INVISIBLE BROKEN WIRE DETECTOR

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1. INTRODUCTION
In our day to day life we are dealing with electricity as well as so many electrical
equipments. In this electrical equipment the household appliances play a major role.
So the fault occurring with them is also a major problem. Generally the fault seen is
the breaking of wire inside the two layer or three layer cables or the short circuit
between them. Portable loads such as video cameras, halogen flood lights, electrical
irons, hand drill, grinders, and cutters are powered by connecting long 2- or 3-core
cables to the mains plug. Due to prolonged usage, the power cord wires are
subjected to mechanical strain and stress, which can lead to internal snapping or
short circuiting of wires at any point. In such a case most people go for replacing
the core/cable, as finding the exact location of a fault of the wire is difficult. In 3-
core cables, it appears almost impossible to detect a fault portion of the wire and the
point of break or short circuit without physically disturbing all the three Wires that
are concealed in a PVC jacket.
Invisible Broken Wire Detector:
The circuit presented here can easily and quickly detect a faulty wire and its point
of open circuit or short circuit in 1-core, 2-core, and 3-core cables without
physically disturbing the wires. The circuit present here can work in the two modes
of operation. One is the mode of invisible broken wire detector and the second as a
short checker. The invisible broken wire detector exactly find the location of the
fault due to the breakage of wire inside the cables while the second circuit will find
whether the fault is a short circuit fault which is happening due to the burning of
insulation inside the cables. Hence this circuit offers a simple and better way of
finding the faults in the household appliances.