Inverter transformer

Details Inverter transformer Inverter transformer

1975-11-03

1977-01-18

Beha, Jr., William H.

Oscillators

Solid state active element oscillator

Transistors

321 2, 321 12, 336 83, 336135, 336155, 336172, 336212, 336215, H03K 3281

Patent

active

040042510

ABSTRACT:
A transformer designed to operate with a pair of power switching transistors in a d.c. to a.c. inverter is described. The transformer has an assembled core whose closed magnetic path is branched. A flux steering winding is used to ensure the prior saturation of a first branch associated with a regenerative feedback winding. Prior saturation of this branch reduces the forward drive on the switching transistors prior to full core saturation and avoids the consequent switching stresses on the transistors. The cores of the transformer are made from parts which abut at the branches so that both preformed power and preformed control windings may be used in assembling the transformer. The transformer may be assembled from conventional core configurations, and is thus of relatively low cost. A core arrangement is also disclosed in which the cross-section of the individual branches of the core may be adjusted.

REFERENCES:
patent: 3237127 (1966-02-01), Corey
patent: 3253241 (1966-05-01), Tippett
patent: 3539905 (1970-11-01), Schwarz
patent: 3541428 (1970-11-01), Schwarz
patent: 3611330 (1971-10-01), Cacossa
patent: 3660751 (1972-05-01), Bullinga
patent: 3697855 (1972-10-01), Kernick et al.

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