Audio Transformers, Isolation & Valve Output | RS
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    Audio Transformers

    Audio Transformers are transformers designed to be used in the amplifiers and high-frequency audio and voice circuits, for coupling ad impendence matching applications. The transformers allow an AC input signal to produce a related AC output signal without the input and the output being physically connected together. This is accomplished by having two or more coils of insulated wire wound around a magnetic metal core. When the AC signal passes through the input winding, a related AC signal appears on the output winding via the inductive coupling.

    Audio Transformers perform several functions:

    • They can step up (increase) or step down (decrease) a signal voltage

    • They can increase or decrease the impedance of circuit

    • Convert the circuit from unbalanced to balanced and from balanced to unbalanced

    • Block DC current in a circuit while allowing the AC current flow

    • They electrically isolate one audio device from another

    There are two main types of transformers:

    • Step-up / Step-down transformers – The primary and the secondary coils have a different number of windings, that means they have different impedances. Different impedances cause the signal level changed as it goes through the transformer.

    • 1:1 transformers – Each coil has exactly the same number of windings which makes the impedance identical. This transformer doesn't change the signal level but guarantees the physical electrical insulation between coils. These transformers are usually called Isolation Transformers.

    111 Products showing for Audio Transformers

    OEP
    150Ω
    3.75Ω
    10.3Ω
    -
    -
    0.37Ω
    27.94 x 22 x 22.9mm
    Through Hole
    -
    -
    22.9mm
    -
    27.94mm
    22mm
    OEP
    5.6kΩ
    4 Ω, 8 Ω, 16 Ω
    100Ω
    25W
    -
    432Ω
    100 x 84 x 68.6mm
    Panel Mount
    Solder
    2kg
    68.6mm
    -
    100mm
    84mm
    Wurth Elektronik
    -
    -
    36mΩ
    -
    2.3A
    -
    21.5 x 21 x 12mm
    Surface Mount
    Solder
    -
    12mm
    -
    21.5mm
    21mm
    OEP
    10 → 20kΩ
    -
    1.8kΩ
    -
    -
    0.715 kΩ, 1.1 kΩ
    21.5 x 16.3 x 18mm
    Through Hole
    -
    -
    18mm
    -
    21.5mm
    16.3mm
    OEP
    200 Ω, 800 Ω
    5 kΩ, 20 kΩ
    24Ω
    100mW
    -
    1.076Ω
    27.94 x 22.9 x 22.2mm
    Through Hole
    PC Pin
    40g
    22.2mm
    -
    27.94mm
    22.9mm
    Wurth Elektronik
    -
    -
    36mΩ
    -
    2.3A
    -
    21.5 x 21 x 12mm
    Surface Mount
    Solder
    -
    12mm
    -
    21.5mm
    21mm
    Kr. 17,33
    Each (Supplied in a Tube)
    Murata Power Solutions
    -
    -
    -
    -
    -
    -
    9 x 6.35 x 10.16mm
    Through Hole
    -
    -
    10.16mm
    -
    9mm
    6.35mm
    OEP
    150 Ω, 600 Ω
    150 Ω, 600 Ω
    34.5Ω
    -
    -
    40.5Ω
    36 x 30 x 25mm
    Through Hole
    PC Pin
    110g
    25mm
    -
    36mm
    30mm
    OEP
    150Ω
    150Ω
    15Ω
    100mW Hz @ 300, 1mW Hz @ 30
    -
    20Ω
    28 x 22 x 23mm
    Through Hole
    Pin
    -
    23mm
    -
    28mm
    22mm
    OEP
    600Ω
    1.5 + 1.5 + 1.5kΩ
    83Ω
    -
    -
    89Ω
    36 x 30 x 25mm
    Through Hole
    PC Pin
    110g
    25mm
    -
    36mm
    30mm
    OEP
    600Ω
    600Ω
    117Ω
    2mW
    -
    151Ω
    18 x 18 x 15mm
    Through Hole
    PC Pin
    14g
    15mm
    -
    18mm
    18mm
    OEP
    4 → 15kΩ
    3 → 15Ω
    1012Ω
    3.5W
    40mA
    1.5Ω
    74 x 41.5 x 36mm
    Chassis Mount
    -
    250g
    36mm
    -
    74mm
    41.5mm
    Kr. 17,33
    Each (Supplied in a Tube)
    Murata Power Solutions
    -
    -
    -
    -
    -
    -
    9 x 6.35 x 10.16mm
    Through Hole
    -
    -
    10.16mm
    -
    9mm
    6.35mm
    EPCOS
    -
    -
    -
    -
    8mA
    -
    -
    Surface Mount
    -
    -
    -
    -
    -
    -
    OEP
    150 Ω, 600 Ω
    150 Ω, 600 Ω
    36.4Ω
    -
    -
    44.4Ω
    36 x 30 x 16mm
    Through Hole
    PC Pin
    57g
    16mm
    -
    36mm
    30mm
    OEP
    150 Ω, 600 Ω
    1.25 kΩ, 5 kΩ
    20.6Ω
    100mW
    -
    220Ω
    27.94 x 22.9 x 22.2mm
    Through Hole
    PC Pin
    40g
    22.2mm
    -
    27.94mm
    22.9mm
    Wurth Elektronik
    -
    -
    -
    -
    -
    -
    12.7 x 8.67 x 4mm
    Surface Mount
    Solder
    -
    4mm
    -
    12.7mm
    8.67mm
    OEP
    600Ω
    600Ω
    49.8Ω
    -
    -
    48.5Ω
    29.4 x 25 x 24.2mm
    Through Hole
    PC Pin
    56g
    24.2mm
    -
    29.4mm
    25mm
    OEP
    150 Ω, 600 Ω
    2.5 kΩ, 10 kΩ
    20.6Ω
    100mW
    -
    474Ω
    27.94 x 22.9 x 22.2mm
    Through Hole
    PC Pin
    40g
    22.2mm
    -
    27.94mm
    22.9mm
    OEP
    50Ω
    100Ω
    10.3Ω
    2mW
    -
    21.4Ω
    18 x 18 x 15mm
    Through Hole
    PC Pin
    14g
    15mm
    -
    18mm
    18mm
    Resultater per side