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how to make audio output transformer | diyAudio
https://www.diyaudio.com/community/threads/how-to-make-audio-output-transformer.193087/
turns = 33 x root of 2500 = 33x 50 = 1650 turns, 5 layers prim, sec, prim, sec, prim. not sure about air gap, there is SOME info on the web. the primary turns is a simplification of the classic transformer equation, viz. B= (1.10 ^8 x volts) / 4.44 x Frequency x Area x turns. where b = ac flux, I have used 8000 here.
DIY audio transformer making part1 - YouTube
https://www.youtube.com/watch?v=38s2LxZGW9o
DIY audio transformer making part1 for beginner. Transformer making is not a complicated process. It need practice to make a better audio transformer each ti...
How to make the audio transformer - YouTube
https://www.youtube.com/watch?v=KRNljBm8c2E
Winding the output transformer for vaccum tube audio.
Fisher Output Transformer ID - diyAudio
https://www.diyaudio.com/community/threads/fisher-output-transformer-id.177359/
As a comparison to the Fisher transformers, here's the numbers from one of a pair of transformers that reportedly came from a Knight 6BQ5 amp. Since they weigh in at 1.5 lb vs. 2.35 lb for the Fisher transformers, I wouldn't expect them to fare as well in the inductance department. Anyway, for 50V, 300V excitation plate-plate;
Using mains transformer as output transformer | diyAudio
https://www.diyaudio.com/community/threads/using-mains-transformer-as-output-transformer.129030/
The transformer is 25:1 , so 1A of filament current offsets approx 40mA of anode current . Requires a variable fixed bias supply for optimum results but worked ok with a cathode bias network also . Takes a bit of tweaking to get right , there is a window of approx 2mA either side of the 40mA figure before audiable saturation occurs .
Fisher 400 Output Transformers - diyAudio
https://www.diyaudio.com/community/threads/fisher-400-output-transformers.132569/
I took a 400 output transformer and a 500B output transformer in to work for some measurements on our nice LCR meter, and found out some interesting things. 400C transformer: Primary (BLU to BLU/WHT) - 14.5H. Sec1 (BLK-BRN) 14.8 mH. Sec2 (BLK-GRN) - …
Transformers – DIY Pro Audio
https://diyproaudiosupply.com/index.php/product-category/transformers/
Altran C-3402-2 Mic Input Transformer $ 60.00 Add to cart; AMI T13 U87 Mic Transformer $ 95.00 Read more; Cinemag CM-96731 1176 Output Transformer $ 84.00 Add to cart; Cinemag CMMI-8-PCA $ 60.00 Add to cart
"Explain Like I'm 5": Audio Transformers – DIY Recording ...
https://www.diyrecordingequipment.com/blogs/news/explain-like-im-5-transformers
A typical output impedance for a single coil pickup is around 20k Ohms, which our DI box will step down to 138.8 Ohms, which is typical of a microphone. Now we can run that guitar directly into our mic preamp with no impedance issues. Transformers …
Hand winding custom output transformer - YouTube
https://www.youtube.com/watch?v=056TWuUW1Pg
One of my local customer request for custom- made 832 PP amplifier. This is the output transformer I made for 832 PP project. The output are double C core ty...
Strange output transformers - Tiny Daddy - Tube DIY Asylum
https://www.audioasylum.com/forums/tubediy/messages/2/22393.html
Strange output transformers. Posted by Tiny Daddy (M) on January 1, 2003 at 06:41:32 . In Reply to: Re: Ultra-Linear posted by marnold on December 31, 2002 at 19:27:49: Why did they did it and what's it called I don't know. Perhaps you could post this question separately.
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