| Definition: | functional unit that generates the value of its output variable by squaring the value of its input variable and multiplying the square by a constant weighting factor according to the formula 
where
| t | is the time; |
| u(t) | is the input variable; |
| K | is the weighting factor; |
| v(t) | is the output variable. |
Note 1 to entry: This entry was numbered 351-32-21 in IEC 60050-351:2006.
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