Transformer - Audio Interstage, 10 mA

Transformer - Audio Interstage, 10 mA

Transformer - Audio Interstage, 10 mA image 1
Customer image:<br/>"Two P-T156 interstage transformers used to replace bad transformers in an Atwater Kent Breadboard radio. They work great in this application. A closed circuit jack was added to accomodate an MP3 input dongle."
Customer image:<br/>"Radiola  ac replacement "
Customer image:<br/>"Xformer Inside Pot of a Stewart Warner model 535 of 1928"
Customer image:<br/>"Stewart Warner model 535-1928-Pot with Xformer installed inside and ready to work"
Customer image:<br/>"Photo of a P-T156 stuffed inside a vintage Neutrodyne audio transformer case."
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Transformer - Audio Interstage, 10 mA image 1
Customer Images:
Customer image: "Two P-T156 interstage transformers used to replace bad transformers in an Atwater Kent Breadboard radio. They work great in this application. A closed circuit jack was added to accomodate an MP3 input dongle."Customer image: "Radiola  ac replacement "Customer image: "Xformer Inside Pot of a Stewart Warner model 535 of 1928"Customer image: "Stewart Warner model 535-1928-Pot with Xformer installed inside and ready to work"Customer image: "Photo of a P-T156 stuffed inside a vintage Neutrodyne audio transformer case."
$16.95
In Stock

Equivalent to Stancor A53-C. 1:3 ratio overall. Center tapped secondary may be used for push-pull grids.

Specifications:

  • Max. Primary Current: 10 mA
  • Impedance Primary to Secondary (Ohms): 10,000 to 90,000
SKU:
P-T156
Item ID:
003437
UPC/EAN:
841358109713
Product Measurements by Type
Impedance, Primary to Secondary10 kΩ to 90 kΩ
Item Height1.36 in.
Item Length2.365 in.
Item Width1.224 in.
Mounting Hole Center to Center A1.95 in.
Mounting Hole Diameter0.187 in.
Primary Current, maximum10 mA
Packaging Information
Packaging Dimensions7.3 in. × 2.3 in. × 1.3 in.
Weight (Packaging)0.343 lbs.

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Questions and Answers

Click each question to see its answers.
Asked by vmoncholi on November 10th, 2020.
MikeT
November 11th, 2020
Staff Member
We are not familiar enough with this model to offer any advice. We do have a schematic that might match your radio here: https://www.tubesandmore.com/sites/default/files/schematics/stewart_warner_corp_535_pg1-1.png
vmoncholi
November 11th, 2020
To Staff member that answered my question: I know it is not easy to answer on a particular model, but, in your experience, normally the primary is to connect plate to +HT, and secondary is to connect to grid next audio interstage?, am I right? Thanks
MikeT
November 11th, 2020
Staff Member
What you have described is a common configuration used. The center tap of the secondary is typically grounded with the two ends of the secondary winding connecting to the grids of a push pull amplifier.
vmoncholi
November 11th, 2020
Thanks a lot. When I finish and resurrect the radio I will send to you a Stewart Warner 535 schematics enriched with components data and measurements that are absent from any literature you can find elsewhere today. I am very advanced today, but I need to build the power supply to test the radio. Cheers!!
Asked by Anonymous on November 25th, 2019.
ClarkR
November 26th, 2019
Staff Member
that is correct
Asked by Anonymous on January 30th, 2021.
MikeT
February 8th, 2021
Staff Member
Generally the polarity of a transformer like this won't matter unless there is some sort of feedback in the circuit.
Asked by Th3DrJFever on April 1st, 2021.
MikeT
April 2nd, 2021
Staff Member
We are not sure what the specifications are for the transformer in that amp so we can't recommend this as a replacement.

Product Reviews

4.97 out of 5 based on 37 reviews
- February 19th, 2021
5 out of 5

Worked good in my Elmac AF-67

- October 2nd, 2020
5 out of 5

Perfect replacement for those bad audios in your 1920’s radios.

- September 29th, 2020
5 out of 5

I used this to replace a grid drive transformer for a push pull output stage on my Majestic model 90B it worked very well.

- June 1st, 2020
5 out of 5

It worked just fine...........

- May 20th, 2020
5 out of 5

Used this to replace a push-pull xfmr with a bad primary on a 1929 Philco 86. Worked great! The compact size allowed me to place it under the original housing to maintain the vintage look and the radio sounds great!

- May 9th, 2020
5 out of 5

A very good transformer, especially for the price. Audio interstage transformers are hard to get now, and this is a good source. I've used several in past years and had no problems.

- May 9th, 2020
5 out of 5

a near perfect replacement for a suddenly defective 1st audio transformer in a crosley trirdyn special .good to have a spare on hand.

- May 5th, 2020
5 out of 5

Used in a 1925 DeForest radio. Worked great. Radio is playing again!

- April 30th, 2020
5 out of 5

Transformers arrived here in Christchurch New Zealand approx 2 weeks from order.Given Covid 19 conditions I am very pleased with this prompt service.Transformers are to be used in the restoration of two 1920's radios, Fada and Stewart Warner and it looks like they are going to be small enough to fit inside the original transformer housings. Good job Antique Electronic Supply.

- January 21st, 2020
5 out of 5

I used a couple of these on an Atwater Kent model 20 big box, and worked fine.