Piano string tuning using inductive current pumps and associated method of use

摘要

A present disclosure relates to a method and apparatus for tuning piano strings by heating the piano strings. The apparatus includes split magnetic cores that encircle the piano strings. The magnetic cores comprise wiring wrapped around the outside of the magnetic cores to induce an alternating current in the piano strings through mutual inductance. The generated alternating current in the piano strings allows each piano string to be heated and thereby tuned.

主权项

1. An apparatus for automatic tuning of a piano string comprising:
a core having at least one first side member and at least one second side member, wherein the at least one first side member and at least one second side member are separated by a piano string when positioned or the automatic tuning; a wire winding wound around the two side members of the core, wherein the wire winding includes a first terminal, a second terminal, and a third terminal of the wire winding located between the first terminal and the second terminal and connected to a positive terminal of a DC power supply; and an electrical switching mechanism configured to alternatingly electrically connect either the first terminal or the second terminal to ground to thereby induce an alternating magnetic flux in the core, thereby inducing an alternating electrical current in the piano string for the purpose of changing temperature and pitch of the piano string.