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 123-7213
製造零件編號J30A04C
BrandOEP
HK$428.48
單位
150 Ω, 600 Ω 2.4kΩ 40Ω - - 432Ω 36 x 30 x 25mm Through Hole PC Pin 110g 25mm - 36mm 30mm
RS庫存編號 123-7239
製造零件編號CUI30A04E
BrandOEP
HK$228.12
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
RS庫存編號 168-3270
製造零件編號749196118
HK$81.96
單位
- - 344mΩ - 500mA - 12.9 x 9.2 x 6.2mm Surface Mount Solder - 6.2mm - 12.9mm 9.2mm
RS庫存編號 168-3112
製造零件編號749196228
HK$48.657
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 168-3125
製造零件編號749196518
HK$61.557
個 (在毎卷:120)
單位
- - 102mΩ - 1.35A - 21.5 x 21 x 12mm Surface Mount Solder - 12mm - 21.5mm 21mm
RS庫存編號 123-7205
製造零件編號A187A17C
BrandOEP
HK$234.49
單位
200Ω 600Ω 11.5Ω - - 42Ω 29.4 x 25 x 24.2mm Through Hole PC Pin 56g 24.2mm - 29.4mm 25mm
RS庫存編號 123-7233
製造零件編號Z30A11C
BrandOEP
HK$275.20
單位
150 Ω, 600 Ω 2.4 kΩ, 600 Ω 15 (Primary 1) Ω, 15 (Primary 2) Ω - - 74.2 (Secondary 1 and 2)Ω 36 x 30 x 16mm Through Hole PC Pin 57g 16mm - 36mm 30mm
RS庫存編號 168-3116
製造零件編號749196318
HK$48.05
個 (在毎卷:300)
單位
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
全新
RS庫存編號 188-9074
製造零件編號2337822-5
HK$100.905
/個 (每包:2個)
單位
- - - - - - 18.25 x 12.24 x 6.99mm PCB Mount PC Pin - 6.99mm - 18.25mm 12.24mm
RS庫存編號 123-7234
製造零件編號Z30A18C
BrandOEP
HK$275.20
單位
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
RS庫存編號 715-6914
製造零件編號DA101C
HK$14.72
單位
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS庫存編號 123-7217
製造零件編號K30A06C
BrandOEP
HK$377.49
單位
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
全新
RS庫存編號 188-8842
製造零件編號2337822-4
HK$48.014
個 (在毎卷:750)
單位
- - - - - - 12.7 x 8.7 x 5.95mm PCB Mount PC Pin - 5.95mm - 12.7mm 8.7mm
RS庫存編號 168-3301
製造零件編號749196338
HK$85.09
單位
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
RS庫存編號 168-3119
製造零件編號749196338
HK$48.05
個 (在毎卷:300)
單位
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
RS庫存編號 168-3229
製造零件編號749196238
HK$86.18
單位
- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
RS庫存編號 123-7226
製造零件編號Z1680E
BrandOEP
HK$78.46
單位
150Ω 150Ω 29.5Ω 2mW - 37.4Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
RS庫存編號 123-7228
製造零件編號Z1682E
BrandOEP
HK$78.46
單位
150Ω 600Ω 29.5Ω 2mW - 150Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
RS庫存編號 168-3313
製造零件編號749196348
HK$85.09
單位
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
RS庫存編號 210-6380
製造零件編號R/Z1606
BrandOEP
HK$80.50
單位
800Ω 800Ω 109Ω 2mW - 134Ω 18 x 12.7 x 18mm Through Hole - - 18mm - 18mm 12.7mm