RU-2861379-C1 - CONTINUOUS VOLTAGE REGULATOR

Abstract

FIELD: electrical engineering. SUBSTANCE: invention relates to the field of secondary power supplies for electrical and radio-electronic equipment, and can be used in the design and development of voltage regulators for various purposes. The continuous voltage regulator comprises a series transistor regulating element, a direct current amplifier based on an operational amplifier, an output voltage divider, a reference voltage source, and an operational amplifier power supply based on zener diodes, the common point of which is connected to the output terminal of the regulating element. The non-inverting input of the operational amplifier is connected to the midpoint of the output voltage divider through a first input resistor and to the output terminal of the regulating element through a positive feedback resistor. The inverting input of the operational amplifier is connected to the positive output terminal of the regulator through a second input resistor and to the output of the operational amplifier through a negative feedback resistor. A supply voltage divider and a resistive load current sensor are introduced into the voltage regulator. The supply voltage divider is connected to the input terminals of the regulator. The non-inverting input of the operational amplifier is connected to the midpoint of said voltage divider through a third input resistor. The resistive load current sensor is connected between the output terminal of the regulating element and the positive output terminal of the regulator. EFFECT: simplification of the circuit and increase in reliability, as well as an increase in the output voltage stabilisation coefficient of the continuous voltage regulator under steady-state and dynamic operating modes – abrupt changes in the supply voltage and load current. 3 cl, 1 dwg

Inventors

• SHUVAEV YURIJ NIKOLAEVICH

Dates

Publication Date

20260505

Application Date

20251112

Claims (3)

1. 1. A continuous voltage stabilizer comprising a series transistor regulating element, a DC amplifier on an operational amplifier, an output voltage divider, a reference voltage source and a power supply for the operational amplifier on zener diodes, characterized in that the common point of the zener diodes is connected to the output terminal of the regulating element, the non-inverting input of the operational amplifier is connected to the midpoint of the output voltage divider through a first input resistor and to the output terminal of the regulating element through a positive feedback resistor, the inverting element of the operational amplifier is connected to the positive output terminal of the stabilizer through a second input resistor and to the output of the operational amplifier through a negative feedback resistor.
2. 2. A continuous voltage stabilizer according to paragraph 1, characterized in that a supply voltage divider is introduced, connected to the input terminals of the stabilizer, and the non-inverting input of the operational amplifier is connected to the midpoint of said voltage divider through a third input resistor.
3. 3. A continuous voltage stabilizer according to paragraph 1, characterized in that a resistive load current sensor is introduced, connected between the output terminal of the regulating element and the positive output terminal of the stabilizer.

Description

The invention relates to the field of electrical engineering, in particular to the field of secondary power sources for electrical and electronic equipment, and can be used in the design and development of voltage stabilizers for various purposes. A pressing technical challenge is the development of new compensating-parametric voltage stabilizer circuits that combine compensating and inertia-free parametric control channels. These stabilizers ensure high output voltage stabilization under all operating conditions, including smooth and sudden changes in supply voltage and load current, particularly when connecting power consumers to the stabilizer output or when their operating mode changes. Compensating voltage stabilizers provide high output voltage stability with smooth changes in destabilizing factors. However, ensuring the required performance under dynamic operating conditions requires significantly more complex stabilizer circuitry: increasing the amplifier gain and introducing additional correction circuits. Known compensating-parametric pulse voltage stabilizers [2 - 4] are complex, contain a large number of elements, and have low reliability. Known continuous compensating-parametric voltage stabilizers [5] have low efficiency - a low coefficient of output voltage stabilization both in steady-state and in transient operating modes - when exposed to destabilizing factors. An analysis of literary sources shows that at present there are no known effective and, at the same time, simple and reliable circuits of compensation-parametric voltage stabilizers. The closest technical solution that can be taken as a prototype is the continuous voltage stabilizer described in [6]. The specified stabilizer contains a series transistor regulator, a DC amplifier built around an operational amplifier, a reference voltage source, and an output voltage divider. A drawback of the prototype is the lack of correction circuits to ensure a specified output voltage stabilization coefficient during sudden changes in supply voltage and load current. The invention solves the problem of ensuring a high coefficient of stabilization of the output voltage of a continuous voltage stabilizer in static and dynamic operating modes, i.e., under smooth and intermittent influence of destabilizing factors. The proposed stabilizer is a device with combined regulation, combining channels for regulation by deviation and by disturbance. To achieve the technical result, correction circuits are introduced into the continuous voltage stabilizer circuit: a resistor voltage divider, the midpoint of which is connected to one of the inputs of the operational amplifier, and a resistor load current sensor included in the load circuit. What is new in the invention is the introduction of additional corrective elements into the known circuit of a continuous voltage stabilizer to create inertia-free parametric control channels in order to ensure a high coefficient of output voltage stabilization under the influence of various destabilizing factors with a low gain of the DC amplifier. Based on the above, it can be concluded that the proposed device allows for a positive result. The invention is new because, when analyzing available sources of information, no analogues with a similar set of essential features were found. The invention is industrially applicable, as it can be used in the design and development of voltage stabilizers for various purposes. The electrical circuit diagram of the proposed voltage stabilizer is shown in Fig. 1. The continuous voltage stabilizer contains a regulating element 1 on a single or composite transistor, a DC amplifier on an operational amplifier 2, an output voltage divider 3, a reference voltage source and a power supply for the operational amplifier on zener diodes 4 and 5. The common point of zener diodes 4 and 5 is connected to the output terminal of the regulating element 1. The non-inverting input of the operational amplifier 2 is connected to the midpoint of the output voltage divider 3 through the first input resistor 6 and to the output terminal of the regulating element 1 through the positive feedback resistor 7. The inverting input of the operational amplifier 2 is connected to the positive output terminal of the stabilizer 8 through the second input resistor 9 and to the output of the operational amplifier 2 through the negative feedback resistor 10. The stabilizer contains elements of correction circuits (parametric control channels): supply voltage divider 11 and load current sensor 13. The supply voltage divider is connected to the input terminals of the stabilizer, and the non-inverting input of the operational amplifier 2 is connected to the midpoint of this divider through the third input resistor 12. The resistor load current sensor 13 is connected between the output terminal of the regulating element 1 and the positive output terminal 8 of the stabilizer. The following designations are used in the descr