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.

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Description Prix Primary Impedance Secondary Impedance Primary DC Resistance Power Rating Current Rating Secondary DC Resistance Dimensions Mounting Type Termination Type Weight Depth Diameter Length Width
N° de stock RS 123-7211
Référence fabricantA262A48E
MarqueOEP
17,28 €
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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
N° de stock RS 123-7229
Référence fabricantZ1685E
MarqueOEP
8,68 €
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600Ω 600Ω 117Ω 2mW - 151Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
N° de stock RS 168-3108
Référence fabricant749196138
4,763 €
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- - 344mΩ - 500mA - 12.9 x 9.2 x 6.2mm Surface Mount Solder - 6.2mm - 12.9mm 9.2mm
N° de stock RS 715-6914
Référence fabricantDA101C
1,34 €
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- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
N° de stock RS 667-6050
Référence fabricantZ21808C
MarqueOEP
20,58 €
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150Ω - 45Ω - - 1.5kΩ 25 x 18.5 x 19.3mm Through Hole - - 19.3mm - 25mm 18.5mm
N° de stock RS 667-5950
Référence fabricantZ3002E
MarqueOEP
21,37 €
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10kΩ 10kΩ 2.1kΩ - - 2.2kΩ 32 x 15 x 27mm Through Hole - - 27mm - 32mm 15mm
N° de stock RS 123-7231
Référence fabricantZ1687E
MarqueOEP
8,65 €
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600Ω 1.2kΩ 117Ω 2mW - 262Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
N° de stock RS 168-3316
Référence fabricant749196527
10,53 €
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- - 36mΩ - 2.3A - 21.5 x 21 x 12mm Surface Mount Solder - 12mm - 21.5mm 21mm
N° de stock RS 123-7216
Référence fabricantJ30A14C
MarqueOEP
45,57 €
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200 Ω, 800 Ω 10 kΩ, 39 kΩ 118Ω - - 1.384kΩ 36 x 30 x 25mm Through Hole PC Pin 110g 25mm - 36mm 30mm
N° de stock RS 123-7209
Référence fabricantA262A45E/1
MarqueOEP
17,28 €
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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
N° de stock RS 715-6917
Référence fabricantDA102C
1,34 €
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- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
N° de stock RS 168-3119
Référence fabricant749196338
4,944 €
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- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
N° de stock RS 123-7204
Référence fabricantA187A16C/1
MarqueOEP
35,30 €
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30 Ω, 100 Ω 10 kΩ, 49 kΩ 19Ω - - 647Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
N° de stock RS 168-3105
Référence fabricant749196108
4,626 €
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- - 344mΩ - 500mA - 12.9 x 9.2 x 6.2mm Surface Mount Solder - 6.2mm - 12.9mm 9.2mm
N° de stock RS 168-3245
Référence fabricant749196248
7,07 €
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- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
N° de stock RS 168-3229
Référence fabricant749196238
9,30 €
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- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
N° de stock RS 168-3120
Référence fabricant749196348
5,116 €
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- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
N° de stock RS 123-7198
Référence fabricantA187A10C
MarqueOEP
30,58 €
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140kΩ 1 + 1kΩ 3.2kΩ - - 314Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
N° de stock RS 168-3298
Référence fabricant749196128
7,47 €
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- - 344mΩ - 500mA - 12.9 x 9.2 x 6.2mm Surface Mount Solder - 6.2mm - 12.9mm 9.2mm
N° de stock RS 667-6088
Référence fabricantZ218A6E
MarqueOEP
11,00 €
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600Ω - 46Ω - - 60Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm