Tube Audio Coupling Transformer

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Hammond Mfg. - Audio - Tube Driver Transformer - (124 ...

http://www.hammondmfg.com/124.htm

Designed for driver use ONLY in single ended tube output amplifiers. These units replace coupling capacitor circuits for improved sound. Closed style with minimum 8" long leads. All models use bifilar wound windings for exceptional coupling …

Amazon.com: audio transformer

https://www.amazon.com/audio-transformer/s?k=audio+transformer

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Transformers for Audio

https://sound-au.com/articles/audio-xfmrs.htm

Toroidal transformers are better in this respect, but that's an expensive way to get a signal transformer that will be far bigger than an equivalent 'audio transformer'. Of course, transformers are used in valve (vacuum tube) amplifiers, occasionally for inter-stage (coupling) but almost always for the speaker output.

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 ...

Tips on Audio Interstage Transformers – Philco Library

https://philcoradio.com/library/index.php/shop-talk/general/tips-on-audio-interstage-transformers/

This B+ is blocked by the added coupling capacitor between the 27 plate and the primary of the audio interstage transformer. The circuit shown at left shows a 0.47 uF capacitor used for audio coupling; 0.22 uF may be used instead, and you might even try 0.1 uF if that is all you have on hand. It should be rated at 630 WVDC.

DIY audio A transformer coupling amplifire with EH 300B ...

https://www.youtube.com/watch?v=q_2P0kCFMfw

Bing Crosby with Les Paul trioIt's Been a Long, Long TimeA transformer coupling valve amplifire remains greatest when you hear such oldies.A transformer coup...

By-passing Defective Audio and IF Transformers

https://antiqueradios.com/chrs/journal/transformers.html

The transformer coupling can usually be replaced by capacitor/resistor coupling often without any loss of performance. In the case of Audio Interstage Transformers, connect a capacitor from the plate of the driving tube to the driven tube grid, The value is not critical. I suggest 0.1 mfd at 400 volts. Then bypass the open winding with a resistor.

Single-Ended Class-A Tube Amplifier Design and Construction

https://diyaudioprojects.com/Technical/Papers/12AX7-6V6-Single-Ended-Class-A-Tube-Amplifier-Design-and-Construction.pdf

class-A amplifier is presented. By employing the use of tube technology and transformer coupling, a musical sounding amplifier is devised taking advantage of 2nd order harmonic distortion and a shortest possible signal path. Index Terms—Class-A, Audio, Electron Tube I. INTRODUCTION ODERN AUDIO AMPLIFIERS are efficient, noise-free,

AUDIO OUTPUT STAGE - radioremembered.org

http://www.radioremembered.org/output.htm

The average impedance of the 6V6 tube is around 5,000 ohms, while the average speaker has an impedance of 4 to 8 ohms. This impedance match is accomplished by the turns ratio of primary to secondary of the output transformer. The output transformer may be either mounted on the speaker itself, or on the receiver chassis.

Replacing bad AF interstage xfmrs with RC coupling - values?

https://antiqueradios.com/forums/viewtopic.php?t=362787

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