Instruction Sheet - 3B SCIENTIFIC PHYSICS U185051 Instrucciones De Uso

3B SCIENTIFIC

Instruction sheet

03/08 ALF
1. Description
The Helmholtz coils are used to create magnetic
fields for deflecting electron beams and are at-
tached to the tube holder U185001. The tube holder
allows the coils to be set up in Helmholtz configura-
tion or at varying distances. The resulting magnetic
fields are highly uniform and can be aligned per-
pendicular to the axis of the tube or in co-axial
alignment.
The two air-filled coils are made of lacquered cop-
per wire on a plastic bobbin with connectors at both
ends of the winding labelled (A) and (Z).
®
PHYSICS
Helmholtz Pair of Coils S U185051
2. Technical data
Number of winding
turns:
Coil diameter:
Max. current:
continuous:
momentary:
Effective impedance:
Connectors:
Magnetic flux B in
Helmholtz-configuration:
1
1 Coils
2 4-mm safety socket
3 Coil base
320 each
136 mm approx.
1.0 A
1.5 A (max. 10 min)
2.0 A (max. 3 min)
6 Ω approx.
4-mm safety socket
B = k * I, where
k = appr. 4,2 mT/A