Patent ID: 7030566

Claim:
A circuit arrangement for generating an AC voltage having the following features: a first and a second DC voltage input (J 1 , J 2 ), for connection to a DC voltage source, at least one AC voltage output (K 1 ), at least one load output (J 3 , J 4 ), for connection to a load, at least one electronic switch (T 1 , T 2 ) having two make contacts and a control contact, as a result of which a load resistor is defined between the make contacts, and a control resistor is defined between the control contact and a make contact, a make contact is coupled to a DC voltage input (J 1 , J 2 ), and the other make contact is coupled to the AC voltage output (K 1 ), a transformer having a primary (L 11 ) and at least one secondary winding (L 12 , L 13 ), a first terminal of the primary winding being coupled to the AC voltage output (K 1 ), and a second terminal of the primary winding being coupled to the load output (J 3 ), characterized in that the circuit arrangement has the following features: the secondary winding (L 12 , L 13 ) and the load resistor form a series circuit which is connected between a DC voltage input (J 1 , J 2 ) and the AC voltage output (K 1 ), the control contact is connected such that the control resistor and the secondary winding (L 12 , L 13 ) are in a mesh.