2 inductance coils
Date: late 19th-early 20th Century
Inventory Number: 0366a,c
Classification: Induction Coil
Subject:
Maker: American ?
Cultural Region:
Dimensions:
0366a: 6.9 × 14.7 × 6.8 cm (2 11/16 × 5 13/16 × 2 11/16 in.)
0366c: 3.7 × 13.9 × 3.7 cm (1 7/16 × 5 1/2 × 1 7/16 in.)
Description:
Description from card:
366a - Coil of several layers of bell wire 53 turns per layer wound on hollow form with rectangular wooden ends with 2 binding posts on one of them.
366b - ditto to a, however, is broken beyond repair, moving from Perkins to Allston Burr to wire stock Dec. 1976.
366c - A smaller coil with smaller wire on wood form with hollow center and round ends - of a size to fit into above coils a & b.
366a - Coil of several layers of bell wire 53 turns per layer wound on hollow form with rectangular wooden ends with 2 binding posts on one of them.
366b - ditto to a, however, is broken beyond repair, moving from Perkins to Allston Burr to wire stock Dec. 1976.
366c - A smaller coil with smaller wire on wood form with hollow center and round ends - of a size to fit into above coils a & b.
Signedunsigned
FunctionFor experimentation and demonstration of the high voltages induced in a secondary winding when the current in the primary windings is abruptly disrupted. Coil c fits inside of coil a and one acts as the secondary winding of the other.
Curatorial RemarksPicture also shows b, which was destroyed moving from Perkins to Allston-Burr. Card also notes that the object was "Junked Dec '76".