Photoelectric control device responsive to two light sources
First Claim
1. A PHOTOELECTRIC CONTROLLER COMPRISING A PHOTOSENSITIVE DEVICE INCLUDING AN ELECTRON FLOW CONTROL ELEMENT HAVING AN OUTPUT TERMINAL AND ALSO INCLUDING MEANS SEPARATE FROM SAID ELECTRON FLOW CONTROL ELEMENT AND RESPONSIVE TO ILLUMINATION FROM A FIRST LIGHT SOURCE FOR CONTROLLING SAID ELECTRON FLOW CONTROL ELEMENT TO PRODUCE A FIRST OUTPUT SIGNAL AT SAID OUTPUT TERMINAL WHEN SAID ILLUMINATION EXCEEDS A PREDETERMINED VALUE AND TO PRODUCE A SECOND OUTPUT SIGNAL WHEN SAID ILLUMINATION IS LESS THAN SAID PREDETERMINED VALUE, AND A PHOTOSENSITIVE SWITCH CIRCUIT HAVING AN INPUT TERMINAL CONNECTED TO SAID OUTPUT TERMINAL OF SAID ELECTRON FLOW CONTROL ELEMENT WHICH SWITCH CIRCUIT INCLUDES A SECOND OUTPUT TERMINAL, A SECOND ELECTRON FLOW CONTROL DEVICE AND MEANS RESPONSIVE TO ILLUMINATION FROM A SECOND LIGHT SOURCE AND ALSO TO SAID OUTPUT SIGNALS APPEARING AT SAID FIRST MENTIONED OUTPUT TERMINAL FOR CONTROLLING SAID SECOND ELECTRON FLOW CONTROL ELEMENT TO PRODUCE A GIVEN OUTPUT SIGNAL AT SAID SECOND OUTPUT TERMINAL ONLY WHEN SAID SECOND OUTPUT IS PRESENT AND WHEN AT THE SAME TIME SAID ILLUMINATION FROM SAID SECOND LIGHT SOURCE EXCEEDS A PREDETERMINED VALUE.
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1 Claim
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1. A PHOTOELECTRIC CONTROLLER COMPRISING A PHOTOSENSITIVE DEVICE INCLUDING AN ELECTRON FLOW CONTROL ELEMENT HAVING AN OUTPUT TERMINAL AND ALSO INCLUDING MEANS SEPARATE FROM SAID ELECTRON FLOW CONTROL ELEMENT AND RESPONSIVE TO ILLUMINATION FROM A FIRST LIGHT SOURCE FOR CONTROLLING SAID ELECTRON FLOW CONTROL ELEMENT TO PRODUCE A FIRST OUTPUT SIGNAL AT SAID OUTPUT TERMINAL WHEN SAID ILLUMINATION EXCEEDS A PREDETERMINED VALUE AND TO PRODUCE A SECOND OUTPUT SIGNAL WHEN SAID ILLUMINATION IS LESS THAN SAID PREDETERMINED VALUE, AND A PHOTOSENSITIVE SWITCH CIRCUIT HAVING AN INPUT TERMINAL CONNECTED TO SAID OUTPUT TERMINAL OF SAID ELECTRON FLOW CONTROL ELEMENT WHICH SWITCH CIRCUIT INCLUDES A SECOND OUTPUT TERMINAL, A SECOND ELECTRON FLOW CONTROL DEVICE AND MEANS RESPONSIVE TO ILLUMINATION FROM A SECOND LIGHT SOURCE AND ALSO TO SAID OUTPUT SIGNALS APPEARING AT SAID FIRST MENTIONED OUTPUT TERMINAL FOR CONTROLLING SAID SECOND ELECTRON FLOW CONTROL ELEMENT TO PRODUCE A GIVEN OUTPUT SIGNAL AT SAID SECOND OUTPUT TERMINAL ONLY WHEN SAID SECOND OUTPUT IS PRESENT AND WHEN AT THE SAME TIME SAID ILLUMINATION FROM SAID SECOND LIGHT SOURCE EXCEEDS A PREDETERMINED VALUE.
Specification