Variable leakage transformer

Electricity: power supply or regulation systems – Remote sensing

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Details

336120, 336160, 363 91, H01F 2910, H01F 2912

Patent

active

042130840

ABSTRACT:
A variable leakage transformer or a variable voltage transformer comprising a magnetic core with a main magnetic path and a sub-magnetic path, the main magnetic path having at least a common magnetic path with the sub-magnetic path, a primary winding wound on said common magnetic path of the core, a secondary winding wound on said main magnetic path of the core, and means for controlling the magnetic flux in said sub-magnetic path. By controlling the magnetic flux in the sub-magnetic path, the leakage of the flux induced by the primary winding from the main magnetic path to the sub-magnetic path can be controlled, thus the coupling between the primary and secondary windings, and conduction period in each cycle of the AC output voltage are controlled. The control of the conduction period in each cycle provides the control of the power transmitted from the primary winding to the secondary winding.

REFERENCES:
patent: 1376978 (1921-05-01), Stoekle
patent: 2383460 (1945-08-01), Purves et al.
patent: 2975358 (1961-03-01), Ashman et al.
patent: 3087108 (1963-04-01), Toffolo et al.
patent: 3183429 (1965-05-01), Baycura et al.
patent: 3185917 (1965-05-01), Owen
patent: 3188552 (1965-06-01), Owen
patent: 3679966 (1972-07-01), Wanlass

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