SU1403347A1 - Integrator - Google Patents

Abstract

The invention can be used in information collection and processing systems. The integrator contains an input bus 1, a resistor 2, an operational amplifier 3, a common bus, a diode 4, a capacitor 5 and an inductance 6, the inductance value L of which is chosen from the condition Lg cG / 160011 C, where o is the pulse duration at the integrator input; C - the value of the capacitor. The integrator is reliable in operation. 1 il.

Description

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/ Z

| 5-4IZ

four

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i The invention relates to a pulsed technique and can be used: but in information gathering and processing systems.

The aim of the invention is to increase the reliability of operation by eliminating synchronization tools and a split key and improving the reliability of measurements by eliminating the loss of information when switching keys when measuring uncorrected pulses. The drawing shows the electrical circuit of the proposed device. I The integrator contains an input bus | 1, which through a resistor 2 is connected to the inverting input of an operational amplifier 3, the non-inverting 1 input of which is connected to the common bus | device, and the output through a parallel diode 4 and a capacitor 5 s | its inverting input, parallel- | IO to the capacitor 5 is connected induction; 6, the parameters of which are chosen by SOTCH from the condition

0)

| where Q

cut

e. (10-20) WITH res,

 resonant frequency of the circuit

CD

6K

- frequency is first

contact information; the harmonics decomposed in the Fourier series of the initial pulse of arbitrary shape The parameters of the circuit are chosen as follows.

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L - inductance value 6j capacitor capacitance value

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to i

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- duration

input

momentum.

The integrating capacitance of the capacitor 4 must comply with the following relationship:

tt

g; i5ili.

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for reasons of high accuracy of integration of the input pulse with a sufficient efficiency of the circuit, 1 ×, Rg is the input resistance of the integrator and u; - input voltage amplitude — the integrator output voltage amplitude.

The inductance is chosen from the condition

Sor, (10 - 20) O

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In this case, the reactance of the elements of the feedback circuit is in the ratio

WITH

Sx

L (} --- 5 s „ь

which provides a purely capacitive feedback circuit response. If this is not followed, t „e“ with

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five

five

0

0

five

0

g

0

five

the inductive branch, by reducing the reactance, will introduce an error in the result of measuring the area of the pulse. Thus, the minimum possible inductance is

L

oi

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 The i600 A maximum inductance value is limited by design and considerations (# 1 is acceptable for the geometric inductance size).

Claims (1)

The output voltage of the integrator in the absence of an input measured pulse ire changes under the influence of the input currents and the bias voltage of the zero amplifier 3 ". This is due to the fact that due to the small value of the active resistance of the inductance, the gain of the amplifier with direct current is equal to one. The integrator of the pulse under investigation, the feedback circuit response is purely capacitive in nature due to the high reactive resistance of the 5th branch induction. On the capacitor 5 of the feedback circuit, the process of integrating the pulse under investigation occurs. Upon termination of the pulse under study on the integrator, the capacitor charged to a certain potential begins to discharge on the feedback circuit of the feedback circuit, damping harmonic oscillations occur at the frequency of CO “Turn on the diode 4 to the feedback circuit parallel to the contour in polarity is inverse to the useful output signal, which allows limiting the oscillatory process in the resonant circuit to 1/4 Tpgj, the cat size swarm limited to the minimum repetition period of the measured input pulses. Invention Formula An integrator, containing an input bus that is connected via a connection resistor; 31403347 yen with inverting input opera-inductance, the parameters of which are the output amplifier, non-inverting are selected from the condition of which the input is connected to the common bus; i devices, output through parallel i L j 51 DuU II C is connected to a diode and a capacitor is connected to its inverting input, where is the pulse duration for which, in particular, the integrator input; In order to increase the reliability of operation, the capacitance is connected to a capacitor parallel to a capacitor.