The subject of current transformers is pretty big when you’re talking about inverters and other kinds of power electronics. Tamura’s Craig Simpson went through some examples of that kind of technology in a recent video. Tamura has been making current sensors for over 20 years and have developed quite a few different models of current […]
Surface-mount current-sense transformers handle 40 A at up to 500 kHz
Wurth Electronics Midcom has announced the release of additional Current Sense transformers to the MID-SNS family. “These surface mount transformers are designed to operate between 50khz to 500khz and sense up to 40A of current. The turns ratios offered are 1:50, 1:100, 1:150 and 1:200 with Inductances ranging from 1.4mH to 22.4mH. Compared to current sense […]
Isolation transformers feature touch-safe surfaces
Signal Transformer announces the EcoTrans Standard Series Transformers, which are used to step up or step down voltage, while keeping the mains and output circuits isolated through CE Certified Reinforced Insulation. The EcoTran Series is a UL Listed product to UL 5085-1, CE Compliant backed by TUV Rhineland and meets UL Insulation Class F, as well as […]
Transformers handle PoE++ power levels
A new series of EPCOS transformers is designed for an output of up to 60 W, which are therefore suitable for PoE++ according to IEEE 802.3bt. The new B82806D0060A** series comprises four types with different turns ratios for output voltages of 3.3, 5, 12, and 24 V. The SMD components have dimensions of 30x22x11.4 mm […]
Power Electronics Top Talks in October on EDABoard.com forums
(editor’s note: Intrigued by the problem? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum threads.) Switch design by using solid devices – I want to know how to design a solid static switch to replace […]
New transformer, toroidal packages highlighted in power components catalog
Wurth Electronics Midcom has announced the publication of the newest Capabilities Catalog. This comprehensive catalog includes capabilities for the design of custom transformers and toroids, the focus of the company for over 25 years. This catalog offers customers over 100 packages as the foundation for a custom design. Two new transformer packages, EPC40 and RM8, […]
Top power electronics threads on EDAboard.com – September
(editor’s note: Intrigued by these power electronics problems? Have a question or another solution? Then click the “Read more” link and follow the conversation on EDAboard.com or log in to EDAboard and participate in the power electronics forum threads.) AC DC full bridge power supply – I’m designing a variable output full bridge power supply […]
SMD transformers sport 1.5 kV isolation voltage, low core losses
Würth Elektronik eiSos presents a new line of transformers for SMT assembly – WE-FLEX HV (Flexible Transformer High Voltage). Like the WE-FLEX series of transformers, these excel because of their flexible capabilities in various applications making them ideally suited for fast prototyping. Different circuit configurations enable over 375 transformer solutions and around 125 choke solutions […]
Flyback transformer packaging eliminates need for flying leads
The new MID-OLRM extended rail RM8 transformer series for offline applications from Wurth Electronics Midcom is now available. “For the past 30 years, the RM packages have required flying leads to meet reinforced insulation and creepage and clearance distances. We decided to change this by adding an extended rail to the existing RM8 package; eliminating […]
Options for current sensing, Part 2
Part 1 of this FAQ discussed the issue of current measurement, and four transducers which can be used to measure current. The first two – shunt resistors and Hall-effect devices – can be used for AC or DC currents. We will now look at two other transducers – the Rogowski coil and the current transformer […]
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