Stackpole recently expanded the resistance value ranges of the 0201 chip size of the RNCF Series of precision thin film chip resistors. Resistance values from 49.9 ohm to 33K ohm are now available in tolerances as tight as 0.5% and TCR as low as 25 ppm. With the proliferation of consumer electronics and the desire […]
Power Components
OMEGA Announces the Next Generation Handheld Thermometers
OMEGA announces the next generation of Precision Digital Thermometers, the HH911T/HH912T Series. They are user configurable for Type K, J, T or E thermocouple probes to provide a wide range of temperature measurements from -250 to 1372°C (-418 to 2502°F). The HH911T (single input) and the HH912T (dual channel inputs with T1-T2 readings) provide dependable […]
Cylindrical supercapacitors target low-cost IoT apps
CAP-XX, a leading developer of supercapacitors that deliver peak power to support batteries, today launched its first compact cylindrical supercapacitors to provide high performance at low cost for less space-constrained devices. Combining its cylindrical supercapacitors with its existing thin prismatics that address ultra-space-constrained designs, CAP-XX now offers a wide range of small supercapacitors to power […]
What are amplifier classes and their relation to power efficiency (Part 2)?
In Part 1, we looked at Class A, B, AB, C, and D amplifiers. These designations are standardized, fully defined, and widely recognized. Now we’ll look at a few other topologies which are less well known but also used. The Class G amplifier is similar to the Class AB amplifier except that is uses two […]
Capacitors designed to smooth IGBT bus ripples in EVs, HEVs
AVX Corporation will launch two new capacitor series for EV/HEV applications during its exposition at this year’s Applied Power Electronics Conference and Exposition (APEC 2017), which will take place March 26 – 30 in Tampa, Florida. In addition to releasing the new FHC1 and FHC2 Series capacitors, which were especially designed for use in conjunction with […]
Power modules lessen the load on internal combustion engines
Integrated smart power modules will run mechanical loads that would otherwise sap fuel mileage. THOMAS YIM | ON SEMICONDUCTOR GOVERNMENT REGULATIONS are stimulating demands for more economical vehicles that produce not just fewer NOx pollutants, but also less CO2. Vehicle tax policies currently favor less polluting models, and car makers must cope with new legislation […]
Secrets of measuring
currents above 50 amps
There is an art to getting accurate readings of high current values. It pays to know a few of the tricks. GEORGES EL BACHA, EVAN SHORMAN, HARRY CHANDRA | ALLEGRO MICROSYSTEMS LLC IT CAN BE CHALLENGING to sense currents exceeding 50 A because the task often involves thermal management, must take place in a limited […]
Fusible wirewounds offer advanced pulse handling, failsafe operation
The WWF Series from Stackpole is a fusible wirewound technology. Wirewounds typically handle at least 5 times the pulse energy of similar film resistors. Although this attribute is ideal for surge handling, it creates a risk under continuous overloads where the part may continue to generate heat until igniting itself, the PCB, or surrounding components […]
Top power electronics threads on EDAboard.com – February
(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 thread.) Circuit to detect 240 or 380 V AC – I need to make a circuit that can […]
Rail-to-rail output, gate-drive photocouplers work from low input currents
Toshiba America Electronic Components, Inc. (TAEC)* today announced the launch of a series of low-input current drive, rail-to-rail output, gate drive photocouplers: the TLP5771, TLP5772 and TLP5774. A threshold input current of 2mA (max), which is half of Toshiba’s existing products[1], enables the new photocouplers to support bufferless direct drive of low- to medium-power IGBTs and […]