Common mode

Common mode is a term in engineering with at least two independent meanings.

Of electrical signals,

Common-mode rejection ratio, the ratio of rejection of common mode signals to differential signals
Common-mode interference, interference that appears on both signal leads, or coherent interference that affects two or more elements of a network
Common-mode signal, a component of an analog signal with the same sign on two signal leads

Common mode failure is when one event causes multiple systems to fail

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common-mode — F/A/V refers to either noise or surge voltage disturbances occurring between the power neutral (white wire) and the grounding conductor (green wire). Unwanted common mode disturbances exist as a result of noise injection into the neutral or… … Audio and video glossary
Common-mode signal — is the component of an analog signal which is present with one sign on all considered conclusions. In electronics where the signal is transferred with differential voltage use, the common mode signal is called a half sum of voltages: When… … Wikipedia
Common Mode Failure — (CMF; deutsch Gleichartige Ausfälle[1]) ist ein Begriff aus der EN ISO 12100 1:2003 und bezeichnet in der Risikoanalyse das Versagen von mehreren Komponenten oder Systemen, deren Versagen einem einheitlichen Ablauf folgt. Gelegentlich findet … Deutsch Wikipedia
common-mode failure — noun (nuclear eng) The failure of two or more supposedly independent parts of a system (eg a reactor) from a common external cause or from interaction between the parts • • • Main Entry: ↑common … Useful english dictionary
Common-mode rejection ratio — The common mode rejection ratio (CMRR) of a differential amplifier (or other device) is the tendency of the devices to reject the input signals common to both input leads. A high CMRR is important in applications where the signal of interest is… … Wikipedia
Common-mode interference — In telecommunication, the term common mode interference has the following meanings: Interference that appears on both signal leads (signal and circuit return), or the terminals of a measuring circuit, and ground. A form of coherent interference… … Wikipedia
Common-Mode Rejection — Die Gleichtaktunterdrückung (engl. Common Mode Rejection Ratio, kurz CMRR) gibt in der Elektronik an, wie wenig sich die Ausgangsspannungs ändert, wenn sich die beiden Eingangsspannungen eines elektrischen Differenzverstärkers um den gleichen… … Deutsch Wikipedia
Common-Mode Rejection Ratio — Die Gleichtaktunterdrückung (engl. Common Mode Rejection Ratio, kurz CMRR) gibt in der Elektronik an, wie wenig sich die Ausgangsspannungs ändert, wenn sich die beiden Eingangsspannungen eines elektrischen Differenzverstärkers um den gleichen… … Deutsch Wikipedia
Common mode failure — A common mode failure occurs when events are not statistically independent. That is, one event causes multiple systems to fail.An example is when all of the pumps for a fire sprinkler system are located in one room. If the room becomes too hot… … Wikipedia
Common mode rejection ratio — A&V • For a differential amplifier, the ratio of differential gain to common mode gain. • Expressed in dB, the ratio of common mode input voltage to output voltage. • For an operational amplifier, the ratio of the change in input/offset voltage… … Audio and video glossary

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Common mode

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