COMPOSITE TIMING SIGNAL GONERATOR WITH PREDICTABLE OUTPUT LOVEL

摘要

The circuit contains a gate pulse generator and a switched constant voltage source supplied potential divider. A number of picture scan timing signals is entered to the main line feed and output through the switchable potentiometer. These are controlled by a diode switching circuit etc. at their input points. The gate pulse circuit is used to place a second level blanking pulse onto a first longer pulse by feeding its output pulse into the potential divider circuit. The output then carries a combination of flame and line synch. pulses at one level (2.4V) plus the additional combined pulse from the gate circuit at the higher (+7V) level.