Peer-to-peer, engineer-to-engineer questions and answers from the EDABoard.com engineering community around power electronics. Click the “Read more” link and follow the entire conversation and maybe add your two cents by logging in to EDAboard.com XFMR winding optimization for DC resistance – I am asking about the design of the windings of a high-frequency transformer. The point […]
varistors
Radial leaded MOV’s for general purpose overvoltage protection
Stackpole’s RV Series of radial leaded metal oxide varistors is available in a wide range of disk sizes and working voltages designed for general purpose overvoltage protection. The RV Series is UL1449 certified and offers disk sizes from 5mm up to 20mm with peak current ratings up to 18,000 amps and energy handling up to […]
Data book covers metal oxide varistors
TDK Corporation presents the fully revised data book for EPCOS SIOV metal oxide varistors for overvoltage protection. In addition to the extended portfolio of leaded disk varistors, the data book contains the new SNF types with an extended temperature range of between -40 °C and +125 °C. AEC-Q200-qualified automotive types of these varistors are now also available. […]
Designing overvoltage protection for fire detection equipment
Author: Sonja Brown, EPCOS, a TDK Group Company The analyst firm Gartner predicts there will be nearly 25 billion IoT-enabled devices by 2020 – many of which will take the form of home automation, safety, security, appliance and entertainment equipment. A recent article on Smart Home technology cited a Coldwell Banker Real Estate survey that […]
Metal oxide disk varistors work up to 105 °C
TDK Corporation presents leaded EPCOS metal oxide disk varistors, which have now been approved for an increased operating temperature of 105 °C (previously 85 °C). The reason for this is the recertification of the B722* series of varistors in accordance with UL 1449, 4th Edition, and IEC 61051. Raising the permissible operating temperature to 105 […]
Spice models help design with automotive varistors
AVX Corporation has released new SPICE models for its CapGuard™ Automotive and TransGuard Automotive Series multilayer varistors. Designed to enable shorter, more cost-effective development cycles with more first-pass prototype successes, SPICE models allow electronic design engineers to quickly, easily, and effectively evaluate the integrity of circuit designs, accurately simulate their performance, and identify and correct potentially […]
High-power varistors work at 125°C with 2.5 kV isolation voltage
Littelfuse, Inc., the global leader in circuit protection, today introduced its first varistor series designed for high power applications that can operate at ambient temperatures up to 125°C with 2500V isolation voltage. The HMOV™ Varistor Series’ high operating temperature is an advance made possible through the use of a new silicone coating technology. Competitive epoxy-coated […]
26-VDC varistors handle EMI/RFI filtering, ESD protection
AVX Adds 26VDC Components to its Proven, Dual-Function TransFeed™ & TransFeed Automotive Series Varistors AVX Corporation, a leading manufacturer of passive components and interconnect solutions, has added new 26VDC components to its proven, dual-function TransFeed™ and TransFeed Automotive Series varistors, extending the series’ superlative EMI/RFI filtering and bi-directional ESD protection capabilities to an even broader […]
