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TRAFFIC CONTROLLER WITH BINARY COUNTER

  • US 3,775,744 A
  • Filed: 03/29/1971
  • Issued: 11/27/1973
  • Est. Priority Date: 01/31/1968
  • Status: Expired due to Term
First Claim
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1. In a traffic signal controller apparatus comprising, a binary counter having a plurality of bistable stages and at least one input count line and capable of assuming a number of different states each representative of a predetermined traffic flow condition, and manually operated means for generating a single count pulse at a time and thereby selectively advancing the count in said binary counter to thereby establish the next traffic flow condition, said manually operated means comprising, a switch means having an actuated and non-actuated state, power supply means, a uni-junction transistor coupled to said switch means and said power supply means and having a control electrode, and a capacitor coupled to said control electrode, said capacitor adapted to be in a charged condition insufficient to render said uni-junction transistor conductive when said switch means is in its actuated state and adapted to be in a discharge condition rendering said uni-junction transistor conductive when said switch means changes to its non-actuated state thereby generating said count pulse via said capacitor.

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