SU995074A1 - Dc voltage stabilizer - Google Patents

Description

one

The invention relates to electrical engineering and can be used for sawing various electronic equipment.

A DC voltage regulator is known, which contains a regulating element and a control unit consisting of two asymmetric generators, one of the output transformers of the first generator connected to the input of the second generator transistor 11.

A disadvantage of the known device is the difficulty of controlling the bridge-type regulating element, which, 5 limits the functionality of the stabilizer control circuit.

Closest to the present invention is a DC voltage regulator containing a regulating element 20, made according to a bridge circuit on four controlled keys, one diagonal of this bridge is connected to the input terminals, and the other to the output terminals, and the control node Each of the two asymmetrical magnet-transistor generators, each of whose i transformers has two main output voltages, about & 1 "connected to the regulating element, two count; spiral windings connected one through the first transistor and tabshgatron to the input terminals, the second transistor through another - to the source reference voltage, wherein the first transformer nesimme- ary magnetic transistor oscillator has peppers secondary winding one terminal of which is connected to a differentiating capacitor and a first diode chain 1,2 J.

A disadvantage of the known device is the low coefficient of stabilization and high internal resistance.

The purpose of the invention is to increase the coefficient (} "shenta stabilization and reduction of internal resistance.

The goal is achieved by the fact that two windings are introduced on the transformer of the first map-transistor generator and the time element of the first junction box, which is made according to the scheme of a relaxed generator on a single junction transistor, to the source of the reference voltage, the capacitor of the relaxation generator is shunted by a transistor, the control input of which is connected to the first transformer winding of the first magnetic transistor generator, the output The xation generator is connected to the control input of the thyristor, which is connected to the second input of the first additional winding, the charge circuit of the capacitor of the relaxation generator, which includes the charging unit and the second diode, through the second winding entered B1 to the output circuit of the stabilizer, the input is differentiated the circuit is connected by a resistor, its output through the first diode is connected to the base of the second transistor of the second magnetic-transistor generator, the differentiating chain resistor is connected to the negative input Nome vyuodu, and main output winding magnetically tran zistornyh podyupocheny generators identical in phase opposition to the control inputs of series connected bridge tra ican regulatory elements, ment. FIG. Figure 1 shows the basic stabilizer circuit; in fig. 2 - voltage diagrams, explaining the principle of the stabilizer. The stabilizer contains unbalanced magnetically transformers 1 and 2; transistor generators, transistors 3-6 unbalanced controllers, first diode 7, source 8 of the reference voltage, a differentiating chain including a capacitor 9 and a resistor 10, and an output connected to the base of transistor 6, and an input to one of the windings of the transformer 1, a reactionary -generator, including resistors 11 and 12, a capacitor 13, transistors 14 and 15, a second diode 16 and a charging unit 17, a thyristor 18, a control input connected to the output of the relaxation gene rator, and the anode - to the first additional winding of the transformer 1, resistor 19, bridge regulator on transistors 2O-23, zener diode 24, load 25 .. The device works as follows. Let transistors 3 and 6 be open. In the interval O - fc (2), capacitor 13 is charged through diode 16 and charging unit 17 of the relaxation generator from the winding voltage (Fig. 2, q.). At the moment, the transistor 14 turns on, and then the thyristor 18 and the voltage of the transformer 1 winding through the diode 7 and the differentiated circuit on the capacitor 9 and the resistor 10 (Fig. 2.6) turn off the transistor 6, after which the transistor 5 turns on (Fig. 2) . Thus, the voltage on the windings of transformers 1 and 2 have the form shown in FIG. 2, a and b. The signals are controlled by the transistors 20-23 and, at the load 25, the voltage is BDD, shown in FIG. 2.1. The transistor 15 is used to discharge the capacitor 13, and the resistor 19 to discharge the capacitor 9. The output voltage is stabilized when the input voltage changes as in the known stabilizer. The difference is that the charge circuit 16, 17, the capacitor 13 must be powered by the voltage of the transformer winding 1, the change in amplitude greater than the change in input voltage. Only under this condition is the shift i.). varies so that the stability of the output voltage (due to the zener diode 24 and the source 8 of the reference voltage) does not depend on the change in the input voltage. If the -16, 17 circuit of the capacitor 13 charge, for example, is connected to the input voltage, then all other things being equal, the voltage to the load will not be stable, although each of the generators separately stabilizes the voltage. The introduction of a time delay element imposes certain conditions on the supply voltage of the charging circuit of capacitor 13, and therefore it must be connected to the voltage of the transformer 1 winding. The connection of the output windings of transformers 1 and 2 to the control inputs of transistors 20-23 plays a significant role. The transistors, for example, 20 and 23 must be open- when the transistor 3 and 6 are turned on, and the transistors 20 and 21, respectively, when the transistors 4 and 5 are turned on. O. The return link from load 25 to charge unit 17 allows stabilize with changing load, affecting the duration of the delay. This feedback can be either t electric or optical or personal from the first two. Thus, the introduction of the delay element and the connection of its charge circuit of the capacitor of the relaxation generator to the voltage of the transformer winding of the first carrier of the EMT generator, as well as the connection of the feedback from the stabilizer side allows the output voltage to stabilize and reduce the internal resistance. Formula and 3 o b p. e te n i. A DC voltage stabilizer containing a regulating element made according to a bridge circuit on a controllable keyed path, one diagonal of this bridge is connected to the input leads, and the other to the output terminals, and a control unit consisting of two asymmetric magnetic transistor generators, each of whose transformers has two main output windings connected with a regulating element, two collector windings connected one through the first transistor and stabilized: to one to the input outputs, the other through Ora transistor - the source oportyugo voltage. Moreover, the transformer of the first asymmetric magnet-transistor generator has the first additional winding, one of the conclusions of which is connected to the capacitor of the differential circuit, and the first diode, so that, in order to increase the coefficient stabilization and reduction of internal resistance. a second diode, two hunts on the transformer of the first magneto-transistor generator and a time delay element were introduced; when the latter was installed according to the relaxation generator circuit on a single junction transistor connected to the voltage source oftoporo, the capacitor of the relaxation generator was connected to the input transistor the winding of the transformer of the first magneto-transistor generator, the output of the relaxation generator is connected to the thyristor control input, the anode of the single to the second output of the first additional link, the charge circuit of the capacitor of the relaxation generator, V1 unit to the zaradny unit and the second diode, through the second input winding is included in the output stabilizer circuit, input di4) of the enzyming chain is threaded by a resistor to the base of the second transistor of the second magneto-transistor reHepaTopai a resistor of the differentiating point. connected to the / negative input, and on the output output of the hunting magnet of the transistor generators is identical yucheny in phase opposition to the control inputs of transistors connected Sequence no bridge regulating elegdenesa. - Sources of information taken into account during the examination 1. Author's certificate of the SSOR No. 602020, cl. G O5 F 1/56, 197 ©. 2. USSR author's certificate number 752291, cl. QO5P 1/56, 1978.

