通过星三角等效变换及电阻串并联等效变换公式,推导得出了电桥电路的一组等效电阻公式,相较于其他相关等效电阻公式,减少了电阻参数的反复利用次数,相对具备了方便理解和记忆的特征,并可由这些公式进一步推导出一些与电桥电路相关的普适规律。%Through the formulas for the star delta equiva-lent transformation and resistor series-parallel equivalent transformation,a set of equivalent resistance formula for the bridge circuit is deduced. Compared to other related formu-las,it has reduced the number of repeated use of the resis-tance parameters and obtained the characteristics of being easy to understand and memorize. In addition,some univer-sal laws associated with the bridge circuit could be further derived from these formulas.
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