SHAPER OF PERIODIC SEQUENCE OF PACKETS OF PULSES WITH ADJUSTABLE WIDTH, PULSE NUMBER IN PACKET AND FIXED PAUSE BETWEEN PACKETS, EQUAL TO THREE CYCLES

摘要

A shaper of periodic sequence of packets of pulses with adjustable width, pulse number in a packet, fixed pause between the packets, equal to three, comprises two binary counters, first of which is reversible countdown counter having a clock input, a synchronous parallel load enable input and a loading data input, an asynchronous reset, an overflow output. The second counter has a clock input, a counting mode enable input, an asynchronous reset, first and second elements OR, an inverter, a circuit comprising in series connected resistor and capacitor, a start-stop device comprising a synchronous D flip-flop having an asynchronous reset, first and second two-input elements AND. Third reversible binary countdown counter is introduced, which has a clock input, a synchronous parallel load enable input and a loading data input, a counting mode enable input, an asynchronous reset, an overflow output.