ELECTROMAGNET SOUND RECEIVER WITH CONTROLLED MAGNET FLOW Russian patent published in 2009 - IPC G10H3/18 

FIELD: electric engineering.

SUBSTANCE: invention is related to the field of electronics and may be used in design of electric musical instruments, which convert mechanical energy of strings oscillations into electric signals, for instance electric guitars, electric violins, electric pianos, etc. Electromagnet sound receiver with controlled magnet flow, comprising two flat pole cores, which are attached perpendicularly to opposite poles of permanent magnet, on which signal coils are installed, which generate AC voltage of sound frequency. At the same time magnetising coils are introduced in it, which are connected serially to electric source of magnetisation, moreover, coils are located in compliance with the following pattern: magnetising coil inside, signal coil outside, or the following pattern: one above another along vertical axis of pole core.

EFFECT: possibility to control magnet flow, higher validity of useful sound signal transfer in wide range of frequencies, higher noise immunity and stability of working characteristics.

1 dwg