Toroidal Transformers

Toroidal transformers are magnetic core transformers manufactured within a toroidal (ring or doughnut) shape.

How do Toroidal Transformers they work?


Transformers use the principles of induction to transfer energy in the form of electricity via their internal coli. They make it possible for devices with different requirements to run off the same source of voltage. They are able to step the voltage up or down as needed. They can also increase and decrease current and alter electrical energy in other ways.
Toroidal transformers can be open or encapsulated, and some models are completed with PCB mounting pins.

Benefits of Toroidal Transformers


  • Transformers take up less space than their traditional square counterparts using less real estate. Some manufacturers suggest that fitting a toroidal transformer with flying leads instead of terminal blocks can save you up to 60% space.

  • These transformers are easy to mount, some even just require a single bolt to fix them in place.

  • They have flexible dimensions.

  • Toroidal transformers offer great noise reduction and emit less EMI (electromagnetic interference) than standard transformers.

  • They have a low stray field.

  • They are quieter to run than standard transformers and create less hum noise.

  • They present excellent value for money. Toroidal cores take less energy to maintain a magnetic field, and therefore use less power.

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Description Price Primary Voltage Rating Secondary Voltage Rating Power Rating Number of Outputs Secondary Current Height Weight Diameter Dimensions Minimum Operating Frequency Maximum Operating Frequency Mounting Type Termination Type Fixing Hole Diameter
RS Stock No. 752-9242
Mfr. Part No.RKD 1000/2x115
BrandBlock
£145.42
Each
Units
115 V ac, 230 V ac 2 x 115V ac 1000VA 2 - - 8.3kg 168mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9393
Mfr. Part No.RKD 400/2x18
BrandBlock
£73.90
Each
Units
115V ac, 230V ac 2 x 18V ac 400VA 2 - - 4.1kg 128mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9249
Mfr. Part No.RKD 100/2x24
BrandBlock
£34.02
Each
Units
115V ac, 230V ac 2 x 24V ac 100VA 2 - - 1.2kg 92mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9410
Mfr. Part No.RKD 500/2x24
BrandBlock
£87.31
Each
Units
115V ac, 230V ac 2 x 24V ac 500VA 2 - - 4.8kg 140mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9426
Mfr. Part No.RKD 60/2x12
BrandBlock
£29.14
Each
Units
115 V ac, 230 V ac 2 x 12V ac 60VA 2 - - 750g 80mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9371
Mfr. Part No.RKD 3000/2x115
BrandBlock
£348.15
Each
Units
115 V ac, 230 V ac 2 x 115V ac 3000VA 2 - - 21kg 215mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9365
Mfr. Part No.RKD 300/2x12
BrandBlock
£62.13
Each
Units
115V ac, 230V ac 2 x 12V ac 300VA 2 - - 3kg 125mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9340
Mfr. Part No.RKD 250/2x18
BrandBlock
£54.59
Each
Units
115V ac, 230V ac 2 x 18V ac 250VA 2 - - 2.5kg 114mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9233
Mfr. Part No.RKD 100/2x12
BrandBlock
£34.02
Each
Units
115V ac, 230V ac 2 x 12V ac 100VA 2 - - 1.2kg 92mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9261
Mfr. Part No.RKD 120/2x24
BrandBlock
£38.46
Each
Units
115V ac, 230V ac 2 x 24V ac 120VA 2 - - 1.4kg 94mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9369
Mfr. Part No.RKD 300/2x18
BrandBlock
£62.13
Each
Units
115V ac, 230V ac 2 x 18V ac 300VA 2 - - 3kg 125mm - 50Hz 60Hz - Leads -
RS Stock No. 123-3096
Mfr. Part No.RKD 60/2x6
BrandBlock
£30.71
Each
Units
2 x 115V ac 2 x 6V ac 60VA - - - - - 83 (Dia) x 38mm 50Hz 60Hz Surface Mount Lead Wire -
RS Stock No. 752-9319
Mfr. Part No.RKD 200/2x24
BrandBlock
£47.99
Each
Units
115V ac, 230V ac 2 x 24V ac 200VA 2 - - 2.2kg 114mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9343
Mfr. Part No.RKD 250/2x24
BrandBlock
£54.59
Each
Units
115V ac, 230V ac 2 x 24V ac 250VA 2 - - 2.5kg 114mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9397
Mfr. Part No.RKD 400/2x24
BrandBlock
£73.90
Each
Units
115V ac, 230V ac 2 x 24V ac 400VA 2 - - 4.1kg 128mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9296
Mfr. Part No.RKD 20/2x15
BrandBlock
£27.41
Each
Units
115 V ac, 230 V ac 2 x 15V ac 20VA 2 - - 350g 61mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9463
Mfr. Part No.RKD 800/2x115
BrandBlock
£130.76
Each
Units
115V ac, 230V ac 2 x 115V ac 800VA 2 - - 7kg 170mm - 50Hz 60Hz - Leads -
RS Stock No. 752-9432
Mfr. Part No.RKD 60/2x24
BrandBlock
£29.72
Each
Units
115 V ac, 230 V ac 2 x 24V ac 60VA 2 - - 750g 80mm - 50Hz 60Hz - Leads -
RS Stock No. 123-3103
Mfr. Part No.RKD 160/2x35
BrandBlock
£42.77
Each
Units
2 x 115V ac 2 x 35V ac 160VA - - - - - 107 (Dia.) x 50mm 50Hz 60Hz Surface Mount Lead Wire -
RS Stock No. 752-9416
Mfr. Part No.RKD 50/2x24
BrandBlock
£30.41
Each
Units
115 V ac, 230 V ac 2 x 24V ac 50VA 2 - - 700g 77mm - 50Hz 60Hz - Leads -