Inductors & Cores

Featuring a specialist range of soft ferrite, amorphous and nanocrystalline laminations and powder inductors designed for high frequency applications.

Five brown inductors on a white background

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High quality, durable components

GD Rectifiers is a leading distributor of torodial, soft ferrite, amorphous and nanocrystalline laminated cores and powder cores. We offer a wide range of transformer and mu metal cores from Telcon and Sirio.

Sirio offers a wide range of soft ferrite, amorphous and nanocrystalline laminations and powder inductors designed for high frequency applications. Inductors are usually employed as DC output stage chokes, but are also used for applications that require power factor correction filters and resonance tanks for soft switching converters.

Sirio’s inductors are often utilised in industrial applications that require dedicated inductors which is why they offer a customised choke development service instead of a standard catalogue. Sirio’s bespoke design and manufacturing facility for inductors and chokes offers high quality, durable components that are competitively priced.

 

Toroidal Cores

Telcon high permeability strip wound cores are manufactured to the highest international standards, in a range of alloys and sizes developed to meet the most stringent specifications, and are used in a variety of applications. Core manufacturing, including winding and heat treatment, is carried out and controlled using processes and machines specially developed by Telcon. There are a variety of finishes to the cores from epoxy resin coated, impregnated, loctite, plain or cased.

 

Toroidal Cores group shot

 

Soft Ferrite Cores

Soft ferrite is the most popular and cost effective material used in high frequency applications.

In high frequency power conversion system ferrite materials have saturation flux in the range of 0,3¸0,5 Tesla and some thousands of relative permeability. Therefore, ferrite materials have quite low saturation flux, that is the most critical limit for inductive components, especially in case of high DC currents or high overcurrent risk. Ferrite materials for power application have the great advantage of low losses level on a wide frequency range.

Soft ferrite cores

 

Amorphous and Nanocrystalline Laminated Cores

Amorphous and nanocrystalline laminations are obtained by a special rapid quenching technology. Typical thicknesses of those laminations are few tens of μm. Amorphous cores are suitable for output inductors, when high DC current, low ripple current, extremely compact dimensions. High saturation flux level is suitable for high currents and low ripple current doesn’t cause critical core losses.

Nanocrystalline cores have vary low losses, even for high variation of magnetic flux, so they can be used for switching transformers too.

Amorphous and Nanocrystalline Laminated Cores

Powder Cores

Powder cores differ in chemical composition. Powder cores are pressed with an organic or inorganic binder, that is responsible for storage of energy. Each material, identified by the producer with a code or a commercial name, possesses its own characteristics in terms of permeability, saturation flux, specific losses. They are typically very stable with the temperature and they can be used in critical environment applications. Powder cores are more expensive than ferrite cores, but normally cheaper than amorphous and nanocrystalline ones.

 

For further information on Inductors and cores please call: 01444 243 452 or email your enquiry to: enquiries@gdrectifiers.co.uk.