BE457810A

BE457810A -

Info

Publication number: BE457810A
Authority: BE
Priority date: 1943-10-25
Also published as: CH248617A; FR960752A

Description

       

   <EMI ID=1.1> 

  
La présente invention concerne des dispositifs régulateurs ou stabilisateurs de tensions alternatives, et a notamment pour objet de prévoir des moyens pour éviter dans ces dispositifs les divers inconvénients qui se rencontrent ordinairement dans les . réalisations connues, tels que : constante de temps trop élevée, instabilité vis-à-vis de la fréquence et de la charge, mise au point souvent délicate.

  
Dans les dispositifs régulateurs mettant en oeuvre des oa-

  
 <EMI ID=2.1> 

  
un transformateur, plus ou moins satura par un courent continu et disposé entre l'entrée et la sortie du régulateur; le courant continu est contrôla par un amplificateur qui permet de comparer la

  
 <EMI ID=3.1> 

  
de l'inclinaison de la caractéristique de tension de sortie, afin d'obtenir une stabilisation élevée, ou même une régulation inver-

  
 <EMI ID=4.1>  <EMI ID=5.1> 

  
but de la mise en fonctionnement du régulateur.

  
Les caractéristiques de l'invention seront exposées en détail dans la description suivante, donnée en relation avec les dessins annexés, dans lesquels : <EMI ID=6.1>  ouit d'un régulateur de tension alternative, mettant en oeuvre des caractéristiques de l'invention;

  
 <EMI ID=7.1> 

  
circuit régulateur de la figure 1 permettant d'assurer une inclinaison ajustable de la caractéristique de tension de sortie; et, La figure 4 représente un autre exemple de régulateur selon l'invention, utilisant un transformateur à. circuit magnétique saturable.

  
Dans le schéma de la figure 1, un redresseur 1 est deatiné à fournir la tension de contrôle commandée par la tension de .or <EMI ID=8.1> 

  
Cette tension de contrôle est comparée par le tube à décharge 3, au moyen du potentiomètre 2, avec la tension de référence fournie en 4 par une lampe à décharge (lampe à néon par exemple) ou par une batterie.

  
Les variations du potentiel de grille du tube 3 sont amplifiées et recueillies sur la plaque, puis appliquées sur le tube

  
 <EMI ID=9.1> 

  
 <EMI ID=10.1> 

  
et la sortie S du régulateur.

  
L'inclinaison de la caractéristique de la tension de sor-

  
 <EMI ID=11.1> 

  
prévoyant une structure de redresseur 1 dans laquelle des moyens de

  
 <EMI ID=12.1> 
-res 2 et 3. Dans ces figures, le redresseur 10 est suivi d'une



   <EMI ID = 1.1>

  
The present invention relates to devices for regulating or stabilizing alternating voltages, and its object in particular is to provide means for avoiding in these devices the various drawbacks which are usually encountered in them. known embodiments, such as: time constant too high, instability with respect to the frequency and the load, often delicate adjustment.

  
In regulatory devices implementing oa-

  
 <EMI ID = 2.1>

  
a transformer, more or less saturated by a continuous current and placed between the input and the output of the regulator; the direct current is controlled by an amplifier which makes it possible to compare the

  
 <EMI ID = 3.1>

  
inclination of the output voltage characteristic, in order to achieve high stabilization, or even reverse regulation.

  
 <EMI ID = 4.1> <EMI ID = 5.1>

  
purpose of operating the regulator.

  
The characteristics of the invention will be explained in detail in the following description, given in relation to the appended drawings, in which: <EMI ID = 6.1> ouit of an alternating voltage regulator, implementing characteristics of the invention ;

  
 <EMI ID = 7.1>

  
regulator circuit of FIG. 1 for ensuring an adjustable inclination of the output voltage characteristic; and, Figure 4 shows another example of a regulator according to the invention, using a transformer. saturable magnetic circuit.

  
In the diagram of figure 1, a rectifier 1 is deatiné to provide the control voltage controlled by the voltage of .or <EMI ID = 8.1>

  
This control voltage is compared by the discharge tube 3, by means of the potentiometer 2, with the reference voltage supplied at 4 by a discharge lamp (neon lamp for example) or by a battery.

  
The variations of the grid potential of tube 3 are amplified and collected on the plate, then applied to the tube

  
 <EMI ID = 9.1>

  
 <EMI ID = 10.1>

  
and the output S of the regulator.

  
The inclination of the output voltage characteristic

  
 <EMI ID = 11.1>

  
providing a rectifier structure 1 in which means for

  
 <EMI ID = 12.1>
-res 2 and 3. In these figures, the rectifier 10 is followed by a

Claims

filtering cell which has an adjustable resistance 11, allows -that is to charge to a greater or lesser degree the capacitor out of the filter to a value chosen between the average voltage and <EMI ID = 13.1>

The voltage variations, due to heating of the device, are compensated, according to another characteristic of the invention, by means of a resistor 9, variable as a function of the temperature and <EMI ID = 14.1>

predetermined time frame. Part of this resistor, or yet another resistor, may be provided non-insulated to compensate for variations in ambient temperature. Such variable resistances as a function of temperature are well known in them *

gas discharge tube, in order to increase the sensitivity of the device.

indicated at 14 in figure 4. In this case, a single discharge tube 13

to the self-inductance or to the transformer to reverse the direction of action of the direct current according to a well-known saturation process.

These provisions are not restrictive, and it is clear that

of the invitation.

.

The present invention relates to devices for regulating or stabilizing alternating voltages, using in particular a selfinductor or a transformer with a saturable magnetic circuit, and controlled by one or more electronic tubes to compensate for variations in the alternating voltage, the regulation being obtained by comparison between the rectified output voltage and a reference voltage.

In particular, the invention provides means for allowing adjustment of the inclination of the characteristic of the output voltage in order to obtain a high degree of stabilization or even reverse regulation.

The invention also provides means for compensating for the voltage variation as a function of temperature, by resistors whose value varies according to the temperature and of which at least a part is suitably insulated, the other part serving to compensate for the variations. of ambient temperature.