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, […]
Transformers
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 […]
Transformers meet PoE, PoE+, UPoE specs over 3 to 60-W range
Premier Magnetics, introduces its expanded line of low-cost, high-performance transformers designed to support the full range of Power-over-Ethernet (PoE) applications from IEEE 802.3af (15.4W, max), IEEE 802.3at (30W), Cisco UPoE and other higher-power PoE extensions up to 60W. The low-profile, surface-mount devices operate over a wide frequency range, provide high isolation (1500V) and are available in […]
Offline transformers for LLC resonant half-bridge topology
Wurth Electronics Midcom is proud to announce the release of MID-LLCEPC; a new series of offline transformers using LLC Resonant Half-Bridge topology. With the low switching losses of the LLC topology, the MID-LLCEPC series yields very good efficiency, which makes the topology attractive with higher power levels. “Our package used for this series was designed […]
Reverse polarity protection: how can you provide it?
The reverse connection of a circuit to its DC power source, whether it’s a battery or power supply, can damage and even destroy the electronics. For this reason, many connectors are “keyed” to ensure correct connection. But there are many connections which are directly hard-wired using wires inserted into screw terminals, or ring or spade […]
Low-profile gate drive transformers feature 1.5 kV isolation
The new MID-GDT transformer series is now available from Wurth Electronics Midcom. These low profile gate drive transformers are surface mount with a maximum height of 5.38mm, and operate with a voltage-time product of at least 70 Vµs on secondary windings. These pick-and-placeable transformers feature 1500V isolation, and have an operating temperature of -40° to […]
Top power electronics threads on EDAboard.com – April
(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.) Cheap mains conducted emissions tester? – Our direct drive, 100W offline, non-isolated LED driver failed EMC […]