electricalscho

A protection relay in which the tripping decision is dependent in part upon the direction in which the measured quantity is flowing.

Electric current in which electrons flow in one direction only. Opposite of alternating current.

A type of antenna commonly used in wireless networking devices. It has a signal range of 360 degrees horizontally and 75 degrees vertically.

With regard to outdoor lighting, the percentage of instantaneous voltage variation from normal that is required to extinguish a light source.

A microprocessor optimized in hardware design and software instruction set for the processing of analog signals digitally. This is achieved by DFT and similar techniques.