The allowable value of continuous leakage current and patient measured current is slightly -F two-level valence current General equipment Class II equipment or mobile equipment or the current flowing to the earth) Ⅲ (caused by the addition of unexpected voltage to the signal input or output part) Ⅲ (caused by the addition of unexpected voltage to the contact part) DC and AC only refer to a single fault state related to ground leakage current, that is, the power line One is disconnected. Even if there is no applied potential at both ends of any resistor, there will be a certain alternating voltage, which is the thermal noise voltage generated by the irregular thermal motion of free electrons in the material, and its root mean square value is V,=, /4k7BR In the formula: h——Boltzmann constant, h=1.38 × 10-2J·K-1; T——thermodynamic temperature, K; B——bandwidth, Hz; R——resistance value Q. jofCGn(2.5) changes the law of the cross-sectional area of the skeleton with the displacement to obtain the output of different functions. Changing the cross-sectional area of the skeleton is usually achieved by changing the height of the skeleton.

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