SU365821A1 - PULSE FORMER - Google Patents

Description

one

The invention relates to a pulse technique and can be used in radio and electrical measuring devices.

A shaper-pulse is known that contains a rectifier, two comparison channels, consisting of compressor, inverter and triggers.

However, the Formula | Irovatel has a duty cycle that varies with frequency.

In order to obtain two pulses with a constant well in the proposed shaper, the comparator output of the first channel is connected to one of the trigger inputs of the second channel, and the comparator output of the second channel is connected via an inverter to one of the trigger inputs of the first channel.

FIG. 1 shows the block diagram of the proposed shaper; in fig. 2 is a voltage chart.

The device consists of a rectifier / filter and an output divider that allows you to receive output voltages with values proportional to the amplitude and amplitude of the input overvoltage voltage. The outputs of the rectifier are connected d, va comparator 2 and 3, the outputs of which are connected two inverters 4 and 5 and two: symmetric trigger 6 and 7, and the outputs; Inverters 4 and 5 are connected to the inputs of the flip-flops 6 and 7.

The input voltage from the generator 8 is fed to the inputs of the rectifier 1 and Comparators 2 and 5, to the last (besides the alternator, two more rectifiers are fed to the outputs from the outputs: to the comparator 2, Ki 4 - CUm (K + C) Um is fed , and on the comparator 3 - (K-C) and t.

At the output of the compactor 2, the voltage pulse Uz is removed, and at the output of the comparator 5 - C / 3. These pulses are controlled by a trigger 7, at the output of which we obtain a voltage pulse UT. The trigger 6 is controlled by inverted pulses f / a and f / j, and the voltage pulse is removed at its output.

Not. The magnitude of the phase shift between the output impulses is regulated by means of the output divider rectifiers; / Done

 (/ С + С) And / Made, (К-С).

The pulse duration Hz is determined from the expression

("" Ny SarscosC / C + C),

but for ipulse bz we have

 IP, 2arccos (/ C-C)

and the phase shift between the pulse fronts (/ 6 and i / 7 is equal to

 c6s (/ rb C) -f ars cos (K-C) -f (K, C) Subject from FOR For the Peacemaker of pulses containing a rectifier, two comparison channels, consisting of comparators, inverters and triggers, 5 characterized by that, in order to obtain two pulses with a constant duty ratio, the output of the first channel comparator is connected (to one of the trigger inputs of the second channel, and the output of the second channel commator is connected via an inverter to one of the trigger inputs of the first channel.