Radiated and conducted emissions measurements are often comprised of both narrowband and broadband sources. So what differentiates “narrowband” and “broadband” signals? Narrowband Versus Broadband Signals The definition of whether a signal is narrowband or broadband as measured using a spectrum analyzer, depends entirely on the receiver bandwidth (resolution bandwidth, or … [Read more...]
Internal, External AC/DC Power Solutions Meet IEC 60601-1-2 Medical Standard
SL Power Electronics specialists highlight important medical trends and power solutions for next generation medical devices, helping take medical devices from concept to market. The MU425 family addresses the complex and unique power needs of surgical equipment, home healthcare therapeutic devices, and imaging equipment as well as other critical healthcare applications … [Read more...]
New Power Frequency Tester Capable of Long and Short Duration Testing
HAEFELY HIPOTRONICS is proud to announce the launch of the Power Frequency Tester, the MAG 1000. The MAG 1000 is a Power Frequency Tester capable of testing all of IEC 61000-4-8. An internal power supply allows the MAG 1000 to be used without any additional external power supplies. A MAG 1000 can help determine if a nearby magnetic field will influence the operational ability … [Read more...]
600V/650V Super Junction N-Channel Power MOSFETs with Improved EMI Performance
Storage & Electronic Devices Solutions Company today announced the launch of 600V/650V super junction N-channel power MOSFETs with improved EMI performance for use in industrial and office equipment. The new “DTMOS V series” will start with a line-up of twelve products. Sample shipments start today with mass production shipments scheduled for the middle of March. The new … [Read more...]
Review of IEC 60601-1-2: 2014 (4th Edition)
Introduction IEC 60601-1-2:2014 Edition 4 was published February 2014 and replaces IEC 60601-1-2 Edition 3 published on 2007. It pertains to EMC for medical electrical equipment and medical electrical systems. The European version (EN60601-1-2:2015) is identical to its IEC counterpart with exception of references to the EN versions of the 61000-4-x series and the addition of … [Read more...]
New Line of USB-Controlled Phase Locked Loop (PLL) Frequency Synthesizers
Pasternack, a leading provider of RF, microwave and millimeter wave products, has launched a new line of USB-controlled Phase Locked Loop (PLL) frequency synthesizers. In RF & Microwave communications systems where signal integrity is of prime importance, PLL synthesizers offer high levels of frequency stability and accuracy with exceptional phase noise characteristics … [Read more...]
New Probe Features Large Offset Range & DC Voltmeter for Power Integrity Measurements
Rohde & Schwarz introduces a probe with both a large offset range and a DC voltmeter for power integrity measurements. The R&S RT-ZPR20 is a new, extremely low-noise power rail probe with a bandwidth of 2 GHz. Its 1:1 attenuation also ensures very good sensitivity. The large offset range of ± 60 V permits analysis of the smallest disturbance signals during power … [Read more...]
Troubleshooting EFT
EFT Phenomenon Recently I tested a medical device for EFT susceptibility. The requirement is that the medical device must be immune to EFT bursts generated per IEC 61000-4-4. Per this standard EFT bursts are applied in four steps. For level 4, steps 1 and 2 are +/-2kV at 5kHz, and steps 3 and 4 are +/-2kV at 100kHz. For each step, these bursts are applied at 300ms interval for … [Read more...]
Low Loss Thin-Film Metal Inductors with High Current Capability for Power Supply Circuits
TDK Corporation presents the new TFM160808ALC thin-film inductor for power supply circuits, which features a maximum DC resistance of 62 milliohms that is 30 percent lower than for existing types (e.g. TFM160808ALM, 0.47 µH). The new type, whose compact dimensions are just 1.6 mm x 0.8 mm x 0.8 mm, also offers a high rated current of 2.6 A and an inductance of 0.47 µH. In … [Read more...]
New One-of-A-Kind Contact Current Meter (CCM)
The ICNIRP 1998 and 2010 guidelines for limiting exposure to time‐varying electric and magnetic fields (1HZ – 100 kHz) and specifically about their reference levels for time-varying contact currents from conductive objects brought to the EMF Directive 2013/35/EU, mandatorily in force from July, 1st 2016 in the EU. One of the parameters to be measured in accordance with this … [Read more...]
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