Low distortion high sensitivity seismometer

摘要: A compact, high sensitivity low distortion seismometer having an elongated tubular outer pole formed of a magnetic material, assembly located in the interior and permanent magnet pair conductive pieces electrically magnetically coupled to magnet, coil mass positioned for vertical rotational movement relative which includes form, preformed springs one is fixedly attached each end coils center thereof axially aligned with axis form at commutating rings, electrical physical contact adjacent spring, insulators, support insulate spring ring thereto from O-rings, adapted clamp insulator into integral sub-assembly top bottom include slideable wiping contacts are slideably connected forming path through rotating shown.