SU790278A1 - Oscillation generator with measured phase - Google Patents

Description

(54) GENERATOR OF VIBRATIONS WITH A CHANGE PHASE

one

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

A variable phase oscillator is known, comprising a phase shifting element, a quadrupole and a phase inverter 1.

The drawback of the device is the instability of the amplitude of the phase-controlled oscillation.

The closest to the proposed oscillator with variable phase contains a series-connected triangular pulse generator, a converter of triangular pulses into rectangular, the outputs of which are connected to the inputs of the first adder

R2.

The disadvantage of the device is

low reproduction accuracy of the instantaneous values of the generated signal.

The purpose of the invention is to improve the accuracy of reproducing the instantaneous values of the generated signal.

This goal is achieved by the fact that a second and third adders, first and second level limiters, are introduced into the oscillator with variable (15azol, containing successively connected triangular pulse generator and triangular pulse converter to rectangular outputs of which are connected to the inputs of the first adder which

5 through the second adder connected to the first input of the third adder, the second input of which is connected to the output of the triangular pulse generator, the control inputs of the limiter of the level readers connected to the control bus, the signal input of the first level limiter connected to the output of the converter of triangular pulses into the square, and the signal input the second - with the release of the first adder.

The drawing shows a structural electrical circuit of the proposed generator.

The circuit contains a generator of 1 tri-pole pulses, a converter of 2 triangular pulses into rectangular, first, second and third adders 3, 4 and 5, first 6 and second 7

25 level guards.

The device works as follows.

From the original oscillation of an isosceles triangular shape created by generator 1, using the transform 30

The receiver 2 forms oscillations of a rectangular shape. These vibrations are fed to the inputs of the adder 3 and the image of the oscillation of the sawtooth form.

From the outputs of the converter 2 and the adder 3, through controlled limit stops 6 of the level, respectively, koles, saw-saw and rectangular forms are fed to the inputs of the adder 4

At the output of the adder 4, an auxiliary trapezoidal oscillation is formed, the shape and amplitude of which are determined by the magnitude of the voltage controlling the operation of the level limiters 6 and 7.

The initial oscillation of an isosceles triangular shape from the output of the generator 1 and the oscillation of the trapezoidal shape 5 of the output of the adder 4 arrive at the inputs of the adder 5 and form an oscillation of the isosceles triangular shape, shifted in phase relative to the initial oscillation of the triangular shape by an amount proportional to the voltage controlling the control operation 7 level.

The dependence of the mechsd change in the phase of the initial oscillation of an isosceles triangular shape and the amplitude of the control voltage is linear.

Claims (2)

1. USSR author's certificate K 365800, cl. H 03 H 7/22, 1971, 2. The UK patent K 1271383, cl. H 3 T, 1972.