Circuit for converting direct current to alternating current having a stable output frequency and voltage

Claim 1

A TRANSISTORIZED CONVERSION AND REGULATION CIRCUIT TO PRODUCE A REGULATED AC SIGNAL FROM A DC SOURCE COMPRISING CONSTANT REFERENCE VOLTAGE MEANS COUPLED TO SAID SOURCE TO SET THE SOURCE VOLTAGE SUPPLIED TO THE CONVERSION AND REGULATION CIRCUIT, AND SATURABLE VOLTAGE ABSORBING MEANS TO ABSORB DC VOLTAGE IN EXCESS OF A PREDETERMINED CONSTANT VALUE, SAID SATURABLE VOLTAGE ABSORBING MEANS INCLUDING AT LEAST TWO TRANSISTORS ACTING AS POWER TRANSISTORS, AND EXCITATION MEANS COUPLED TO SAID AT LEAST TWO TRANSISTORS IN OPPOSITE PHASE AND IN FEEDBACK RELATIONSHIP SO CONNECTED THAT WHEN DC POTENTIAL IS APPLIED TO THE CIRCUIT, ONE OF SAID AT LEAST TWO TRANSISTORS STARTS TO CONDUCT, BUILDING UP A POTENTIAL IN SAID EXCITATION MEANS UNTIL THE LIMIT OF THE CONDUCTING TRANSISTOR IS REACHED, AT WHICH POINT, THE POTENTIAL IN SAID EXCITATION MEANS IS OF OPPOSITE POLARITY OF THAT IN SAID CONDUCTING TRANSISTOR, EXCITING THE SECOND OF THE AT LEAST TWO TRANSISTORS TO CONDUCT IN OPPOSITE PHASE TO SAID ONE TRANSISTOR UNTIL THE LIMIT OF CONDUCTION OF SAID SECOND TRANSISTOR IS REACHED AND THE CYCLE IS REPEATED.