Patent ID: 8823387
Filing Date: 2014-09-02
Classification: H01H,H02H

Abstract:
1. A detector for monitoring voltage drop across a fuse for blown-fuse detection, the fuse having first and second fuse terminals and protecting a circuit having first and second conductor portions, the fuse being electrically connected in series with the first and second conductor portions, said blown-fuse detector comprising: first and second electrical connection structures for electrically connecting the first and second conductor portions to the first and second fuse terminals, respectively; a voltage differential detector having first and second differential inputs and which is operable to generate a detector output when the voltage across said differential inputs exceeds a predetermined threshold voltage; first and second capacitors capacitively coupling said first and second electrical connection structures to said first and second differential inputs, respectively, said capacitors serving as capacitively-coupled voltage sensors; said first and second capacitors being included within respective first and second electrical insulator structures mechanically supporting said first and second electrical connection structures; and said first and second electrical insulator structures being supported on a base through which electrical connections to said voltage differential detector circuit pass.