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R-Core Transformers - Custom Magnetics
https://www.custommag.com/r-core-transformers
The R-Core with its low-leakage, low-noise characteristics is well suited for medical equipment, audio & video amplifiers, and other noise sensitive equipment. Circuit designers are able to place the transformer closer to other critical electronic components. Another unique feature of the R-Core is the use of two part bobbins.
R-Core transformer. Worth it? - the audio and hifi community
https://www.audiocircle.com/index.php?topic=76725.0
Re: R-Core transformer. Worth it? « Reply #6 on: 25 Jan 2010, 04:46 pm ». The advantages of of R-cores over toroidal transformers (unless the toroidal has a shield between primary and secondary) regarding bandwidth and the passing of noise are quite real and measurable, and IMO, subjectively perceptable.
Power Transformers for Audio Equipment | audioXpress
https://audioxpress.com/article/Power-Transformers-for-Audio-Equipment
R-Core Power Transformer - TC Tubes
https://tctubes.com/R-Core-Power-Transformers-270VAC.aspx
R-Core Power Transformer - low voltage Price: $20.00 This R-core transformer was designed for high end audio applications. The HV winding is cabable of 45VAC at 75mA, useful for 6H30Pi or 6DJ8 tube types. There are three additional low voltage windings. Perfect for a …
50W Power Toroidal Audio Output Transformer , R Core ...
http://www.stereovacuumtubes.com/sale-10094392-50w-power-toroidal-audio-output-transformer-r-core-transformer-high-strength.html
Type: Toroidal Transformer. Coil Structure:: Toroidal. Place of Origin:: Guangdong, China (Mainland) 50W Tube AMP Transformer Double 24V Double 12V Out Voltage For Electronic Usage. Type: R-Core. Power: 50W. Input Voltage: 115V-230V. Out Voltage: Double 24V Double 12V. 30W Power Tube AMP Transformer R - Core Transformer For Audio Amplifier.
R-Core_Power Transformer_Analog Metric - DIY Audio Kit ...
http://www.analogmetric.com/category.php?id=184
Transformer T20 T20L 50W 20Vx2 15Vx2 12V... $36.00. $36.00. R-Core R26 40W Transformer Series. $39.00. $39.00. R-Core R80 100W Transformer Series. $55.00. $55.00.
R core transformer_James transformer-custom toroidal ...
http://jamestransformer.com/en/transformer/R_core_transformer.html
R Core Transformers | diyAudio
https://www.diyaudio.com/community/threads/r-core-transformers.118316/
2008-03-12 6:14 am. #20. Millions of R-core transformers made in factories in Asia – mostly in China- are in use in various equipments worldwide. UL, CSA and EU quality certifying agencies have offices in China, Taiwan, India and many other countries of Asia.
DIY Audio Projects Forum • Elekit TU-870R R-Core Power ...
https://diyaudioprojects.com/Forum/viewtopic.php?t=3262
It looks like something may have changed since I ordered from them over a year ago. As you can see in the very first post in this thread (Elekit TU-879S (SE 6L6GC) Tube Amplifier Kit Build Notes) that my TU-879S tube amp kit from TubeDepot came with the proper Japanese made 120V R-core transformer from Phoenix Corp. - see the photos in the first post.
Softone RW-20 Single-Ended Audio Output Transformer
http://softone.a.la9.jp/english/RW20.htm
R core is of non-cut construction and has excellent magnetic properties. The magnetic core used for audio output transformer has evolved from EI core, cut core, and to toroidal core achieving successful results to improve the performance of the transformer. R core has several advantages over toroidal core that has been evaluated as the best.
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