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发明授权
CN1975446B 可控硅触发电流检测预警电路 失效 - 权利终止 转让

可控硅触发电流检测预警电路
摘要：
本发明涉及一种可控硅触发电流检测预警电路，该电路中的检测电路分为两路，一路由第一电阻与第一光耦连接，第一光耦输出端与第一电解电容正极连接，第一电解电容的负极接地，同时第一电解电容的正极连接第三电阻；另一路由第二电阻与第二光耦连接，第二光耦输出端与第二电解电容正极连接，第二电解电容的负极接地，同时第二电解电容的正极连接第四电阻；且第三电阻与第四电阻连接；工作启停电路由反相器输入端分别连接电阻、二极管及电解电容的正极，电解电容负极接地；反相器的输出端连接第三电阻、第四电阻，向第一光耦、第二光耦供电；隔离输出电路由或非门输出端连接二极管输出预警信号。该电路性能稳定可靠，抗干扰性强，应用范围广。
摘要（英）：

The invention relates to a warning circuit of the controlled silicon-spring current detection. The character is in that the circuit is made up of the detecting circuit, the working start/stop circuitand the separated output circuit. The detection circuit is divided into two ways which includes the resistance R1,R2,R3,R4, the electrolysis condenser E1,E2, the optical coupling U1,U2; one is composed by connecting the R1,R3,E1,U1, the other is connected by R2,R4,E2,U2; The working start/stop circuit is connected by the resistance R0, the electrolysis condenser E0, diode D0 and the inverterU1D. The separated output circuit is connected by the U1A and the diode D1; the output of the optical coupling U1, U2 are connected to the input of the U1A; the output of the inverter U1D is connected to the resistance R3 and R4 to supply the power for the U1, U2. The invention is simple and good designation. Also it costs low and it can be used widely.

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