发明名称 Overvoltage protection for input/output circuits
摘要 The invention relates to a method for protecting an I/O electronic circuit against overvoltages. The I/O circuit of the electronic circuit is provided with a current path (1) comprising a first diode (V1N), through which current path a current (ip) flows when the mains voltage is negative, and with a second current path (2) comprising a second diode (V1P) and a thyristor (T1), the thyristor (T1) being fired by a time-delay circuit charged by a positive voltage, and that the current flowing through the current paths (1,2) is used to trigger a protection device.
申请公布号 US5633773(A) 申请公布日期 1997.05.27
申请号 US19960699042 申请日期 1996.07.30
申请人 KONE OY 发明人 SUUR-ASKOLA, SEPPO
分类号 H02J1/00;H02H9/04;(IPC1-7):H02H9/04 主分类号 H02J1/00
代理机构 代理人
主权项
地址
您可能感兴趣的专利