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 anotherThere 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 doesnt 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 Stock No. 210-6475
Mfr. Part No.N35A002F
BrandOEP
HK$177.78
Each
units
4 → 15kΩ 3 → 15Ω 1012Ω 3.5W 40mA 1.5Ω 74 x 41.5 x 36mm Chassis Mount - 250g 36mm - 74mm 41.5mm
RS Stock No. 210-6431
Mfr. Part No.A262A6E
BrandOEP
HK$139.22
Each
units
150Ω 150Ω 15Ω 1mW Hz @ 30, 100mW Hz @ 300 - 20Ω 28 x 22 x 23mm Through Hole Pin - 23mm - 28mm 22mm
RS Stock No. 210-6447
Mfr. Part No.A262A7E
BrandOEP
HK$139.22
Each
units
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 Stock No. 210-6469
Mfr. Part No.A262CAN
BrandOEP
HK$60.75
Each
units
- - - - - - 29 x 24 x 23mm - - 16g 23mm - 29mm 24mm
RS Stock No. 210-6481
Mfr. Part No.TF021
BrandOEP
HK$113.71
Each
units
- 0.39Ω 2W - 0.47Ω 65 x 40 x 37mm Chassis Mount - 130g 37mm - 65mm 40mm
RS Stock No. 210-6419
Mfr. Part No.A262A2E
BrandOEP
HK$155.96
Each
units
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 Stock No. 210-6352
Mfr. Part No.X187B
BrandOEP
HK$616.16
Each
units
600Ω 50kΩ 30.9Ω - - 1520Ω 34 (Dia.) x 31mm Chassis Mount Termination Wire 100g 31mm 34mm - -
RS Stock No. 210-6532
Mfr. Part No.D29A100
BrandOEP
HK$315.40
Each
units
- 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
RS Stock No. 667-6076
Mfr. Part No.Z218A2E
BrandOEP
HK$114.40
Each
units
600Ω - 60Ω - - 165Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS Stock No. 667-5962
Mfr. Part No.CN006
BrandOEP
HK$102.96
Each
units
- - - - - - 34.7 x 15.5 x 28.2mm - - - 28.2mm - 34.7mm 15.5mm
RS Stock No. 106-8576
Mfr. Part No.DA101MC
HK$12.583
Each (In a Tube of 50)
units
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS Stock No. 210-6526
Mfr. Part No.N35A001F
BrandOEP
HK$179.49
Each
units
- 37Ω 10W - 0.5Ω 88 x 50 x 44mm Chassis Mount - 400g 44mm - 88mm 50mm
RS Stock No. 800-4347
Mfr. Part No.DA101MC
HK$13.38
Each
units
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS Stock No. 210-6403
Mfr. Part No.A262A1E
BrandOEP
HK$147.12
Each
units
150Ω 3.75Ω 10.3Ω - - 0.37Ω 27.94 x 22 x 22.9mm Through Hole - - 22.9mm - 27.94mm 22mm
RS Stock No. 667-6082
Mfr. Part No.Z218A7E
BrandOEP
HK$114.40
Each
units
600Ω - 171Ω - - 234Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS Stock No. 210-6368
Mfr. Part No.E187A
BrandOEP
HK$109.48
Each
units
800Ω 800Ω 63Ω - - 84Ω 20.5 x 17 x 16mm Through Hole - - 16mm - 20.5mm 17mm
RS Stock No. 715-6911
Mfr. Part No.DA103C
HK$13.21
Each
units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 210-6425
Mfr. Part No.A262A3E
BrandOEP
HK$147.12
Each
units
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 Stock No. 106-8577
Mfr. Part No.DA103C
HK$12.583
Each (In a Tube of 50)
units
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS Stock No. 667-5950
Mfr. Part No.Z3002E
BrandOEP
HK$222.28
Each
units
10kΩ 10kΩ 2.1kΩ - - 2.2kΩ 32 x 15 x 27mm Through Hole - - 27mm - 32mm 15mm
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