SU838689A1 - Pulse voltage stabilizer - Google Patents

Description

(54) PULSE VOLTAGE STABILIZER

I

The invention relates to radio electronic power sources.

A pulsed voltage regulator is known that includes a blocking generator, a semiconductor triode that controls the operation of blocking generator 1.

Closest to the technical essence proposed is a switching voltage regulator containing a series regulating element consisting of power and matching transistors with an LCD filter at the output, an output resistive voltage divider connected to the input of the comparator unit 2.

A disadvantage of this device is the presence of a galvanic connection between the input of the comparison unit and the collector of the power transistor of the regulating element.

The purpose of the invention is to protect the regulating element against overloads and short circuits, reducing the ripple level and increasing the stability of the output voltage.

The goal is achieved by introducing two capacitors and two resistors into the voltage regulator, the first capacitor being connected between the input of the comparison unit and the collector of the power transistor of the regulating element, the second capacitor between the input of the reference unit and the emitter of the matching transistor of the regulating element and the first resistor is between the output of the comparison unit and the input of the regulating element, the second resistor is between the output of the comparison unit and the common bus.

The drawing shows a schematic diagram of the proposed pulsed stabilizer.

The stabilizer contains a series regulating element consisting of matching 1 and power 2 transistors, a choke 3, a resistive divider 4 and 5 of the voltage, a comparison unit comprising a resistor 6, a zener diode 7 and a transistor 8. two supply lines are positive 9 and negative 10, capacitor 11, diode 12 and load 13. In addition, the device contains a capacitor 14 and a diode 15, two additional capacitors 16 and 17 and two additional resistors 18 and 19.

The scheme works as follows.

When the input voltage is turned on, the transistors 1 and 2 of the composite regulating iiiUT () element are enriched, charge the capacitor 11. If the voltage on this cooler is lower than the uranium voltage (transients 1, 2 and 8 are open), then the electromagnetic energy is stored in the choke 3 . By approximating the level that is laid out with the weakness of resistors 4 and 5, the voltage on the capacitor 11 (on the divider) is compared with the emitter voltage of the transistor 8, mounted with the HOMoHihK) zener diode 7.

If the emitter notifier of transistor 8 becomes more active to its base, then one or more of the output of the collector is increased and increases in voltage, which causes a decrease in the base potential of the first 1 and second 2 transistors regul, 1iruk, ptsogo element, b. lagodar 11a; It is applied through a capacitor 16, the occurrence of the tiponecca is lanning transistors 1 and 2 pery.iiipyioHiero of the element.

As a result of this operation, the process is almost unchanged, and the stored dross, 3 ene) is lagging behind ;-) to r-load 13 through diode 12.

The circuit operates in the auto () K (), 1 modulated mode with varying iodine volts-1 variation of the input paired and current in the load for: iroho;;.. Perv .HipyioHiero em.asmept; (on transistors 1 and 2) in the closed state of Nin.

The purity of ks.1mutanie depends on the inductance of the inductance of droplets 3, the capacitance of the condenser O15 11 and K .;

In the case of a short circuit-ii-cpaisiuni unit and a transistor 8;) are faulty, wh (leads to the interspersing of transistors i, 2 and 8 and its state is 3; the niran is maintained until the short signal disappears.

Into the den in the circuit of the doo, the capacitive capacitance is 16 nosvo, 1 et C (.) R positively K) feedback between trus; lis tp in 2 n 8 and conditions of stability; x self-oscillations of the device, at the same time c1 of; tv | -sation OUT1CH)) zhenn, blah1H / yes) capacitive aract) at the reverse.

Introduction of the final solver; s: YG (pa 17 iozvo, 1 e1 is also available, ipo.powering, thanks to the introduction of capacitive negative feedback through the base of the transistor 8 and the transistor 1 emitter.

The introduction of resistor 18 increases the feedback from between transistors 1 and 8 and allows the introduction of a threshold for limiting the maximum current in the load.

The introduction of the resistor 19 provides the opening potential from the negative busbar voltage to the base of the transistor |) a 1, which guarantees the opening of the transistor 1 and the device Zaius in extreme conditions.

Diode 15 punctures the em.ntterpobaz (; - the first unpredicted tra) of the resistor 1 and blocks it from being disturbed by the appearance of an impuser on it, i.e., on the other hand,

Immune stabilizer. Impedance, iod | 5zh | ttsii Gloyoed (.) Tipper and), 1st, the state of 1 of the power and I agree transistors with 1 (l) -fi, 1st

output, output resistance. Tel. of nanometer, connected with input i b: kzha comparison, different teu |, that, in order to zashmty regulate him .. from iep ipv3 () K and soot up for ka Ie kani, lower level; - well ; 1eatsy and 11 (.) Sggy) and: 1n.noti output voltage, in ne; h) entered .pu capacitor and two resistors, with the first condensate) vk, kidney between nho., Ohm b.comparison and count. the vector of eilovo | about the transistor regulates the e ... e. meggga,

vtoro. capacitor vk; iochen. exit (; mb; k) of comparison and smart of the co-operating transistor of the regulating element, and iiepvyy resistor included. between output (d (: J b. of comparison and in the course of control 1c1o -j, ie. Mej4ta, resistor enabled between vg.1

unit of comparison and common; Sources of information, taken into account during exertion 1. Author;) e you see..1stvo C (275163, cl, G 05 F Ü56. 196U.

2.. The copyright certificate) (. (

Claims (1)

Claim The pulse stabilizer is energized and I, containing a serial control element, consisting of power and matching transistors with an LCD filter at the output, an output resistive voltage divider connected to the input of the comparison unit, characterized in that, in order to protect the regulatory element from overload and short circuit , to reduce ripple and increase the stability of the output voltage, two capacitors and two resistors are introduced into it, and the first capacitor is connected between the input of the comparison unit and the collector m of the power transistor of the regulatory element, the second capacitor is connected between the input of the comparison unit and the emitter of the matching transistor of the regulatory element, and the first resistor is connected between the output of the comparison unit and the input of the regulatory element, the second resistor is connected between the output of the comparison unit and the common bus.