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7 Sep INVISIBLE BROKEN WIRE DETECTOR PROJECT REPORT PRESENTED BY, RITESH PATIL APURVA NEMADE DARSHAN PATIL. 2 WHY WE NEED IT?? Today we use many gadgets and eletrical appliances which need a power connection from cellphones,refrigerators,cookers etc.. For all. 3 Aug Here is the circuit diagram and working of Continuity Tester, which is used to check broken wires, undesired shorting and discontinuity of wires.

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Electronics Engineering & Projects: #1 Invisible Broken-Wire Detector

Similarly, the low output of the pin 6 restrain the transistor from conducting. As a result diode D3 conducts and inhibits the oscillator cirircuit from oscillating. It will help us in detecting the electro-magnetic field.

Posted by Uttamraj Giri at While LED and buzzer are actually oscillating but they appears to be continuously on as the speed of blinking is very invisoble. To use this website, you must agree to our Privacy Policyincluding cookie policy. Portable loads such as video cameras, halogen flood lights, electrical irons, hand drillers, grinders, and cutters are powered by connecting long 2- or 3-core cables to the mains plug.

When there is no electro-magnetic field, then pin 4 of the IC remains high and if the electro-magnetic field is present near the detector circuit, then pin 4 becomes low and pin 12 becomes high which triggers the NPN transistor BC to light up the RED LED. K Praveen kumar October 23, at The frequency of this oscillator will be around 1 KHz and the output of this oscillator will drive the buzzer.

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We can use an inverter in between the led and the oscillator which will then turn on the LED only when the broken point is detected and keeping it off when wire is not broken.

How defector range it will cover.

Invisible Broken Wire Detector Circuit Diagram

Gates N3 and N4 are used as a pulse generator that oscillates at around Hz in audio range. When there will detdctor AC voltage present near it, then it will start beeping and LED will go high while when there will be no AC voltage or if there will be a broken wire, then the buzzer will remain quiet and the LED will go low.

Working of this Broken Wire Detector is very easy and the main part of this circuit, as mentioned preciously, is a hex inverter IC CD Unknown January 11, at Rohit Pravin October 18, at Due to prolonged usage, the power detecctor wires are subjected to mechanical strain and stress, which can lead to internal snapping of wires at any point.

When yhe test probe is away from high voltage ac field output pin 10 of gate N2 remains low. C, like electrical irons, grinders, air conditioners, flood lights, are powered by long 2 or 3 core cables connected to the AC mains. Registration Forgot your password?

Due to the utilization of these appliances for a long time with the flow of high current or because of mechanical strains, these wires may get broken from somewhere. We invisiible you have liked this presentation. At the same time, pin 6 will also go high and the output of pin 6 makes the diode in the reverse biased which will cause the RC oscillator created by the R7 and C2 detectog operate.


For all these we supply power using wires insulated inside a pvc covering covering, for protection of both wire and user,but sometimes this becomes a problem!! Anand Karna August 25, at 3: Thus during every positive half cycle of mains frequency N2 goees high,and oscillator circuit is allowed to oscillate at around kHz making LED 1 to blink.

This comment has been removed by the author. As a result, the buzzer will not beep and the LED will remain low. By making this change we can make our detector more user-friendly which now directly shows the broken point.

It would not only be able in reducing wastage of time but resources too. The main part of the project is IC Only working when it is bring to nearby a tube light I wanted to thank you for this great read!! Baba Charsi August 29, at 3: This will allow the detectorr to oscillate at around frequency of 1 KHz. K Praveen kumar October 22, at