MS-352 PVG MALDES APPARATUS

Economical, Smooth and Accurate working
Melde’s Apparatus is used for demonstrating the effects of
vibrations in a stretched cord and investigate the relationship
between frequency, tension and density. In addition, the provision
of electrical contacts, opened and closed by the vibrating
armature, allow the apparatus to be used as high-speed
changeover switch in. Comprises a thin steel rod Oscillator
mounted in a clamp formed by a pair of 4mm socket terminals, so
that its free length may be adjusted as desired. An AC energising
coil surrounds the armature and a permanent magnet provides the
necessary magnetic polarization. The free end of the armature
equipped with a small boss headand a clamping screw for
attachment of the cord and also serves as the moving contact when
the apparatus is operating as a changeover switch. The complete
apparatus is mounted on a box type wooden base. Supplied
complete with 3 M Cord, Mass hanger 50 gm and two Slotted
masses of 50 gmch. and a power supply of 12 volt 2 Amp. A.C