UA131666U - FORMER OF SINGLE THREE-PHASE SERIES OF PULSEWAYS WITH ADJUSTABLE DURATION AND DELAY OF THE BEGINNING OF FORMATION REGARDING THE STARTING PULSE - Google Patents

Abstract

The shaper of a single three-phase series of pulses with adjustable duration and delay of the beginning of formation relative to the starting pulse contains two binary counters, the first of which is reversible, adjusted to the subtraction mode, the second four-digit cyclic device with a sequence of transitions 0000-0001-0011-011 -1000 (second counter, Johnson counter) with input of synchronous loading permission (transition), input of loading of the first digit connected to the inverse output of the fourth digit; an old-stop device comprising an asynchronous RS-flip-flop circuit consisting of a resistor and a capacitor connected in series; four elements I; three OR elements; two inverters. When setting the shaper to form a single three-phase series, the duration of the first and second pulses of which are equal to four periods of clock pulses, the duration of the third pulse is equal to six periods, with a delay of formation relative to the starting pulse equal to ten periods. The first and third inputs of synchronous parallel loading of the first counter are connected to the level of logical zero, the second input of loading is connected to the level of logical unit, the fourth input of loading is connected to the direct input of overflow.