It pays to know when the use of a single fuse is less hazardous than fusing both hot and neutral wires. David Norton | TDK-Lambda Americas For many years ac-dc power supplies for the medical market have been safety certified to the IEC 60601-1 medical standard and to the industrial IEC 60950-1 /IEC 62368-1 standards. […]
Battery monitor IC helps reach ASIL-D compliance for automotive apps
Designers can now achieve ASIL-D compliance for automotive applications using just a single chip for a safer, more cost-effective battery management system with the MAX17853 battery monitor IC from Maxim Integrated Products, Inc. Targeting mid-to-large cell count configurations for automotive applications, such as battery packs for electric and hybrid vehicles, MAX17853’s unique flexible architecture called Flexpack […]
Common misconceptions about the MOSFET body diode
Engineers who design power circuits around wide-bandgap semiconductors frequently make costly mistakes that relate to the switching behavior of transistors. Julian Styles | GaN Systems We need to face an awkward and embarrassing truth about ourselves in the world of power electronics. I’d like to ask you to try to be completely open and honest […]
Highly efficient 150/200-W external PSUs handle industrial, IT and healthcare apps
XP Power has released two series of external power supplies that are intended for modern medical applications, including safety approvals for home-based healthcare, and IT applications where energy efficiency and international safety approvals are critical. Typical efficiencies for ALM150 models reach 93%, and 92% for the ALM200 models. All of the new PSUs meet Energy […]
How to electrocute yourself in a few easy steps
Here’s a fun project: Pop open an old microwave oven and scavenge the high-voltage transformer powering the cavity magnetron vacuum tube. Then use it to make yourself a Lichtenberg generator. But be sure there’s someone nearby to call an ambulance. Lichtenberg generators are used to create art and abstract objects by burning fractal patterns into […]
Miniature resettable thermal cutoff devices protect lithium-polymer/prismatic cells from over temperature and over current
Bourns, Inc. introduced the company’s smallest miniature resettable Thermal Cutoff (TCO) devices designed for overtemperature and overcurrent protection of lithium polymer and prismatic cells. The Bourns Model CB Series is the company’s next generation of axial leaded TCO devices that control abnormal, excessive current virtually instantaneously, up to rated limits. This latest series is more than 26 percent smaller […]
Error analysis in temperature sensing with NTC and silicon-based PTC thermistors: Comparing the Ratiometric and Absolute methods
by Hadi Ebrahimi-Darkhaneh, Texas Instruments A thermistor is a resistive device specifically designed to vary resistance with thermal change, and therefore follows Ohm’s law. According to Ohm’s law, a current passing through a resistive component will produce a voltage drop across that component. This voltage is proportional to the magnitude of the component resistance and […]
AC-DC U-channel 800-W power supplies for industrial and medical applications
Bel Power Solutions announced the ABC800 Series and MBC800 Series, which are U-channel power supplies ideal for industrial (ABC Series) and medical (MBC Series) applications and available in a variety of single output voltages. The ABC800 Series of U-channel power supplies feature a wide universal AC input range of 85 – 264 VAC, offering up […]
High-voltage switch IC delivers 3 A to 64 channels
STMicroelectronics’ 64-channel high-voltage analog-switch IC delivers integration for advanced ultrasound systems, probes, piezoelectric drivers, automated test equipment, industrial automation, and process control systems. The STHV64SW comprises a shift register for logic control signals, self-biased high-voltage MOSFET gate drivers, and N-channel MOSFET switches capable of providing up to ±3A peak output current. The switches respond quickly, with 1.5µs […]
Compact 650-W power supplies meet medical and industrial application specs
Murata announces the PQU650 series of open-frame, 650 W-rated AC-DC power supplies by Murata Power Solutions. The PQU650 series offers the highest power-density product on the market, with forced-air- and convection-cooled ambient ratings. The power supplies offer a multitude of standard features including wide output voltage adjustment range, auxiliary power rails, and a high transient […]
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