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Claims (2)

Claim A voltage regulator of DC 15 current, containing a control element made in a bridge circuit with four controlled keys, one diagonal of this bridge is connected to the input terminals, and the other to the output terminals, and the control unit, consisting of two asymmetric magnetic transistor generators, each of the transformers which has two main output windings associated with the regulating element, 25 two collector windings connected one through the first transistor and a zener diode to the input terminals, the other through Torah transistor - a reference voltage source, the transformer ₃₀ Gross carrying of unsymmetrical magnetic oscillator transistor having a first secondary winding, one terminal of which is connected to a capacitor of the differentiating circuit and the first diode of tli- _3J h and w and d w with I the fact that, in order to increase the stabilization coefficient and reduce internal resistance, a second diode, two windings on the transformer of the first magneto-transistor generator and a time delay element are introduced, and the latter is made according to the schemes • relaxation oscillator unijunction transistor connected to the source oyornogo voltage. the capacitor of the relaxation generator is shunted by a transistor, the control input of which is connected to the first transformer winding of the first magneto-transistor generator, the output of the relaxation generator is connected to the control input of the thyristor, the anode connected to the second output _{: the} first additional winding, the charge circuit of the capacitor of the relaxation generator, including the charging unit and the second diode, through the second input winding is included in the output circuit of the stabilizer, the input of the differentiating chain is shunted by a resistor of its output via a first diode connected to the base of the second transistor of the second transistor magnetic generator; the resistor of the differentiating point is connected to the negative input terminal, and the main output windings of the magneto-transistor generators are identically connected in antiphase to the control inputs of the transistors of the bridge control element connected in series. - Sources of information taken into account during the examination 1. USSR copyright certificate No. 602020, cl. G05F 1/56, 1976. 2. Copyright certificate of the USSR No. 752291, cl. GO5F 1/56, 1978. FIG. f ' ^: ~ - ..... \ FIG. 2