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 210-6475
製造零件編號N35A002F
BrandOEP
HK$130.71
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 210-6431
製造零件編號A262A6E
BrandOEP
HK$111.58
單位
150Ω 150Ω 15Ω 1mW Hz @ 30, 100mW Hz @ 300 - 20Ω 28 x 22 x 23mm Through Hole Pin - 23mm - 28mm 22mm
RS庫存編號 210-6469
製造零件編號A262CAN
BrandOEP
HK$51.29
單位
- - - - - - 29 x 24 x 23mm - - 16g 23mm - 29mm 24mm
RS庫存編號 210-6419
製造零件編號A262A2E
BrandOEP
HK$155.96
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 210-6447
製造零件編號A262A7E
BrandOEP
HK$177.58
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 210-6481
製造零件編號TF021
BrandOEP
HK$79.97
單位
- 0.39Ω 2W - 0.47Ω 65 x 40 x 37mm Chassis Mount - 130g 37mm - 65mm 40mm
RS庫存編號 210-6352
製造零件編號X187B
BrandOEP
HK$381.79
單位
600Ω 50kΩ 30.9Ω - - 1520Ω 34 (Dia.) x 31mm Chassis Mount Termination Wire 100g 31mm 34mm - -
RS庫存編號 800-4347
製造零件編號DA101MC
HK$15.14
單位
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS庫存編號 667-5962
製造零件編號CN006
BrandOEP
HK$72.29
單位
- - - - - - 34.7 x 15.5 x 28.2mm - - - 28.2mm - 34.7mm 15.5mm
RS庫存編號 667-6076
製造零件編號Z218A2E
BrandOEP
HK$86.28
單位
600Ω - 60Ω - - 165Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS庫存編號 106-8576
製造零件編號DA101MC
HK$9.897
毎管:50 個
單位
- - - - - - 9.52 x 9 x 6.35mm Surface Mount - 0.9g 6.35mm - 9.52mm 9mm
RS庫存編號 210-6526
製造零件編號N35A001F
BrandOEP
HK$120.57
單位
- 37Ω 10W - 0.5Ω 88 x 50 x 44mm Chassis Mount - 400g 44mm - 88mm 50mm
RS庫存編號 210-6532
製造零件編號D29A100
BrandOEP
HK$225.90
單位
- 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庫存編號 106-8577
製造零件編號DA103C
HK$11.95
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 667-5950
製造零件編號Z3002E
BrandOEP
HK$164.66
單位
10kΩ 10kΩ 2.1kΩ - - 2.2kΩ 32 x 15 x 27mm Through Hole - - 27mm - 32mm 15mm
RS庫存編號 210-6368
製造零件編號E187A
BrandOEP
HK$104.00
單位
800Ω 800Ω 63Ω - - 84Ω 20.5 x 17 x 16mm Through Hole - - 16mm - 20.5mm 17mm
RS庫存編號 715-6911
製造零件編號DA103C
HK$14.49
單位
- - - - - - 9 x 6.35 x 10.16mm Through Hole - - 10.16mm - 9mm 6.35mm
RS庫存編號 667-6082
製造零件編號Z218A7E
BrandOEP
HK$77.65
單位
600Ω - 171Ω - - 234Ω 21.5 x 16.3 x 18mm Through Hole - - 18mm - 21.5mm 16.3mm
RS庫存編號 667-6044
製造零件編號Z21805C
BrandOEP
HK$175.95
單位
500Ω 1kΩ 37Ω - - 172Ω 25 x 19.3 x 18.5mm Surface Mount - 28g 18.5mm - 25mm 19.3mm
RS庫存編號 210-6403
製造零件編號A262A1E
BrandOEP
HK$133.56
單位
150Ω 3.75Ω 10.3Ω - - 0.37Ω 27.94 x 22 x 22.9mm Through Hole - - 22.9mm - 27.94mm 22mm