Category | Transformers

InDUR Nonlinear and SiFe – Special AC Filter and DC Power Inductors

Posted on 24 November 2014

      They are based on State-of-the-Art Powder Materials and Silicon Iron Steel By Tobias Stolzke, Alexander Stadler and Christof Gulden, STS Spezial-Transformatoren Stockach GmbH & Co.KG, Am Krottenbühl 1, 78333 Stockach, Germany In many power electronics topologies a certain drop of the choke’s inductance can be accepted at higher current levels which offers [...]

InDUR Power Inductors with Minimum Size and Weight for DC and AC Filter Applications

Posted on 09 January 2014

      Improving power density is a permanent challenge of R&D in power electronics. A survey of modern power electronic circuits shows that further optimization has to be based on the passives and particularly on the inductive components. By Alexander Stadler and Christof Gulden, STS Spezial-Transformatoren Stockach GmbH & Co. KG, Am Krottenbühl 1, [...]

Optimizing Three-Phase Planar Transformer Construction

Posted on 30 August 2012

       Production costs are reduced as well as transformer efficiency is increased A three-phase transformer with flat conductor layers is proposed in this article. This arrangement is used for high current density transformers. Cost effectiveness in planar magnetic are related with the optimization in the number of layers in each winding. This fact [...]

Planar Transformers are Essential for Truly Efficient Electric/Hybrid Vehicles

Posted on 23 July 2012

      Weight advantage makes them more efficient than conventional ‘wire-wound’ equivalents When the first mass-produced motor car, the ‘Model T’, rolled off the production line in 1908, Gerald Ford famously told the world that “you can have it in any colour, as long as it’s black”. Today, a century later, the motor car [...]

Power Planar Magnetics and Hybrid Electric Vehicles

Posted on 23 July 2012

      The HEVs are here – and more are coming The electronic circuits in a hybrid electric vehicle must operate in an extreme temperature environment with significant weight and size restrictions. The real advantages to using power planar magnetics in the electronic circuits of hybrid electric vehicles are described and quantified. By: Jim [...]

How to Select an Off-The-Shelf Current Transformer

Posted on 01 September 2006

      A simple guideline can greatly help In electronic systems applications such as switch-mode power supplies, current transformers are generally used for control, circuit-protection, and monitoring features. By Ariel General, Senior Design Applications Engineer, Datatronics, Inc.   Engineers have relied on current sense transformers as the ‘gold standard’ for precise measurements in instrumentation [...]