Rheostat single products in the circuit can be used for series and parallel use can also be multiple, and machine use.
变阻器单台产品在电路中可作串、并联使用，也可多台并机使用。
With the basic laws of circuit theories, it analyzes ideal voltage source's parallel connection and ideal current source's series connection.
应用电路理论的基本定律分析理想电压源的并联和理想电流源的串联。
The RC loop parallel with the card formed an electric circuit on the series relay coil to excite the coil and make the contact maloperate.
为此，提出了在继电器两端并联一个电阻器或者电容器的改进方案，使其起到降低输出继电器两端激励电压的作用。
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