EXACTLY the right output transformer.
:
:I love this article... because it cleared up all the mysterious questions I ever had about output transformer calculations....lol
:
:There is a chart at the end of the article showing which output tubes require which impedances.
:
:Read it a few times and believe me it will start to sink in cause it is EASY..
:
:http://www.radioremembered.org/outimp.htm
:
:Good luck,
:let's hear how you make out,
:Peter
Peter; Thanks very much for the info. I should be able to locate the proper transformer with the help of this article !!
Andy
::Your radio uses a 35L6 output tube right?...Okay.. according to the info I listed below for you... your tube requires about a 2,000 ohm impedance output transformer.
::
::So that means if you are using a 4-ohm speaker that you will need to use a transformer with a turns ratio of about 25:1
::
:
:
:
:
:
::The article below explains exactly why and how to determine that....easily!!!!
::
::But as a short-cut ...when you do go to POTP www.oldradioparts.com you will see that often Gary will note that certain output transformers he has there are good for certain type output tubes... like 50L6, 35L6... or 6v6, 6L6, 42, 41 etc.
::
::Here is the PERFECT article that will clearly explain and show you EASILY and clearly how to figure out or determine EXACTLY the right output transformer.
::
::I love this article... because it cleared up all the mysterious questions I ever had about output transformer calculations....lol
::
::There is a chart at the end of the article showing which output tubes require which impedances.
::
::Read it a few times and believe me it will start to sink in cause it is EASY..
::
::http://www.radioremembered.org/outimp.htm
::
::Good luck,
::let's hear how you make out,
::Peter
:
:Peter; Thanks very much for the info. I should be able to locate the proper transformer with the help of this article !!
:Andy
Hi again Peter; I wanted to get back to you to let you know how I'm making out with my transformer problem.
The original transformer had 2 wires from the primary; a black wire which was connected to the plate(pin 3) of the 35L6 output tube,and a red wire connected to pin 4 of the 35Z5 rectifier tube. The secondary had a black and a green wire connected to the loudspeaker.
I pulled an output transformer from a junker RCA 9X-561 chassis. It had been connected to a 50L6 output tube so it matched the 2000 ohm impedance requirement and phyically it fit almost perfectly into the space where the old transformer fit. I connected the green and black wires from the secondary to the loudspeaker. The problem I then had was that there was an orange,a brown and a blue wire from the primary winding on the replacement transformer. I connected the orange wire to pin 4 of the rectifier tube and I connected the brown wire to pin 3 of output tube. I left the blue wire disconnected. I powered up the set through an isolation transformer and lo and behold the radio picked up a station. I was more than happy to finally get some sound. I checked the voltage on pin 3 of the 35L6 output tube and measured 98V whereas prior to replacing the transformer I had a reading of 2.6V.
Even though there is sound it is not overly loud when I have the volume cranked up.
What should I do with the blue lead from the primary and has the low volume got something to do with the fact that the blue lead is not connected to anything? From what I have read this my be a humbucking wire???
Thanks again for any help you can give me.
Andy
----------------------------------
Heh..Heh..Heh... what were the chances , and you lucked out and left the plate lead of the transformer floating and used the humbucking tap and the B+ part of the
RCA sub transformer . Here is a thumbnail of the RCA circuitry below, and if your Stromberger- Carlsonator unit only uses a single untapped winding on its original transformer, you would want the subbed in RCA xformers blue wire going to the output tubes plate and its red/or/orange wire to the 35Z5 B+ source and you have its secondary windings wires being correct, with the free brown wire being unused and left to be taped up.
That S-C output transformers "Black" primary lead probably was dark blue many eons back, as that is the typically normal color coding for a plate connection of an output transformer transformer.
Thassit.
73's de Edd
:::Andy:
:::Your radio uses a 35L6 output tube right?...Okay.. according to the info I listed below for you... your tube requires about a 2,000 ohm impedance output transformer.
