SU1293838A1 - Device for stabilizing oscillation amplitude - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is to increase the speed of stabilization of the amplitude of oscillations. The device contains a control unit (CU) 1 with an oscillation amplitude, a peak detector (PD) 2 with a reset, a comparator 3, two pulse formers (H1) 4 and 5, a control key 6, an integrating element 7 and a source 8 of the reference voltage. The goal is achieved by introducing OD 2 and M 5, with which voltage impulses corresponding to the amplitude of the output signal are received in the integrating link 7 in each period of the output signal. The voltage of these pulses is compared with the reference voltage of source 8 and the result is used to control the amplitude of the output oscillations in the CU 1. 2 Il. sl tc iD from 00 to 00

Description

This invention relates to radio engineering and can be used in radiohemicals or. radio transmitting devices, as well as in radio measuring devices,

The purpose of the invention is to increase the speed of stabilization of the amplitude of oscillations.

Fig. 1 shows the structural electrical circuit of the device for stabilizing the amplitude of oscillations; Fig. 2 shows timing diagrams explaining the principle of operation of the device.

The device for stabilizing the amplitude of the oscillations comprises a vibration amplitude control unit 1, a peak detector 2 with a reset, a comparator 3, a first pulse shaper 4, a second pulse shaper 5, a control key 6, an integrating element 7 and a source 8 of the reference voltage.

A device for stabilizing Amshtidum oscillations works as follows.

The signal from the output of an alternating voltage source (e.g., an auto-oscillator or amplifier) is fed to the input of an oscillation amplitude control unit I.

From the output of the oscillation amplitude control unit 1, the signal is fed to the input of the peak detector 2 with a reset as well as to the input of the comparator 3, in which negative and positive voltage drops (FIG. 26) are generated during zero crossing of the output voltage the voltage from the output of the comparator 3 starts the first driver of the 4 pulses, and at its output a pulse is formed (Fig. 2c), which controls the activation of the control key 6, which is open in its initial state. The maximum amplitude of the voltage of the positive half-wave of the output signal is stored in the peak detector 2 with a reset (FIG. 2d) and when unlocked the control key 6, this voltage enters the integrating element 7 during the time interval determined by the pulse duration of the first driver 4 pulses. Back front them

five

0

five

0

five

Q

0

five

the pulse of the first pulse shaper A is launched by the second pulse shaper 5, at the output of which a pulse is formed (Fig. 2d), inputted to the reset input of the peak detector 2 with a reset, the output voltage of which (Fig. 2d) is reset to zero,

in each successive period of the output signal, this sequence of operations is repeated. In this case, the voltage pulses corresponding to the output amplitude value are supplied to the integrating link 7 in each period of the output signal. The voltage of these pulses is compared with the reference voltage of the reference voltage source 8 and is used to control the amplitude of the output oscillations in the vibration amplitude control unit 1 .

The total pulse duration tj and Tj of the first and second pulse formers 4 and 5 must satisfy the condition

t :,

  mom

where is the maximum frequency of the voltage being stabilized.

Claims (1)

Invention Formula A device for stabilizing the amplitude of oscillations, comprising a series-connected oscillation amplitude control unit, a comparator and a first pulse shaper, serially connected reference voltage source and an integrating element, another input of which is connected to the output of the control key, the output of the first torque generator of the pulses is connected to the control input the controllable key, and the output of the integrating link is connected to the control input of the oscillation amplitude control unit, characterized in that, in order to No speed of stabilization of the amplitude of oscillations, a second pulse shaper and a peak detector with a reset, which is connected between the output of the oscillation control unit and the input of the control key, and a second pulse shaper are connected between the output of the first effect generator and the reset input of the peak detector with a reset, with the entrance 312938384 and the output of the device is stabilized; the input and output of the control unit, the amplitude of oscillations, are corresponding to the amplitude of oscillations. but 0ma2 Editor L.Povkhan Compiled by N.Pavlov Tehred V.Kadar Order 396/59 Circulation 902Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab ,, d, 4/5 Production and printing company, Uzhgorod, Projecto st., 4 Proofreader T. Kolb