14-10-2012, 05:57 PM
metal detector circuit using bc547 transistors
14-10-2012, 05:57 PM
metal detector circuit using bc547 transistors
15-10-2012, 11:13 AM
to get information about the topic "METAL DETECTOR" full report ppt and related topic refer the link bellow
http://project-seminars.com/attachment.php?aid=31336 https://seminarproject.net/Thread-metal-...ull-report https://seminarproject.net/Thread-remote...ansmission https://seminarproject.net/Thread-metal-detector https://seminarproject.net/Thread-metal-...ort?page=3 https://seminarproject.net/Thread-metal-...ort?page=4-
09-07-2013, 02:27 PM
How the metal detectors work?
The operation of metal detectors is based on the principles of electromagnetic induction. It generates a rapidly changing magnetic field by running the alternating current though coil, which will generate eddy currents inside the metal objects. Thereby, the eddy currents will create a new magnetic field that affects the original one, and then the metal detectors will utter a high-pitched tone. The accuracy and reliability of the metal detectors depend on the stability of frequency of electromagnetic launchers. Generally, the frequency is between 80 to 800 KHz. The lower the frequency, the better detection for iron objects. Similarly, the higher the frequency, the better detection for high carbon steel objects. The sensitivity of the metal detectors decreases with the expanding detecting range. Moreover, the induction signal depends on the metal particle size and conductivity. Source: detectorall.com
09-07-2013, 02:28 PM
How the metal detectors work?
The operation of metal detectors is based on the principles of electromagnetic induction. It generates a rapidly changing magnetic field by running the alternating current though coil, which will generate eddy currents inside the metal objects. Thereby, the eddy currents will create a new magnetic field that affects the original one, and then the metal detectors will utter a high-pitched tone. The accuracy and reliability of the metal detectors depend on the stability of frequency of electromagnetic launchers. Generally, the frequency is between 80 to 800 KHz. The lower the frequency, the better detection for iron objects. Similarly, the higher the frequency, the better detection for high carbon steel objects. The sensitivity of the metal detectors decreases with the expanding detecting range. Moreover, the induction signal depends on the metal particle size and conductivity. Source: detectorall
11-07-2013, 10:07 AM
To get full information or details of METAL DETECTOR please have a look on the pages
https://seminarproject.net/Thread-metal-...ull-report https://seminarproject.net/Thread-metal-detector https://seminarproject.net/Thread-metal-detector-robot https://seminarproject.net/Thread-metal-detector-report if you again feel trouble on METAL DETECTOR please reply in that page and ask specific fields in METAL DETECTOR
16-07-2013, 03:14 PM
metal detectors can be seen everywhere in modern society that they are mainly applied in airports, stations, important conference rooms, supermarkets and many other public places where there are a large flow of people. They are used to detect the hidden metal objects on the people, such us guns and controlled knives, etc. The most common ones are walk through metal detectors and adjustable hand held metal detectors. Adjustable hand-held metal detectors are generally used together with walk through metal detectors. After the walk through metal detectors finding the metal objects and their approximate locations by making alarming, the adjustable hand-held metal detectors can be used to find the exact locations. Some people are worried about whether the metal detectors are harmful to pregnant ladies. We want to mention that they are harmless. There is no electronic equipment without radiation in this world. That is to say, all the electronic equipments are radioactive. But if you use them correctly, they won't do any harm to you.
source: www.detectorall.com |
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