LCR Electronics now offers two new series of EMI Filters for MRI shielded rooms. The 058 series filters are designed to mitigate any unwanted EMI noise through MRI room telephone, alarm and data lines. They are a collection of dual line filters rated 120/277 VAC 50/60 Hz up to 50 A at 60°C, 300/600 VDC line-to-ground and line-to-line, all with an impendence line-to- line rating … [Read more...]
New AC Capacitors Range from 2 to 75 µF
TDK-EPC’s new series of EPCOS MKP AC capacitors have a capacitance range from 2 to 75 µF and radial terminals for PCB mounting. The B3279* series of output filter capacitors features types for voltages up to 400 V AC and can be used in a wide range of output filter modules. Higher capacitance values can be realized by placing several capacitors in parallel in the PCB assembly, … [Read more...]
Operation Principle of LED Power Supply- Circuitry
This video details the benefits of using stabilized power supplies with pulse-width modulation to power LEDs, including obligatory circuit protection and electromagnetic suppression and the ability to smooth the incoming current filter. When choosing a power supply, full LED load for current consumption should be considered, i.e. the reserve power supply must be about one-third … [Read more...]
Companies Collaborate to Advance Earthquake Forecasting
QuakeFinder and the SETI Institute will collaborate to accelerate research toward a practical solution for short-term forecasting of major earthquakes based on electromagnetic precursory signals. This work builds upon the laboratory experiments of Institute researcher Dr. Friedemann Freund and on the field work of QuakeFinder collecting earthquake data and correlating it with … [Read more...]
Offering of Thermistors Sample Kits Expanded
TDK-EPC is presenting three new sample kits of ceramic PTC thermistors from EPCOS. The components of the sample kit “SMD PTC Thermistors for Limit Temperature Sensing/Superior Series” are designed for use as temperature sensors. The kit contains samples for sizes 0402, 0603 and 0805 across the temperature range between 75 and 145 °C in steps of 10 K. All thermistors are … [Read more...]
AC Power OEM Electrical SPD Prevents Damage to Sensitive Equipment
MCG Surge Protection’s recently introduced UL 1449 3rd Ed. UR Recognized 400 Series can be installed at or within a piece of equipment (metering systems, PLCs, monitoring systems, security controls, etc.), providing compact, heavy-duty surge suppression. Now with touch-safe terminal blocks, the 400 Series offers an elevated level of personnel protection. Employing a combination … [Read more...]
Ferrite Testing Reveals Significant Performance Variations
Recent empirical testing of FerriShield Ferrites shows that there is a notable increase in Ohms of impedance when compared to the exact same competitive alternative. Due to an industry‐wide shift in raw material formulation and manufacturing processes, many RFI/EMI ferrites on the market are delivering lower performance across a wide‐band frequency range. This variation is an … [Read more...]
IEC Releases EMC Filtering Devices Standard
CISPR 17:2011 specifies methods to measure the radio interference suppression characteristics of passive EMC filtering devices used in power and signal lines, and in other circuits. The defined methods may also be applied to combinations of over-voltage protection devices and EMC filtering devices. The measurement method covers the frequency range from 9 kHz to several GHz … [Read more...]
Chipset, Firmware Detect Hazardous Arc Faults in Photovoltaic Systems
National Semiconductor Corp. recently introduced the SolarMagic™ arc detection reference design, comprised of analog front end integrated circuits (ICs) and multi-band dynamic filtering firmware, the first commercially available chipset to detect hazardous DC arc faults in photovoltaic (PV) systems.In PV systems today, intermittent connections or insulation deterioration … [Read more...]
EMC Business Bulletin – June, 2011 – Volume 12
Check out these tips and pitfalls, and make your EMC marketing work smarter I like reading BtoB Magazine, especially Morrison's pieces on electronics engineers. In her latest article, she reminds us that EEs are information junkies. But getting the details of your latest filters or lightning test system into the heads of your prospects often leads marketers into a frenzy of … [Read more...]
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