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反向串联
series-opposing
- 差功变压器的次级线圈接成反向串联，以便在平衡时输出为零。
The differential transformer secondary windings are connected in subtractive series so that the output is zero at balance. - 主电路采用反向串联的双向IGBT开关，用可编程逻辑元件实现四步切换，以保证安全换流。
To guarantee safe commutation, a four stepped switching strategy is realized by using programmable logic devices. - 串入一个二极管或两个反向并联的二极管可以作为一种有用的替代方法，起上述串联电阻的作用。
A series diode, or two diodes in parallel back-to-back, can serve as a useful alternative to a series resistor for this purpose.
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