The R&S ELEKTRA EMI test software has been designed for easy and intuitive EMI measurements during product development. It supports EMI test receivers and spectrum analyzers from Rohde & Schwarz. Even development engineers or technicians who only occasionally use these instruments to measure electromagnetic interference are able to configure automated test sequences … [Read more...]
The Importance of Layout in ESD Suppressing Diodes
ESD protection of sensitive electronics via transient voltage suppression (TVS) diodes is becoming a common circuit technique across industries. Signal lines in a circuit that are accessible to humans by touch (such as USB, HDMI, etc.) require ESD protection on all sensitive signal lines that are input to some IC’s. Placement of the ESD protection diodes on the circuit board … [Read more...]
Measuring Common Mode Versus Differential Mode Conducted Emissions
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...]
Near Field H-Loop Antenna for RF / EMI / EMC Diagnosis
We have been adding more and more specific antennas to our offering over the last few months, in order to help users get the best value from RF Explorer. As you probably know, the right antenna at the right place makes all the difference. Directional, omnidirectional, narrow band, wide band, patch, cloverleaf are available for different frequency ranges at SeeedStudio and … [Read more...]
Update to EMI Filter Selection Simulator Available
Murata Manufacturing Co., Ltd. is offering an update to their EMI filter selection software. The software simulates effects of Murata EMI Filters and Chip Capacitors based on specified conditions. Function This can be done easily by using the mouse on your Windows interface. The results of simulation are shown in the charts of "Voltage-waveform" and … [Read more...]
DC-DC Converter Uses Spread Spectrum Clock to Reduce EMI Noise
Ricoh Europe has launched a high-efficiency, 2A synchronous step-down DC/DC converter with a wide input voltage range up to 30V that has two options to minimise electromagnetic interference (EMI). The R1275 allows connecting to a variety of input sources, such as battery-powered portable devices, industrial supplies and automotive batteries. It uses a Spread Spectrum Clock … [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...]
New Online Transformer Tool Interacts with Design Suite
Wurth Elektronik is proud to announce the interaction of their Smart Transformer Selector (STS) with STMicroelectronics’ eDesignSuite. The STS is an online tool available to users for searching and selecting flyback transformers. “For the first time, there’s a design suite that can generate an entire BOM where all components can be purchased off the shelf, including the … [Read more...]
A2LA Recognized by FCC to Accredit Test Firms in Non-MRA Countries
The United States Federal Communications Commission (FCC) recently released DA-17-274A1 (released March 23, 2017). This release details the expansion of A2LA’s current FCC scope of recognition to include accreditation of testing laboratories located in non-MRA countries. This includes the People’s Republic of China, India, Philippines, and Thailand. As of July 13, 2017, … [Read more...]
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