Columns

The Banana Skin columns were compiled by Keith Armstrong, of Cherry Clough Consultants Ltd.

This article discusses the creation of a common-mode current in a typical circuit and explains the effectiveness of a common-mode choke on differential-mode and common-mode currents.

When measuring signals in electronic circuits some times what you see on the screen is not what you have in the circuit. Parasitic couplings, mismatching, noise pickup, and many other anomalous effects can give you the wrong picture of your problem.

When electrostatic control is properly considered and implemented, there is no need to worry about electrostatic hazards in healthcare.

The regular “Banana Skins” column was published in the EMC Journal, starting in January 1998.

This article reviews the decibel units used in EMC laboratory measurements and testing. We begin by defining a decibel (dB) unit and proceed to the EMC specific units for voltage, current, power, and impedance measurements.

When designing EMI filters how and where the filter is installed is critical to obtain the desired insertion losses. Usually, the effect of a wrong location or installation is not considered in the design of the filter and surprises appear.

When garments are specified as part of an ESD control program, they must be qualified and verified by testing.

This month we look at what “supplementary symbols” are – and how and when to use them on the safety labels on your products.

We are proud to carry on the tradition of sharing Banana Skins for the purpose of promoting education for EMI/EMC engineers.