EDN

Common-Mode Noise: Sources and Solutions

Circuit designers often encounter the adverse effects of common-mode noise on a design. Once a common-mode problem is identified, there are several ways that it can be resolved. Circuit designers ...
Electrical Construction & Maintenance

What to Know About Common Mode Surges and Ground Contamination

According to IEEE/ANSI Standard C62.41-1991 (formerly IEEE Standard 587), Recommended Practice on Surge Voltages in Low-Voltage AC Power Circuits, the worst normal mode surge expected inside a ...
EDN

Common-mode rejection

Depending on the application for the ECG subsystem, there are clinical situations where the CMR (common-mode rejection) must be very high. The AAMI (Association for the Advancement of Medical ...
Electronic Design

Common-Mode Filter for Automotive Ethernet Claims Lowest Parasitic Capacitance

The newest member of TDK’s lineup of common-mode filters for 10BASE-T1S automotive Ethernet systems, designated ACT1210E-131-2P-TL00, lowers the line-to-line capacitance by approximately 30% based on ...
Hackaday

Current Mirrors Tame Common Mode Noise

If you’re the sort who finds beauty in symmetry – and I’m not talking about your latest PCB layout – then you’ll appreciate this clever take on the long-tailed pair. [Kevin]’s video on this topic ...
Electronic Design

About Common-Mode Rejection

Common-mode rejection is the ability of the differential amplifier (which sits between the oscilloscope and probes as a signal-conditioning preamp) to eliminate the common-mode voltage from the output ...