When faced with excessive conducted emissions from switching power supplies, one of the first things to investigate and to determine the adequacy of is the power line filter. Line-powered switching supplies generally have both common mode and differential mode sections of the filter as shown in the generalized schematic in Figure 1. When using a line impedance … [Read more...]
New Low-Cost Regulated SIP8 DC/DC Converters Launched
RECOM’s new regulated DC/DC converters RSE (2 Watt) and RSOE (1 Watt) series were developed for a variety of industrial, transport, test & measurement which require on-board 5V power supplies; the cost-effective converters operate at extreme temperatures from -40°C up to +80°C at full load. The fully upgraded DC/DC converters are offered with nominal 2:1 input voltages … [Read more...]
New High Current Shielded Power Inductors Introduced
Coilcraft's SER1400 Series High Current Shielded Power Inductors are designed for high current power supply applications, and AEC-Q200 Grade 1 (−40°C to +125°C) — SER1412 only. They come with flat wire windings for exceptionally low DCR, and have specially formed terminations to provide a small footprint. Versions for high Isat applications and high Irms applications are … [Read more...]
First Calibration System for SAR & OTA Testing
MVG's Golden Wireless Device is the first calibration system for SAR and OTA testing, a real innovation. SAR and OTA testing are currently done with a regular mobile phone. The Golden Wireless Device (GWD) is conceived for SAR and OTA users who are looking to validate their system. It is emulated with a COM Tester (base station simulator) on an available band, for real … [Read more...]
Stack Reference Designs Beat Next Generation DoE Power Density Targets
Mersen, a global expert in electrical power and advanced materials, has teamed-up with AgileSwitch and FTCAP to develop two high performance 3-phase SiC and IGBT power stack reference designs. The SiC reference demonstrator has been designed using Wolfspeed SiC modules with power density value of 16kW/L for SiC 150kVA heavy-duty Electric Vehicle (EV) inverter, exceeding US … [Read more...]
Energy Harvesting is Not Fiction Anymore
“About what we did dream today, are the ideas from tomorrow. The tomorrow ideas are the products from the days after tomorrow.” Our environment is changing and everything is becoming “electronified”. Our glasses, our hand gloves, shirts, shoes etc., can be connected already today with our smartphones and can send commands to the machinery surrounding us. We want this comfort, … [Read more...]
New Rack-Mounted Power Divider Matrix
MegaPhase now offers custom rack-mounted components for telecom testing. Pictured is a rack that includes twelve 6-way power dividers with quick-connect HPQN connectors from 678 to 2700 MHz. Each divider includes a monitor port for quick signal checks. The monitor port coupling values are typically -3.0/+2.0dB. These low loss dividers feature a minimum 17dB of isolation, phase … [Read more...]
Custom Capacitor Assemblies for High Power Requirements
Passive Plus, Inc. (PPI) offers Custom Capacitor Assemblies for high power requirements. Typical assemblies are configured in series and/or parallel combinations, producing higher voltage/current handling capabilities, extended capacitance range and tighter tolerances. PPI works with requesting engineers to determine best assembly for their applications. Typical Applications … [Read more...]
Narrowband Versus Broadband Harmonic Signals
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...]
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