Referring the impedance is done simply by multiplying initial secondary impedance value by the current ratio.
2.
In addition, because the windings are relatively short a toroidal transformer will have a lower secondary impedance which will increase efficiency and electrical performance.
3.
In some cases, the secondary impedance is " referred " to the primary side, and is found as Z S = N 2 Z P.
4.
For the 4000 : 5 CT, the secondary impedance can be found as Z S = NZ P = 800Z P, and the secondary voltage can be found as V S = NV P = 800V P.
5.
It is cooled by the still ( described below ) to a temperature 500 700 mK . Subsequently the 3 He flows through a secondary impedance and one side of a set of counterflow heat exchangers where it is cooled by a cold flow of 3 He.
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