公开(公告)号：WO1996031003A1

公开(公告)日：1996-10-03

申请号：PCT/IB1996000249

申请日：1996-03-21

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  KHUDOSHIN, Alexander

IPC: H03K17/13

CPC classification number: H03K17/725 ,  H02M1/083 ,  H03K17/136

Abstract: Triac control circuit with means (6) for sensing the gate voltage of a triac (2) and a gate pulse generator (11) responsive to the means for sensing. The gate voltage depends on the current through the triac and changes from a higher voltage value for a large triac current to a lower voltage value for a triac current closer to the triac holding current. By sensing the gate voltage it is possible to anticipate the triac turnoff and to generate a triac gate pulse before the triac turns off.

Abstract translation: 具有用于感测三端双向可控硅开关（2）和门脉冲发生器（11）的栅极电压的装置（6）的三端双向可控硅开关元件控制电路，用于响应于用于感测的装置。 栅极电压取决于通过三端双向可控硅开关元件的电流，并且从较大的三端双向可控硅开关电流的较高电压值改变为更接近三端双向晶闸管保持电流的三端双向可控硅开关电流的较低电压值。 通过检测栅极电压，可以预测三端双向可控硅开关电路，并在三端双向可控硅开关断开之前产生三端双向可控硅开关栅极脉冲。