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 168-3326
製造零件編號749196507
HK$82.00
單位
- - 36mΩ - 2.3A - 21.5 x 21 x 12mm Surface Mount Solder - 12mm - 21.5mm 21mm
全新
RS庫存編號 188-8843
製造零件編號2337822-2
HK$35.462
個 (在毎卷:450)
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 168-3193
製造零件編號749196508
HK$99.26
單位
- - 102mΩ - 1.35A - 21.5 x 21 x 12mm Surface Mount Solder - 12mm - 21.5mm 21mm
RS庫存編號 106-8579
製造零件編號DA102C
HK$10.86
毎管:50 個
單位
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS庫存編號 168-3108
製造零件編號749196138
HK$45.23
個 (在毎卷:500)
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 168-3218
製造零件編號749196228
HK$78.47
單位
- - 200mΩ - 800mA - 16.3 x 12 x 7.4mm Surface Mount Solder - 7.4mm - 16.3mm 12mm
RS庫存編號 123-7240
製造零件編號D29A09F
BrandOEP
HK$326.80
單位
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
RS庫存編號 168-3130
製造零件編號749196547
HK$61.557
個 (在毎卷:120)
單位
- - 36mΩ - 2.3A - 21.5 x 21 x 12mm Surface Mount Solder - 12mm - 21.5mm 21mm
RS庫存編號 123-7235
製造零件編號Z30A23C
BrandOEP
HK$302.17
單位
200 Ω, 800 Ω 5kΩ 42 Ω, 45 Ω - - 929Ω 36 x 30 x 16mm Through Hole PC Pin 57g 16mm - 36mm 30mm
全新
RS庫存編號 188-8847
製造零件編號2337824-4
HK$107.399
個 (在毎卷:350)
單位
- - - - - - 31.3 x 12.2 x 6.99mm PCB Mount PC Pin - 6.99mm - 31.3mm 12.2mm
RS庫存編號 123-7231
製造零件編號Z1687E
BrandOEP
HK$78.46
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 168-3246
製造零件編號749010310
HK$43.38
單位
- - - - - - 12.7 x 8.67 x 4mm Surface Mount Solder - 4mm - 12.7mm 8.67mm
RS庫存編號 123-7215
製造零件編號J30A11C
BrandOEP
HK$380.21
單位
150 Ω, 600 Ω 3.75 kΩ, 15 kΩ 99Ω - - 308Ω 36 x 30 x 25mm Through Hole PC Pin 110g 25mm - 36mm 30mm
RS庫存編號 168-3298
製造零件編號749196128
HK$61.71
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 168-3109
製造零件編號749196148
HK$37.03
個 (在毎卷:500)
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 123-7210
製造零件編號A262A47E
BrandOEP
HK$139.59
單位
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
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
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 667-6050
製造零件編號Z21808C
BrandOEP
HK$215.38
單位
150Ω - 45Ω - - 1.5kΩ 25 x 18.5 x 19.3mm Through Hole - - 19.3mm - 25mm 18.5mm
全新
RS庫存編號 188-9071
製造零件編號2337824-2
HK$95.655
/個 (每包:2個)
單位
- - - - - - 31.3 x 12.2 x 6.99mm PCB Mount PC Pin - 6.99mm - 31.3mm 12.2mm