Boschert, Inc.

Arthur B Odell

William C Voight

An inverter (100) receives a DC voltage and generates therefrom a square wave output signal. The inverter includes an output transformer (T3) and a saturable core transformer (T4). The saturable core transformer (T4) provides base current for a first transistor (Q3) and a second transistor (Q4). The first transistor (Q3) and the second transistor (Q4) alternatively turn on and off, causing a square wave to appear across the secondary winding of the output transformer (T3). The primary winding of the output transformer is coupled to the collectors of the first and second transistors via a pair of windings (L10, L11) magnetically coupled to the saturable transformer (T4). A pair of diodes (D4, D5) are provided to prevent the output leads of primary windings of the output transformer (T3) from dropping below ground potential. In addition, a pair of saturable inductive elements (118, 120) or diodes (D8, D9 or D10, D11) are coupled between the primary windings of the output transformer (T3) and the collector windings (L10, L11) of the saturable transformer (T4) to prevent a drop in the voltage at the primary windings of the output transformer from altering the volt seconds appearing across the saturable core transformer (T4).

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Mountain View, CA, United States of America

Arthur B Odell