A NEW SYSTEM APPARATUS phonograph O TOCADISCOS

摘要

A new system phonograph device or turntable characterized essentially by the fact of the head of the pick-up a capsule coal electrically connected by way of a microphone with a capsule by a special low voltage circuit picks up vibrations of the needle as it passes through the grooves of gramophone record varying the resistance of said capsule coal according to varying pressure of the membrane or diaphragm.