Please wait...

Description

This contact microphone is based on an spiral made of iron and a coil. The spiral is sensible to all kinds of vibrations. The coil is connected to a dc voltage source via low noise resistor. Thus the iron spiral is magnetized. Changes of the spiral's shape change the magnetism of the iron and generate electric signals in the coil.

Videos

Similar inventions
Popular Categories

Agriculture Architecture Astrophysics Automotive Baby Beauty Biology Biotech Chemistry Clothing & Accessories Computers Construction Consumer Products Dental Design Electrical Engineering Electronics Energy Engineering Entertainment Food & Beverage Games Gardening Green Energy Healthcare Home Improvement Internet & Media Kitchen Gadgets Life Sciences Manufacturing Material Science Mechanical Engineering Medicine Miscellaneous Music Nanotechnology Office Optical Science Outdoor Personal Care Pets Physics Software Solar Sports Equipment Telecommunications Tools Toys Transportation