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where is the last step? I dont really understand what to do?!
May 22, 2011. 9:27 PM060537
says:
Connect the big coil to your amplifier .And you need to put some tiny magnets together to approach the resonant frequencies.Then put the tiny magnets into your ear.make sure you can get it out by using another big magnet
May 20, 2011. 6:41 AMkondzio29
says:
i build it but the range is about 3 cm with good quality of sound
Why do I get the feeling you haven't actually done this (yet)
Magnetic transmission will not need the antenna!
How near the coil will I need to sit?
How will I match the impedance of the coil to the output of my hifi system?
So many questions - so little information.
PS Please folks DON'T push little magnets into your ear - connected to anything. Explaining it to the doctor when he tries to remove it is embarrassing.
Magnetic transmission will not need the antenna!
How near the coil will I need to sit?
How will I match the impedance of the coil to the output of my hifi system?
So many questions - so little information.
PS Please folks DON'T push little magnets into your ear - connected to anything. Explaining it to the doctor when he tries to remove it is embarrassing.
May 19, 2011. 7:40 PMFrank_GuYun (author)
says:
I just build a prototype for this sort of invisible headphones.The distance between your ear and the coil depends on the output power of you amplifier and the coil you build. This is a picture of the commercial version for cheating in examinations.
May 19, 2011. 7:44 PMFrank_GuYun (author)
says:
If you get this sort of commercial version, you should wear the coil on your chest.
May 18, 2011. 5:40 PMjakebaldwin
says:
Could you add more detailed instructions on how to make the ear piece? So far it makes some sense, but not quite enough for me to make one that works.
May 18, 2011. 10:41 PMFrank_GuYun (author)
says:
Thank you for viewing my work
the ear piece is made of tiny magnet which is usually used with Hall Sensor(http://www.jerry-howell.com/Hall-Magnets.html). You may need to put some tiny magnets together to approach the resonant frequencies.
the ear piece is made of tiny magnet which is usually used with Hall Sensor(http://www.jerry-howell.com/Hall-Magnets.html). You may need to put some tiny magnets together to approach the resonant frequencies.
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