A significant difference between the designs of these high-current shunts from known (for example, described in [6]) is the use in them instead of a thin-walled (with a thickness of not more than 0.3 mm) high-resistance
manganin disk from which the drop in the pulsed voltage from the passage of a measured current pulse is taken, a disk of thickness of 1 to 2 mm from stainless steel 12X18H10T [10, 11].
Cabalin and Laserna [26] used pulsed laser deposition to coat silicon with
manganin. They produced multielemental maps to monitor the coating constituents.
we chose
manganin shunt that resistance is 500[mu][OMEGA].
Manganin was developed about 1890 and is an alloy of copper, manganese, and nickel, nominally 84%, 12%, and 4%, respectively.
1) Standard resistor calibration: The 0.1 ohm standard resistor is a commercial, double-walled
manganin resistor (17) manufactured in 1913.
The structure of this shunt includes a
manganin measuring disk with a thickness [h.sub.s] [approximately equal to] 0.3 mm with an external diameter [D.sub.se] [approximately equal to] 80 mm, which determines the impulse resistance of the shunt, which is approximately [R.sub.S] [approximately equal to] 0.185 m[OHM] [+ or -] 1% [3, 7].
If worrying about the effect of barometric pressure changes on the lattice structure of your
Manganin or Evanohm standard resistors is keeping you awake nights, help is on the way.
Heat-treated
manganin wire resistors developed by Thomas incorporated hermetically-sealed, double-walled enclosures, with the resistance element in thermal contact with the inner wall of the container to improve heat dissipation.