Pulse generator

Claim 1

A PULSE GENERATOR COMPRISING AT LEAST ONE ACTIVE ELEMENT OPERATIVE IN AT LEAST TWO STATES, A FIRST STATE WHEREIN IT PRESENTS A HIGH IMPEDANCE BETWEEN TWO TERMINALS AND A SECOND STATE WHERE IT PRESENTS A LOW IMPEDANCE BETWEEN THE SAME TWO TERMINALS, MEANS FOR CONDITIONING SAID ACTIVE ELEMENT TO NORMALLY ASSUME SAID FIRST OR SAID SECOND STATE, MEANS RESPONSIVE TO INPUT SIGNALS OF ONE POLARITY FOR SWITCHING SAID ELEMENT FROM THE FIRST TO THE SECOND STATE FOR A PREDETERMINED TIME WHEN THE ELEMENT IS CONDITIONED NORMALLY TO SAID FIRST STATE AND FOR SWITCHING SAID ACTIVE ELEMENT FROM SAID SECOND STATE TO THE FIRST STATE WHEN THE ELEMENT IS CONDITIONED NORMALLY TO SAID SECOND STATE, OUTPUT MEANS, MEANS CONNECTED TO SAID OUTPUT MEANS AND SAID ACTIVE ELEMENT FOR SUPPLYING CURRENT THERETO WHEN THE ACTIVE ELEMENT FOR SUPPLYING CURRENT IN ITS SECOND STATE, A CURRENT SOURCE, A VOLTAGE SOURCE, SWITCHING MEANS CONNECTED TO SAID OUTPUT MEANS AND SAID ACTIVE ELEMENT AND HAVING A FIRST CONDITION FOR COUPLING SAID CURRENT SOURCE TO SAID ACTIVE ELEMENT AND FOR BIASING SAID ACTIVE ELEMENT TO NORMALLY ASSUME ITS SECOND STATE, SAID ACTIVE ELEMENT SERVING TO NORMALLY DIRECT CURRENT AWAY FROM SAID OUTPUT MEANS AND TO PASS CURRENT TO SAID OUTPUT MEANS WHEN IT IS SWITCHED TO ITS FIRST STATE BY SAID INPUT SIGNALS, SAID SWITCHING MEANS HAVING A SECOND CONDITION FOR COUPLING SAID VOLTAGE SOURCE TO SAID ACTIVE ELEMENT AND DECOUPLING SAID CURRENT SOURCE AND FOR BIASING SAID ACTIVE ELEMENT TO NORMALLY ASSUME ITS FIRST STATE AND TO SUPPLY VOLTAGE TO SAID OUTPUT MEANS WHEN IT IS SWITCHED TO ITS SECOND STATE.