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发明公开
CN104682371A 一种利用MOS管的大电流直流防反接电路 无效 - 撤回

一种利用MOS管的大电流直流防反接电路
摘要：
一种利用MOS管的大电流直流防反接电路，包括二极管D1、电阻R1、稳压管D2、MOS管Q1和MOS管Q2，其中：二极管D1阳极接系统外部电源，阴极接电阻R1的一端，电阻R1的另一端接稳压管D2的阴极、MOS管Q1的栅极和MOS管Q2的栅极，稳压管D2的阳极、MOS管Q1的漏极和MOS管Q2的漏极接地，MOS管Q1的源极和MOS管Q2的源极接系统接地端，本发明利用利用MOS管并联增加了正向导通电流的上限,提升了系统的可应用范围,使其可以使用在更大电流情况。
摘要（英）：

The invention discloses a large current direct current anti-reverse polarity circuit using MOS (metal oxide semiconductor) tubes, which comprises a diode D1, a resistor R1, a voltage-regulator tube D2, an MOS tube Q1 and an MOS tube Q2, wherein the anode of the diode D1 is connected with an external power supply of a system, and the cathode of the diode D1 is connected with one end of the resistor R1; the other end of the resistor R1 is connected with the cathode of the voltage-regulator tube D2, the grid of the MOS tube Q1 and the grid of the MOS tube Q2; the anode of the voltage-regulator tube D2, the drain of the MOS tube Q1 and the drain of the MOS tube Q2 are grounded; the source of the MOS tube Q1 and the source of the MOS tube Q2 are connected with the grounded end of the system. According to the large current direct current anti-reverse polarity circuit disclosed by the invention, the upper limit of positive breakover current is increased by connecting the MOS tubes in parallel, so that the application range of the system is broadened, and the system can be used under the condition that the current is larger.

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