SU95956A1 - A method of converting a voltage of a signal into a sequence of pulses modulated in duration depending on the voltage of a signal - Google Patents

Description

The known methods of converting the voltage of a signal into a sequence of pulses modulated in duration provide an almost linear modulation characteristic and a high phase sensitivity of the pulses, however they do not allow to receive pulses whose duration would be independent of the amplitude of the auxiliary voltage.

The difficulty of maintaining the amplitude of the auxiliary clock voltage amplitude complicates the application of well-known methods for quantitative and especially automatic measurements.

The proposed ayosob provides receiving pulses that do not depend on n: them on the amplitude of the auxiliary voltage.

To do this, they divide it by pelipein, have a G1-shaped characteristic, and combine it to exponential. TfiKTOBoii frequency.

The principle of the proposed method of conversion is illustrated by the diagram shown in the drawing.

A non-linear element having a P-o5 different volt-amp characteristic is simultaneously affected by the signal voltage Uc and voltage f7, (i) the exponential clock pulse, i.e.

and., (t) r if,

i Io canst., a prii „

i :: - 0

where f /,; is the voltage of the exponential lp pulse in time from 1f1 to

and “the same voltage in the min. time:,; epi t f.

If the clock frequency is an expope} n; 1ns: the impulse, then the duration

OUTPUT -0 s

- -const. In

therefore depends only on the magnitude of the voltage

/ c and does not depend on the auxiliary voltage.

Various types of relays and relay-trigger circuits are used as a slegent with a U-shaped volt-perforation characteristic. The best results are given by the use of an electron-beam transducer, tube type electronic switch.

In the latter case, the modulation characteristic is approximated to a linear

t (t / c) COnst .- (/ s

by stress

the signal on the electron beam deflection simultaneously from two mutually perpendicular directions and the selection of the appropriate form of co-tact electrodes (electr | 0d; 1) of an electronic coi-switch.

Subject invention

The method of transforming the voltage of a signal into a sequence of pulses modulated in duration in a bismuth from the voltage of a sig; 1 a, using an auxiliary voltage of a tic frequency, so that in order to obtain pulses not dependent on from the amplitude of the auxiliary voltage, a nonlinear element having a U-parameter volt-ampere characteristic, combine the voltage of the signal and an ex- juiential clock pulse.