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②开关变压器T121的⑦～⑩绕组感应的脉冲电压经D602整流、C604滤波后,得到约9.3V的直流电压Vs(即S点电压)送到Z602的②脚,如图6所示。
(2) The pulse voltage induced by the windings ⑦ ~ ⑩ of the switching transformer T121 is rectified by D602, and filtered by C604 to obtain a DC voltage Vs of about 9.3V (that is, the voltage at point S) is sent to pin 2 of Z602, as shown in FIG.