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 Price Primary Impedance Secondary Impedance Primary DC Resistance Power Rating Current Rating Secondary DC Resistance Dimensions Mounting Type Termination Type Weight Depth Diameter Length Width
RS庫存編號 210-6481
製造零件編號TF021
BrandOEP
TWD448.00
單位
- 0.39Ω 2W - 0.47Ω 65 x 40 x 37mm Chassis Mount - 130g 37mm - 65mm 40mm
RS庫存編號 210-6419
製造零件編號A262A2E
BrandOEP
TWD706.00
單位
150Ω 600Ω 10.3Ω 1mW Hz @ 30, 100mW Hz @ 300 - 59.5Ω 27.94 x 22 x 22.9mm Through Hole Pin - 22.9mm - 27.94mm 22mm
RS庫存編號 123-7237
製造零件編號V78A01F
BrandOEP
TWD2,756.00
單位
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
RS庫存編號 667-5962
製造零件編號CN006
BrandOEP
TWD405.00
單位
- - - - - - 34.7 x 15.5 x 28.2mm - - - 28.2mm - 34.7mm 15.5mm
RS庫存編號 210-6425
製造零件編號A262A3E
BrandOEP
TWD612.00
單位
150Ω 600Ω 20.6Ω 1mW Hz @ 30, 100mW Hz @ 300 - 1143Ω 28 x 22 x 23.2mm Through Hole Pin - 23.2mm - 28mm 22mm
RS庫存編號 667-6088
製造零件編號Z218A6E
BrandOEP
TWD450.00
單位
600Ω - 46Ω - - 60Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS庫存編號 210-6447
製造零件編號A262A7E
BrandOEP
TWD592.00
單位
600Ω 600Ω 42Ω 1mW Hz @ 30, 2.5mW Hz @ 50, 100mW Hz @ 300 - 58Ω 28 x 22 x 23.2mm Through Hole Pin - 23.2mm - 28mm 22mm
RS庫存編號 210-6497
製造零件編號B18A001F
BrandOEP
TWD444.00
單位
- 320Ω 2W 500mA 0.7Ω 44.5 x 36 x 32.9mm Chassis Mount - 190g 32.9mm - 44.5mm 36mm
RS庫存編號 667-6066
製造零件編號Z218A3C
BrandOEP
TWD708.00
單位
1.8 kΩ, 600 Ω - 47Ω - - 1.34 kΩ, 1.46 kΩ 25.2 x 17.8 x 19mm Through Hole - - 19mm - 25.2mm 17.8mm
RS庫存編號 667-6038
製造零件編號Z21807E
BrandOEP
TWD534.00
單位
10 → 20kΩ - 1.8kΩ - - 0.715 kΩ, 1.1 kΩ 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS庫存編號 123-7242
製造零件編號R35A03F/4
BrandOEP
TWD1,712.00
單位
5kΩ 8 Ω, 16 Ω 365Ω 3W - 900mΩ 87.3 x 52 x 49.5mm Panel Mount Solder 465g 49.5mm - 87.3mm 52mm
RS庫存編號 123-7202
製造零件編號A187A14C
BrandOEP
TWD1,390.00
單位
150 Ω, 600 Ω 10kΩ 38Ω - - 1.085kΩ 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
RS庫存編號 210-6526
製造零件編號N35A001F
BrandOEP
TWD707.00
單位
- 37Ω 10W - 0.5Ω 88 x 50 x 44mm Chassis Mount - 400g 44mm - 88mm 50mm
RS庫存編號 210-6352
製造零件編號X187B
BrandOEP
TWD2,426.00
單位
600Ω 50kΩ 30.9Ω - - 1520Ω 34 (Dia.) x 31mm Chassis Mount Termination Wire 100g 31mm 34mm - -
RS庫存編號 168-3218
製造零件編號749196228
TWD320.00
單位
- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
RS庫存編號 123-7238
製造零件編號CUI30A02E
BrandOEP
TWD1,094.00
單位
70 (Parallel) Ω, 280 (Series) Ω 2.4 (Series) kΩ, 600 (Parallel) Ω 3.13 + 3.13Ω 2W - 20.8 + 20.8Ω 53.4 x 44.4 x 22.5mm Through Hole PC Pin 185g 22.5mm - 53.4mm 44.4mm
RS庫存編號 123-7231
製造零件編號Z1687E
BrandOEP
TWD354.00
單位
600Ω 1.2kΩ 117Ω 2mW - 262Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
RS庫存編號 168-3112
製造零件編號749196228
TWD206.90
個 (在毎卷:400)
單位
- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
RS庫存編號 210-6475
製造零件編號N35A002F
BrandOEP
TWD700.00
單位
4 → 15kΩ 3 → 15Ω 1012Ω 3.5W 40mA 1.5Ω 74 x 41.5 x 36mm Chassis Mount - 250g 36mm - 74mm 41.5mm
RS庫存編號 123-7239
製造零件編號CUI30A04E
BrandOEP
TWD1,094.00
單位
150 (Parallel) Ω, 600 (Series) Ω 150 (Parallel) Ω, 600 (Series) Ω 9 + 9Ω 2W - 11.4 + 11.4Ω 53.4 x 44.4 x 22.5mm Through Hole PC Pin 185g 22.5mm - 53.4mm 44.4mm