When switching a voltage source to multiple devices, it may become necessary to compensate for voltage drops due to switch resistance.

在将一个电压源切换至多个装置时，则可能必须补偿由于开关电阻引起的压降。

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In parallel with the ideal switch is the contact leakage resistance and capacitance.

与理想开关相并联的是触点漏泄电阻和电容。

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In the main circuit, the inverse parallel couple SCRs (silicon-controlled rectifier) are used as a electric switch, switching the transformer of resistance spot welding.

主电路以反并联的晶闸管作为控制开关，控制焊接用的电阻点焊变压器通电与否。

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Going forward, this trendline could switch roles to act as resistance.

FORBES: by Elizabeth Harrow

For example, Zeneca has managed to switch the bt gene, which gives maize plants resistance to nasty insects, on and off using another chemical trigger.

ECONOMIST: Terminator genes