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 123-7233
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 123-7230
製造零件編號Z1686E
BrandOEP
HK$78.46
單位
600Ω 900Ω 117Ω 2mW - 180Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
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 168-3105
製造零件編號749196108
HK$46.319
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 106-8578
製造零件編號DA101C
HK$11.95
毎管:50 個
單位
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
全新
RS庫存編號 188-9061
製造零件編號2337826-1
HK$133.255
/個 (每包:2個)
單位
- - - - - - 31 x 12.25 x 6.99mm PCB Mount PC Pin - 6.99mm - 31mm 12.25mm
RS庫存編號 168-3211
製造零件編號749196538
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 172-8670
製造零件編號SM-LP-5001E
BrandBourns
HK$11.354
個 (在毎卷:400)
單位
- - - - - - 12.8 x 7.5 x 9mm Surface Mount Solder - 9mm - 12.8mm 7.5mm
RS庫存編號 168-3110
製造零件編號749196208
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 168-3246
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 168-3257
製造零件編號749196308
HK$77.44
單位
- - 145mΩ - 830mA - 17.5 x 16 x 9mm Surface Mount Solder - 9mm - 17.5mm 16mm
RS庫存編號 123-7242
製造零件編號R35A03F/4
BrandOEP
HK$329.09
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 851-3686
製造零件編號Z1604
BrandOEP
HK$75.47
單位
600Ω 600Ω 109Ω 2mW - 134Ω 18 x 12.6 x 18mm Through Hole PC Pin - 18mm - 18mm 12.6mm
RS庫存編號 123-7222
製造零件編號Z1675E
BrandOEP
HK$78.46
單位
75Ω 75Ω 15.6Ω 2mW - 19.6Ω 18 x 18 x 15mm Through Hole PC Pin 14g 15mm - 18mm 18mm
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 168-3219
製造零件編號749196518
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 123-7237
製造零件編號V78A01F
BrandOEP
HK$488.84
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
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
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 123-7217
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