:::
:::So that means if you are using a 4-ohm speaker that you will need to use a transformer with a turns ratio of about 25:1
:::
::
::
::
::
::
:::The article below explains exactly why and how to determine that....easily!!!!
:::
:::But as a short-cut ...when you do go to POTP www.oldradioparts.com you will see that often Gary will note that certain output transformers he has there are good for certain type output tubes... like 50L6, 35L6... or 6v6, 6L6, 42, 41 etc.
:::
:::Here is the PERFECT article that will clearly explain and show you EASILY and clearly how to figure out or determine EXACTLY the right output transformer.
:::
:::I love this article... because it cleared up all the mysterious questions I ever had about output transformer calculations....lol
:::
:::There is a chart at the end of the article showing which output tubes require which impedances.
:::
:::Read it a few times and believe me it will start to sink in cause it is EASY..
:::
:::http://www.radioremembered.org/outimp.htm
:::
:::Good luck,
:::let's hear how you make out,
:::Peter
::
::Peter; Thanks very much for the info. I should be able to locate the proper transformer with the help of this article !!
::Andy
:
:
:Hi again Peter; I wanted to get back to you to let you know how I'm making out with my transformer problem.
:The original transformer had 2 wires from the primary; a black wire which was connected to the plate(pin 3) of the 35L6 output tube,and a red wire connected to pin 4 of the 35Z5 rectifier tube. The secondary had a black and a green wire connected to the loudspeaker.
:I pulled an output transformer from a junker RCA 9X-561 chassis. It had been connected to a 50L6 output tube so it matched the 2000 ohm impedance requirement and phyically it fit almost perfectly into the space where the old transformer fit. I connected the green and black wires from the secondary to the loudspeaker. The problem I then had was that there was an orange,a brown and a blue wire from the primary winding on the replacement transformer. I connected the orange wire to pin 4 of the rectifier tube and I connected the brown wire to pin 3 of output tube. I left the blue wire disconnected. I powered up the set through an isolation transformer and lo and behold the radio picked up a station. I was more than happy to finally get some sound. I checked the voltage on pin 3 of the 35L6 output tube and measured 98V whereas prior to replacing the transformer I had a reading of 2.6V.
:Even though there is sound it is not overly loud when I have the volume cranked up.
:What should I do with the blue lead from the primary and has the low volume got something to do with the fact that the blue lead is not connected to anything? From what I have read this my be a humbucking wire???
:Thanks again for any help you can give me.
:Andy
:
:
:----------------------------------
If you have an output transformer like Edd's posted photo sometimes it opens between red and brown leads. If this tap is open just move R15, 1000 ohms, from brown to red lead. The radio will operate. May need to increase second filter cap if there is a little hum.
Norm
:
:
:
:
:Heh..Heh..Heh... what were the chances , and you lucked out and left the plate lead of the transformer floating and used the humbucking tap and the B+ part of the
:RCA sub transformer . Here is a thumbnail of the RCA circuitry below, and if your Stromberger- Carlsonator unit only uses a single untapped winding on its original transformer, you would want the subbed in RCA xformers blue wire going to the output tubes plate and its red/or/orange wire to the 35Z5 B+ source and you have its secondary windings wires being correct, with the free brown wire being unused and left to be taped up.
:
:That S-C output transformers "Black" primary lead probably was dark blue many eons back, as that is the typically normal color coding for a plate connection of an output transformer transformer.
:
:Thassit.
:
:
:
:
:
:73's de Edd
:
:
:
:
:
:
:
::::Andy:
::::Your radio uses a 35L6 output tube right?...Okay.. according to the info I listed below for you... your tube requires about a 2,000 ohm impedance output transformer.
::::
::::So that means if you are using a 4-ohm speaker that you will need to use a transformer with a turns ratio of about 25:1
::::
:::
:::
:::
:::
:::
::::The article below explains exactly why and how to determine that....easily!!!!
