| 摘要 |
<p>PURPOSE:To prevent incapability of severance sensing resulting from uneven length of cables and prevent sensing of severance while the power is shut off. CONSTITUTION:The first terminal group 1 and second terminal group 2 have terminals 11-1m and ones 21-2m which are connected with external independent loads 51-5m, respectively, and thereto load currents I1, I2 equal substantially are supplied. The leads 31-3n of a current feed line 3 are connected with the first terminal group 1 and second terminal group 2, and therethrough the load currents I1, I2 flow. A current sensing circuit 4 senses the load current I1 in the first terminal group 1 and the load current I2 in the second terminal group 2, and a current sensing signal S1 according to the difference between the load currents (I11-I21) is emitted.</p> |
