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 667-5962
Référence fabricantCN006
MarqueOEP
9,90 €
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Unité
- - - - - - 34.7 x 15.5 x 28.2mm - - - 28.2mm - 34.7mm 15.5mm
N° de stock RS 123-7200
Référence fabricantA187A12C
MarqueOEP
29,80 €
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600Ω 600Ω 49.8Ω - - 48.5Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
N° de stock RS 210-6368
Référence fabricantE187A
MarqueOEP
10,53 €
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800Ω 800Ω 63Ω - - 84Ω 20.5 x 17 x 16mm Through Hole - - 16mm - 20.5mm 17mm
N° de stock RS 210-6419
Référence fabricantA262A2E
MarqueOEP
13,39 €
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150Ω 600Ω 10.3Ω 100mW Hz @ 300, 1mW Hz @ 30 - 59.5Ω 27.94 x 22 x 22.9mm Through Hole Pin - 22.9mm - 27.94mm 22mm
N° de stock RS 851-3686
Référence fabricantZ1604
MarqueOEP
8,11 €
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600Ω 600Ω 109Ω 2mW - 134Ω 18 x 12.6 x 18mm Through Hole PC Pin - 18mm - 18mm 12.6mm
N° de stock RS 123-7214
Référence fabricantJ30A09C
MarqueOEP
49,82 €
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600Ω 1.5 + 1.5 + 1.5kΩ 83Ω - - 89Ω 36 x 30 x 25mm Through Hole PC Pin 110g 25mm - 36mm 30mm
N° de stock RS 123-7237
Référence fabricantV78A01F
MarqueOEP
62,85 €
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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
N° de stock RS 123-7207
Référence fabricantA262A8E
MarqueOEP
18,63 €
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2.5 kΩ, 10 kΩ 2.5 kΩ, 10 kΩ 424Ω 100mW - 464Ω 27.94 x 22.9 x 22.2mm Through Hole PC Pin 40g 22.2mm - 27.94mm 22.9mm
N° de stock RS 172-8670
Référence fabricantSM-LP-5001E
MarqueBourns
1,143 €
Each (On a Reel of 400)
Unité
- - - - - - 12.8 x 7.5 x 9mm Surface Mount Solder - 9mm - 12.8mm 7.5mm
N° de stock RS 123-7217
Référence fabricantK30A06C
MarqueOEP
47,15 €
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2.4 kΩ, 10 kΩ 10kΩ 450 (Primary 1) Ω, 590 (Primary 2) Ω - - 1.04kΩ 36 x 30 x 25mm Through Hole PC Pin 110g 25mm - 36mm 30mm
N° de stock RS 122-9165
Référence fabricantSM-LP-5001E
MarqueBourns
2,01 €
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600Ω - 115Ω - - 115Ω 12.8 x 7.5 x 9mm Surface Mount Solder - 9mm - 12.8mm 7.5mm
N° de stock RS 210-6352
Référence fabricantX187B
MarqueOEP
59,25 €
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600Ω 50kΩ 30.9Ω - - 1520Ω 34 (Dia.) x 31mm Chassis Mount Termination Wire 100g 31mm 34mm - -
N° de stock RS 210-6380
Référence fabricantR/Z1606
MarqueOEP
8,11 €
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800Ω 800Ω 109Ω 2mW - 134Ω 18 x 12.7 x 18mm Through Hole - - 18mm - 18mm 12.7mm
N° de stock RS 210-6532
Référence fabricantD29A100
MarqueOEP
30,33 €
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- 4 → 16Ω 191.5Ω 1 W, 2 W, 5 W, 15 W, 30 W - 0.2Ω 105.5 x 65.5 x 58mm Chassis Mount - 1kg 58mm - 105.5mm 65.5mm
N° de stock RS 123-7240
Référence fabricantD29A09F
MarqueOEP
42,43 €
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6.6kΩ 3.75 Ω, 7.5 Ω, 15 Ω 294.7Ω 10W - 682mΩ 76.8 x 64 x 64mm Panel Mount Solder 860g 64mm - 76.8mm 64mm
N° de stock RS 123-7199
Référence fabricantA187A11C
MarqueOEP
29,55 €
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577Ω 1 + 1kΩ 49.8Ω - - 48.5 (Secondary 1) Ω, 50 (Secondary 2) Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
N° de stock RS 123-7234
Référence fabricantZ30A18C
MarqueOEP
35,05 €
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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
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 168-3112
Référence fabricant749196228
3,314 €
Each (On a Reel of 400)
Unité
- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
N° de stock RS 210-6374
Référence fabricantE187B
MarqueOEP
10,02 €
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3kΩ 250 Ω, 500 Ω 80Ω 5mW - 46Ω 27 x 20 x 21mm PCB Mount - - 21mm - 27mm 20mm