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静电成为电脑芯片的无形杀手,早已被人们所认识。因此,探测电脑周围静电的有无,保障电脑安全运行已显得十分必要。所以,笔者设计并制作了能探测到静电的存在,并将探测到的静电泄放掉的设备。电路如图所示,R1和VT1构成VT2的基极偏置,R2为VD1的限流电阻。电路工作原理是:接通电源后,如果感应片A的周围没有静电,则VT1的漏源两极之
Electrostatic becomes an invisible killer of computer chips, has long been recognized by people. Therefore, the detection of static electricity around the computer, to ensure the safe operation of the computer has become very necessary. Therefore, I designed and produced a device that detects the presence of static electricity and discharges the detected static electricity. Circuit as shown, R1 and VT1 constitute the base bias VT2, R2 for the VD1 current limiting resistor. The working principle of the circuit is: After the power is turned on, if there is no static electricity around the sensing chip A, the drain source of VT1