LEM's ART and ARU series are Class 0.5 Rogowski coils for electronic measurement of AC current with galvanic separation between the primary power circuit (power) and the secondary measurement circuit.
Würth Elektronik's WE-STST Super Tiny Signal Transformers for LAN interfaces feature a maximum component height of 2.9 mm and can be used in up to 1000Base-T applications with at least 350 µH inductance.
The WE-LAN AQ is a LAN transformer manufactured by a fully automated production process. Its innovative coil winding technique reduces the electrical variation while improving performance over a wide frequency range.
Würth Elektronik has released additional G.fast transformers to its MID-DSLSCK family, approved for use with Sckipio chipsets.
The magnetically shielded 1:1 transformers, with an isolation voltage of 2000 V, offer low losses and a low level of stray inductance.
TDK has released a series of EPCOS transformers designed for an output of up to 60 W, which are therefore suitable for PoE++ according to IEEE 802.3bt.
STMicroelectronics has introduced a matched balun for its S2-LP 868-927 MHz low-power radio transceiver to help engineers save board space and minimise RF-circuit design challenges in size-conscious products like IoT sensors, smart meters, alarms, remotes, building automation and industrial controls.
Researchers have developed a method of looking inside iron core transformers, enabling them to see the tiny magnetic structures inside a transformer at work during the transforming process — a step towards building more efficient transformers in the future.
Vishay Intertechnology has introduced a planar transformer offering power from 1 to 3 kW in a compact 70 x 53 x 22 mm size. Compared to devices built on traditional winding technology, the Vishay Sfernice PLA51 is said to deliver the same power transfer/conversion while offering higher efficiency and a lower weight and profile.
The SN6505 is a low-noise, low-EMI push-pull transformer driver which is specifically designed for small form-factor, isolated power supplies. It drives low-profile, centre-tapped transformers from a 2.25 to 5 VDC power supply.
The Mini-Circuits STYX4-13HP+ surface-mount 4:1 transformer handles 10 W RF input power from 30 to 1000 MHz. It supports high power requirements in a shielded package measuring only 0.43 x 0.69 x 0.42″.
The Mini-Circuits Z7550-NMNF+ connectorised matching transformer is suitable for many applications, from DC to 2300 MHz, where 50 to 75 Ω matching is required.
STMicroelectronics 2.4 GHz balun design for Nordic Semiconductor nRF51 and nRF24 series transceivers and SoCs27 February, 2013
Ultralow power RF specialist Nordic Semiconductor has announced that STMicroelectronics has developed an integrated 2.4 GHz balun design for Nordic’s nRF51 and nRF24 series transceivers and SoCs (systems-on-chip) that eliminates the need for RF antenna matching circuitry comprising up to eight passive components (capacitors and inductors) and the interconnections between them.
A 1100 kV ultra-high-voltage direct current converter transformer, tested by ABB, is claimed to break the record for the highest DC voltage levels ever.
Maxim has introduced the MAX13256, an H-bridge transformer driver with a wide input-voltage range for isolated power supplies.