Transformer - Audio Interstage, 10 mA
Equivalent to Stancor A53-C. 1:3 ratio overall. Center tapped secondary may be used for push-pull grids.
- Max. Primary Current: 10 mA
- Impedance Primary to Secondary (Ohms): 10,000 to 90,000
|Impedance, Primary to Secondary||10 kΩ to 90 kΩ|
|Item Height||1.36 in.|
|Item Length||2.365 in.|
|Item Width||1.224 in.|
|Mounting Hole Center to Center A||1.95 in.|
|Mounting Hole Diameter||0.187 in.|
|Primary Current, maximum||10 mA|
|Packaging Dimensions||7.3 in. × 2.3 in. × 1.3 in.|
|Weight (Packaging)||0.343 lbs.|
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Questions and Answers
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4 answers Hi, I just bought 2 of this transformer, just to restore a Stewart Warner model 535, that has two audio interstage transformers with coils open. My doubt is: which coil is to be connected to plate, the coil with 2 wires or the coil with 3 wires? Obviously the other coil is to grid. Thanks a lot. Regards.
Asked by vmoncholi on November 10th, 2020.
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
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
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.
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!!
1 answers what are the leads on this transformer, 2 on the primary and 3 on the secondary??
1 answers I bought this transformer a while ago - coming out of the primary are a red and a blue wire. This transformer will replace an interstage transformer on an RCA Radiola Model 82 Radio. The secondary leads connect to the push-pull amplifier, as you describe in the last question. From the primary on the original, there is a red/yellow lead that connects to the capacitor pack and the power transformer. Also from the primary, there is a red w yellow trace lead that connects to the tone control. Does it matter which connections the red and blue should make? Should the red on the new transformer connect where the red/yellow wire was? Thanks for your help. Ken
1 answers So I’m reconstructing a Fender Musicmaster Bass amp and it uses the interstage as a phase inverter. Will this works as such?