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实用新型
CN207124451U 一种电源过压自恢复式霍尔编码器的保护电路 有权

一种电源过压自恢复式霍尔编码器的保护电路
摘要：
本实用新型公开了一种电源过压自恢复式霍尔编码器的保护电路，包括整流二极管D1、整流二极管D2、稳压二极管D3和pptc快恢复保险F1，所述整流二极管D1的正极接到电源的输入端，在电源的输入端接入电容C4并接地；所述整流二极管D1的负极接整流二极管D2的正极，整流二极管D2的负极接pptc快恢复保险F1的一端，pptc快恢复保险F1的另一端接到电阻R2、电阻R3、电阻R5和电阻R6的一个并联端口。本电源过压自恢复式霍尔编码器的保护电路，编码器供电电压采用12V设计，允许最大供电电压32V，保证编码器不被外部供电电压过高而损坏；连接一个100mA的pptc快恢复保险F1，限制电流流过，保护系统元件不被损坏；当外部电压恢复正常后，系统仍可正常工作。
摘要（英）：

The utility model discloses a protection circuit of power excessive pressure self -resuming formula hall encoder, resume insurance F1 soon including rectifier diode D1, rectifier diode D2, zener diodeD3 and pptc, the input of power is received to rectifier diode D1's positive pole, the input access electric capacity C4 and the ground connection of power, rectifier diode D1's negative pole connects rectifier diode D2's positive pole, and rectifier diode D2's negative pole connects pptc to resume insurance F1's one end soon, and resistance R2, resistance R3, resistance R5 and resistance R6's aparallelly connected port is received to the other end that pptc resumes insurance F1 soon. This protection circuit of power excessive pressure self -resuming formula hall encoder, encoder power supply voltage adopt the 12V design, allow the biggest power supply voltage 32V, guarantee that the encoder not too high and damage by outside power supply voltage, the pptc who connects a 100mA resumes insurance F1 soon, and limiting current flows through, and the protection system component is not damaged, after external voltage returned to normal, the system still can normally work.

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