Electronic switching device

Claim 1

AN ELECTRONIC RELAY COMPRISING: A FIRST PNP TRANSISTOR, A SECOND PNP TRANSISTOR, MEANS INTERCOUPLING SAID FIRST AND SAID SECOND PNP TRANSISTORS TO CAUSE THE STATE OF SAID SECOND PNP TRANSISTOR TO BE OPPOSITE FROM THE STATE OF SAID FIRST PNP TRANSISTOR, WHEREBY AN INPUT SIGNAL EFFECTIVE TO CHANGE THE STATE OF SAID FIRST PNP TRANSISTOR WILL ALSO CAUSE A CHANGE OF STATE OF SAID SECOND PNP TRANSISTOR AND WHEREBY WHEN SAID FIRST PNP TRANSISTOR IS ON, SAID SECOND PNP TRANSISTOR WILL BE OFF AND WHEN SAID FIRST PNP TRANSISTOR IS OFF, SAID SECOND PNP TRANSISTOR WILL BE ON, A FIRST NPN TRANSISTOR HAVING ITS BASE COUPLED TO THE COLLECTOR OUTPUT OF SAID FIRST PNP TRANSISTOR, SAID FIRST NPN TRANSISTOR BEING ADAPTED TO CHANGE ITS STATE IN RESPONSE TO A CHANGE OF STATE OF SAID FIRST PNP TRANSISTOR, AND A SECOND NPN TRANSISTOR HAVING ITS BASE COUPLED SOLELY TO THE COLLECTOR OUTPUT OF SAID SECOND PNP TRANSISTOR, SAID SECOND NPN TRANSISTOR BEING ADAPTED TO CHANGE ITS STATE IN RESPONSE TO A CHANGE OF STATE OF SAID SECOND PNP TRANSISTOR, WHEREBY THE COLLECTOR AND EMITTER TERMINALS OF EACH OF SAID NPN TRANSISTORS MAY BE USED AS ELECTRONIC RELAY TERMINALS WHOSE STATE IS A FUNCTION OF SAID INPUT SIGNAL.