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Tips on Audio Interstage Transformers – Philco Library

    https://philcoradio.com/library/index.php/shop-talk/general/tips-on-audio-interstage-transformers/
    To begin, let us take a look at a (slightly simplified) audio interstage circuit, as used in a Philco Model 20. Notice how the audio signal comes in to the grid of the Type 27 tube, is amplified, and sent to the audio interstage …

Tube Driver - Interstage (124 Series)

    https://files.valinonline.com/userfiles/documents/hammond-tube-audio-transformers.pdf
    TUBE DRIVER - INTERSTAGE TRANSFORMERS. • Designed for general purpose or replacement use in single ended or phase inverter tube driver circuits. • Open style with minimum 5" long primary leads • Minimum frequency response 150 Hz. - 15 Khz (+/- 1 db max. ref. 1 Khz.) at full rated power. • Part number 124B is the same as the 124A except for 49% Nickel laminations for …

Tube Driver - Interstage (124 Series) - Hammond Mfg.

    https://www.hammfg.com/electronics/transformers/audio/124
    10 rows

Evaluating Electrolytic Capacitors Specified for …

    https://www.aes.org/e-lib/download.cfm/20891.pdf?ID=20891
    specified for audio use—in interstage coupling applica-tions within a real-world line-level audio circuit developed around operational amplifiers. 1 EXPERIMENT DESIGN AND METHODOLOGY Ideally,testingwouldbeperformedonanumberofiden-ticalanalogaudioconsoles,eachdifferingonlyinthemake andmodelofDC …

FAQ on interstage and line output transformers (Lundahl)

    https://www.diyparadiso.com/lundahl/faq21.htm
    Example of Tubes you can use in circuit A : All tubes with Rp lower then 7,5K or parallel them so that you lower Rp Keep anode current within transformer ratings ( 10% more is ok ) Unloaded interstage or direct grid drive (circuit A,B&C) What interest us : Aa what frequency 80H will = 6K F = 6000/6,3 . 80H) = 11,9 Hz ( lowest frequency )

100 Amplifiers, part 2 , 1945 – 54 - Lilienthal Engineering

    http://lilienthalengineering.com/100-amplifiers-chapter-1/100-amplifiers-part-2-1945-54
    This interstage circuit is not the only unusual factor about this amplifier. It is equipped with a rather clever Automatic Bias Control , hence the short name: “ABC”. The ABC circuit was invented and patented by Lincoln Walsh, some years previous to this amplifier. The ABC circuit is handled by V8, yet another 7N7 twin triode.

Tube Driver - Interstage (126 Series) - Hammond Mfg.

    https://www.hammfg.com/electronics/transformers/audio/126
    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 and bandwidth. Minimum frequency response 20 Hz. - 20 Khz (+/- 1db max. ref. 1 Khz.). The core is gapped to support the specified D.C. bias current. Maximum working voltage - 400 VDC.

TU8600S with intestage | diyAudio

    https://www.diyaudio.com/community/threads/tu8600s-with-intestage.367350/
    **** TU8600S with interstage transformer **** sorry for the typo. Hello, I am another fan of TU8600S and I toyed with this wonderful amp and I thought what I did may be of interest to some. In short, I put the para-feed interstage before 300B without changing any given circuit except not using the C104 and C204.

Audio Transformers On Triad Magnetics

    https://catalog.triadmagnetics.com/category/audio-transformers
    Triad produces a wide assortment of audio transformers for use in printed circuit designs. These transformers fill a broad application spectrum in the audio industry. Triad audio printed circuit transformers are used in line matching, telephone coupling, pulse trigger, interstage, output, isolation and input applications.

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