::::
::::But as a short-cut ...when you do go to POTP www.oldradioparts.com you will see that often Gary will note that certain output transformers he has there are good for certain type output tubes... like 50L6, 35L6... or 6v6, 6L6, 42, 41 etc.
::::
::::Here is the PERFECT article that will clearly explain and show you EASILY and clearly how to figure out or determine EXACTLY the right output transformer.
::::
::::I love this article... because it cleared up all the mysterious questions I ever had about output transformer calculations....lol
::::
::::There is a chart at the end of the article showing which output tubes require which impedances.
::::
::::Read it a few times and believe me it will start to sink in cause it is EASY..
::::
::::http://www.radioremembered.org/outimp.htm
::::
::::Good luck,
::::let's hear how you make out,
::::Peter
:::
:::Peter; Thanks very much for the info. I should be able to locate the proper transformer with the help of this article !!
:::Andy
::
::
::Hi again Peter; I wanted to get back to you to let you know how I'm making out with my transformer problem.
::The original transformer had 2 wires from the primary; a black wire which was connected to the plate(pin 3) of the 35L6 output tube,and a red wire connected to pin 4 of the 35Z5 rectifier tube. The secondary had a black and a green wire connected to the loudspeaker.
::I pulled an output transformer from a junker RCA 9X-561 chassis. It had been connected to a 50L6 output tube so it matched the 2000 ohm impedance requirement and phyically it fit almost perfectly into the space where the old transformer fit. I connected the green and black wires from the secondary to the loudspeaker. The problem I then had was that there was an orange,a brown and a blue wire from the primary winding on the replacement transformer. I connected the orange wire to pin 4 of the rectifier tube and I connected the brown wire to pin 3 of output tube. I left the blue wire disconnected. I powered up the set through an isolation transformer and lo and behold the radio picked up a station. I was more than happy to finally get some sound. I checked the voltage on pin 3 of the 35L6 output tube and measured 98V whereas prior to replacing the transformer I had a reading of 2.6V.
::Even though there is sound it is not overly loud when I have the volume cranked up.
::What should I do with the blue lead from the primary and has the low volume got something to do with the fact that the blue lead is not connected to anything? From what I have read this my be a humbucking wire???
::Thanks again for any help you can give me.
::Andy
::
::
::----------------------------------
Your middle name should be "Mr. extra super helpful"
...you always go that extra mile to give somebody the perfect helpful solution ....with graphics to boot!
:Your middle name should be "Mr. extra super helpful"
:...you always go that extra mile to give somebody the perfect helpful solution ....with graphics to boot!
Hi EDD,Norm and Peter:
Thanks for your help and EDD, I had to choose which two of the three wires to hook up and my thinking was orange was close to red in colour, and brown was close to black, and blue wae left over so thats the way I hooked it up. I'm on my way to do my school bus run and when I get back around 9:00 am I will reconnect the wires properly and I'll let you know the results. Thanks again guys.
Andy
---------------------------------
::Your middle name should be "Mr. extra super helpful"
::...you always go that extra mile to give somebody the perfect helpful solution ....with graphics to boot!
:
:
:
:Hi EDD,Norm and Peter:
:Thanks for your help and EDD, I had to choose which two of the three wires to hook up and my thinking was orange was close to red in colour, and brown was close to black, and blue wae left over so thats the way I hooked it up. I'm on my way to do my school bus run and when I get back around 9:00 am I will reconnect the wires properly and I'll let you know the results. Thanks again guys.
:
:
:Andy
:
:
:---------------------------------
Hi again; Well, I disconnected the brown lead and replaced it with the blue lead as per EDD's schematic and WOW !! the stations are now coming in loud and crystal clear. I had previously recapped the set completly and replaced 2 resistors which were way out of spec. Now I will go ahead and clean and polish the cabinet and I'll have another nice radio.
Thanks to everyone for your professional advice!!
Andy
----------------------