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| Resistor bank |
"Grid" resistor
elements are cut from stainless steel sheets of various thicknesses.
Different ohmic values are introduced into the elements by cutting an
appropriate number of slots using a technical procedure wich ensures a constant
radiating surface and constant stiffness of the grid elements.
After
cutting, the grids are held in position by two folded metal strips insulated
with mica and fastened to the elements using as many fastenings as there are
cuts in the elements.
All the above operations are carried out totally
automatically on a numerically controlled machine. Resistor banks are then
assembled using grids which are fully insulated from supporting tie-rods by
ceramic insulators. The assembly is robust and resistant to shocks and
vibration. Connections to the elements can be bolted or spot welded. Both
arrangements allow every grid to be a tapping point.
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