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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
1 The Audio Output Power Transformer or OPT
http://www.tubeclinic.com/CalcAudioTX.pdf
There are two different kinds of Audio transformers – o the output power transformer or OPT, which matches the output power of a tube to its load (e.g. the speaker). This topic is covered in PART 1 . o the voltage transformer or VTX, which serves only the task to present a big as possible voltage to the following amplification stage.
Calculate Tube Amplifier Output Transformer Load Resistance
http://mh-audio.nl/Calculators/OTLoadResistance.html
Lets assume we have a set that has an output transformer with an open winding that must be replaced, and the output tube is a single 2A3 Triode. First we look at the 2A3 Tube Datasheet and see that a 2A3 should work into a load resistance of approximately 2500 ohms.
Output Transformer Impedance
https://www.radioremembered.org/outimp.htm
The function of the audio output transformer is to transform the high impedance of the output tube to match the much lower impedance of the speaker. This is necessary to get an efficient transfer of the audio signal to the speaker. The output transformer as an impedance matching device, works on the principal of reflected load.
Audio Transformers
https://www.jensen-transformers.com/wp-content/uploads/2014/08/Audio-Transformers-Chapter.pdf
Conversely, a transformer with a turns ratio of 1:2 would be called a step- up transformer since its secondary voltage would be twice that of the primary. Since a transformer does not create power, the power output from the secondary of an ideal transformer can only equal (and in a real transformer only be less than) the power input to the primary.
Output Transformer Design and Winding - geofex.com
http://www.geofex.com/Article_Folders/xformer_des/xformer.htm
(Note - good audio transformers have historically used iron of about 0.014" thickness, about twice the thickness of a computer card - which is itself becoming almost unknown.) Unwinding one is also one of the best introductions to transformer winding technique that you can get.
Step Up Transformer Calculations - mh-audio.nl
http://mh-audio.nl/Calculators/StepUpTransformer.html
AUDIO TRANSFORMER DESIGN FOR TUBE AMPLIFIER WITH …
http://www.standardsuniversity.org/wp-content/uploads/audio_transformer_design_tube_amplifier_pichkalyov_final_paper.pdf
OUTPUT AUDIO TRANSFORMER DESIGN The output transformer in a single-ended tube amplifier is the device which matches the high-output impedance of the tube to the low input impedance of the speaker load (4, 8 or 16 Ohm). To design an output transformer, it is necessary to determine the output power according to the tubess characteristics, most ...
Valve Amps: Output transformers - Lenard Audio
https://education.lenardaudio.com/en/14_valve_amps_5.html
Output trannys contribute most of the distortion in a valve amp and have a limited bandwidth. Valve amp manufacturers purchase trannys from transformer winding companies. Transformer winding is an extension of the fitting and turning industry. Few people working in transformer winding companies have a knowledge of electronics or valve amps.
Audio Transformer - Engineers Garage
https://www.engineersgarage.com/audio-transformer/
Line Output. Typically, audio transformer is driven by an amplifier and loaded by several thousand pF cable capacitance and high input impedance of line receiver. Therefore, a line output transformer should have low output impedance which remains low at high frequencies. This requires both low resistance windings and very low leakage inductance. 5.
Coil and transformer calculator - Dicks-website
http://dicks-website.eu/coilcalculator/index.html
The magnetizing current is a small current which flows through the primary winding of a transformer, even if the output of the transformer is not loaded. The magnetizing current is building up the magnetic flux in the transformer core. The amplitude of the magnetizing current is calculated with: Im = Vp / (2.pi.f.Lp) Where:
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