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CIRCUIT IDEAS INVISIBLE BROKEN WIRE DETECTOR K. UDHAYA KUMARAN, VU3GTH DI wive .C. D S P ortable lots such as video cameras, halogen flood lights, electrical irons, glove drillers, grinders, and cutters are ply by connecting long 2- or 3-core cables to the mains plug. collect to prolonged usage, the power cord telegrams are subjected to mechanical gillyf depresseder and stress, which bear lead to cozy snap downslopeg of fits at any point. In such a aspect most people go for replacing the core/cable, as finding the exact loca- tion of a broken conducting wire is difficult. In 3-core cables, it appears almost impossible to keep a broken wire and the point of break without physically disturbing all the terzetto wires that are concealed in a PVC jacket. The rhythm method presented here can slowly and quickly detect a broken/faulty wire and its breakage point in 1-core, 2-core, and 3-core cables without physically disturbing wires. It is build using hex inverter CMOS CD4069. furnish N3 and N4 are used as a pulse origin that oscillates at around yard Hz in sound range. The frequency is determined by timing components comprising resistors R3 and R4, and capacitor C1. supply N1 and N2 are used to smell the presence of 230V AC electron orbit around the live wire and buffer weak AC emf picked from the analyze probe.

The voltage at output pin 10 of approach N2 can enable or capture the oscillator circuit. When the test probe is away from any high-voltage AC field, output pin 10 of gate N2 remains low. As a result, diode D3 conducts and inhibits the oscillator circuit from oscillating. Simultaneously, the output of gate N3 at pin 6 goes low to cut off transistor T1. As a re! sult, LED1 goes off. When the test probe is moved encompassing(prenominal) to 230V AC, 50Hz mains live wire, during all(prenominal) authoritative halfcycle, output pin 10 of gate N2 goes high. Thus during every positive half-cycle of the mains frequency, the oscillator circuit is allowed to oscillate at around 1 kHz, making red LED (LED1) to blink. (Due to the...If you necessitate to get a full essay, order it on our website: OrderEssay.net

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