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AUDIO TRANSFORMER DESIGN FOR TUBE AMPLIFIER WITH IMPR…
http://www.standardsuniversity.org/wp-content/uploads/audio_transformer_design_tube_amplifier_pichkalyov_final_paper.pdf#:~:text=The%20number%20of%20windings%20was%20then%20calculated%20%3A,at%20fig.%204.%20Fig.%204.%20Output%20audio%20transformer
Calculate Tube Amplifier Output Transformer Load Resistance
http://mh-audio.nl/Calculators/OTLoadResistance.html
An ac voltmeter is connected to the secondary of the OT to measure the output voltage. Now, measure then primary voltage of the OT. For example, if the voltage on the primary measures 13 voltsand the secondary measures 0.52 voltsthe …
Output Transformer Impedance
https://www.radioremembered.org/outimp.htm
Z = E/I Z = 100/.2 = 500 ohms. This is called the reflected load. A 10 ohm load reflects back a1,000 ohm impedance, while a 5 ohm load reflects back a 500 ohm impedance. The reflected impedance is a function of the turns ratio of the …
Output Transformer Winding. | diyAudio
https://www.diyaudio.com/community/threads/output-transformer-winding.382687/
When winding OP-transformers, keeping parasitic inductance and stray capacitance at low values is a good thing. If there's room to spare inside the lamination window, adding extra layers of insulation would help lessen stray capacitance between layers. -Would this also result in less coupling...
Valve Amps: Output transformers - Lenard Audio
https://education.lenardaudio.com/en/14_valve_amps_5.html
Our sample output tranny has 4 primary windings (600 turns per winding) a total of 2,400 turns. 2,400 primary turns / 23.7 = 101 secondary turns. This academic process requires the formula to be repeated over and over for each change in calculation.
AUDIO TRANSFORMER DESIGN FOR TUBE AMPLIFIER WITH …
http://www.standardsuniversity.org/wp-content/uploads/audio_transformer_design_tube_amplifier_pichkalyov_final_paper.pdf
By using the above formula, we can calculate the turn number of windings required. It is proportional to the ratio of input and output impedances: n=Np/Ns=(Zp/Zs)1/2 where Np and Ns designate the primary and secondary turn numbers. n=(4096/4)1/2= 32; The equivalent transformer impedance can be then calculated (tube impedance is 5 kOhm and Zp is
Audio Transformers
https://www.jensen-transformers.com/wp-content/uploads/2014/08/Audio-Transformers-Chapter.pdf
Transformers always reflect impedances from one winding to another by the square of the their turns ratio or, expressed as a formula: Zp/Zs = (Np/Ns) 2 …
Output Transformer Design and Winding - geofex.com
http://www.geofex.com/Article_Folders/xformer_des/xformer.htm
The voltage on the 10 turn winding lets you calculate the volts per turn that the transformer is running at. From this, you can calculate the number of turns on any winding, subject only to the accuracy with which you make the measurements, by measuring the voltage ratio to the 10 turn winding and the normal winding, then multiplying by the number of turns on the test winding.
Audio Transformer - Engineers Garage
https://www.engineersgarage.com/audio-transformer/
Fig. 3: Example Showing Derivation of Turns Ratio for an Audio Transformer with Input Impendance = 1800W and Loudspeaker Impendance = 8W. With the transformer in between the amplifier and the speaker, amplifier will see an output impedance of 1800W, though actual load impedance is still the same, i.e., 8W.
DIY Transformer Winding | diyAudio
https://www.diyaudio.com/community/threads/diy-transformer-winding.145116/
When I am checking out a transformer I use a signal generator to send a 5kHz signal in one end and measure the ratio of input/output. I've wound quite a few SMPS transformers this way -- with mystery cores -- life is simpler if you purchase cores from Amidon because you don't have to cut and measure -- works right the first time from the ...
How to Measure Output Transformer ... - Antique Radio Forums
https://www.antiqueradios.com/forums/viewtopic.php?t=33035
Clear enough. Then?<P>Take that "windings ratio" and square it: 25x25=625. The resulting 625 number is then divided by your known transformer impedance, which in my case (the Stancor A-3310) is 5,000 ohms (thanks for the stats Izzy). 5,000 divided by 625=8.
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