K phillips

Claim 1

AN ELECTRICAL PULSE STRETCHING CIRCUIT COMPRISING A BISTABLE MAGNETIC ELEMENT AND A TRANSISTOR HAVING A BASE, AN EMITTER AND A COLLECTOR, MEANS FOR SETTING SAID MAGNETIC ELEMENT TO ITS FIRST STABLE STATE, A FIRST WINDING AND A SECOND WINDING ON SAID MAGNETIC ELEMENT, SAID SECOND WINDING BEING IN SERIES WITH SAID EMITTER AND SAID FIRST WINDING BEING REGENERATIVELY COUPLED TO SAID SECOND WINDING AND IN SERIES WITH SAID BASE, A SOURCE OF ELECTRICAL ENERGY IN SERIES WITH SAID SECOND WINDING AND SAID TRANSISTOR, MEANS FOR MAINTAINING SAID TRANSISTOR IN ITS CUT-OFF CONDITION SO AS TO PREVENT CURRENT FROM SAID SOURCE FROM TRAVERSING SAID SECOND WINDING, MEANS FOR APPLYING AN ELECTRICAL PULSE TO BE STRETCHED TO SAID TRANSISTOR SO AS TO TRIGGER IT INTO CONDUCTION WHEREBY SAID SECOND WINDING CARRIES CURRENT TO SWITCH THE BISTABLE MAGNETIC ELEMENT TOWARDS ITS SECOND STABLE STATE, WHEREBY DURING SUCH SWITCHING OF THE BISTABLE ELEMENT TOWARDS ITS SECOND STABLE STATE A VOLTAGE WILL BE INDUCED IN SAID FIRST WINDING WHICH IS FED BACK TO THE BASE OF SAID TRANSISTOR TO MAINTAIN IT IN ITS CONDUCTING STATE, AND AN INDUCTOR IN SERIES BETWEEN SAID FIRST WINDING AND SAID TRANSISTOR BASE FOR MAINTAINING SAID TRANSISTOR IN ITS CONDUCTING STATE AFTER SAID BISTABLE ELEMENT HAS COMPLETELY SWITCHED TO ITS SECOND STABLE STATE.