TACTILE OSCILLATOR Russian patent published in 1999 - IPC

FIELD: electrical engineering, in particular, hearing aid equipment. SUBSTANCE: device has cylindrical housing, which is covered with cap. Lower end of housing serves as contact plate. Magnetic system of oscillator has ring magnet, ring core and cylindrical hollow magnetic circuit which are mounted on non-magnetic sleeve. Sleeve is mounted on central rod of housing by means of flexible members. Non- magnetic holder which is mounted on cap carries coil, which is located in operation ring-shaped gap provided by outer surface of core and inner surface of magnetic circuit. EFFECT: stable output level in given band, decreased size, sealed design of housing. 2 cl, 3 dwg