SU515099A1

SU515099A1 - Switching voltage regulator

Info

Publication number: SU515099A1
Application number: SU2093707A
Authority: SU
Inventors: Владимир Викторович Типаев; Юрий Николаевич Шуваев
Original assignee: Предприятие П/Я А-7866
Priority date: 1975-01-06
Filing date: 1975-01-06
Publication date: 1976-05-25

Description

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Изобретение относитс к электротехнике и можетбыть использовано при построении источников, электропитани радиоэлектронной аппарштуры различного назначени ,The invention relates to electrical engineering and can be used in the construction of sources that supply electrical equipment to a radio electronic apparatuses for various purposes.

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Коммутируемые стабилизаторы напр гкени Switched stabilizers, for example

используют дл питани устройств, быстрое включение и вьпслючение которых необходимо . осушествп ть сн тием питающего напрйЖени . При этом на выходе выключенного стабили- ю затора не должно быть напр жени обратной . пол даости, а также значительного по величине (более О,2-О,3 В) остаточного напр же нн пр мой пол рности.They are used to power devices whose quick switching on and off are necessary. Removing the power supply. At the same time, at the output of the switched off stabilization of the mash there should be no reverse voltage. fields, as well as significant ones (more than O, 2-O, 3 V) residual stresses of direct polarity.

Известны стабилизаторы, напр жени , содержащие регулирующий транзистор, включенг ный последовательно с нагрузкой, усилитель обратной св зи на транзисторе, база KoTOpcs-r Г01саединена с делителем выходного напр же-20 ни , эмиттер - с источником опорного напр жёни , а коллектор подключен к базе.регулирующего транзистора, и вспомогательный ис.Точник питани , положительный полюс которого через резистор соединен с катодом стаби-25Known stabilizers, voltages containing a regulating transistor connected in series with the load, a feedback amplifier on the transistor, the base KoTOpcs-r G01 is connected to the output voltage divider 20, the emitter is connected to the base voltage regulating transistor, and auxiliary power supply. Power supply, the positive pole of which through a resistor is connected to the cathode of the stabilizer-25

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1штрона, анодом подключенного к выходнб му зажиму и эмиттеру регултфующего транзистора , и резистором, подключенным к коллектору транзистора усилител обратной св зи .1, an anode connected to the output terminal and emitter of the regulating transistor, and a resistor connected to the collector of the transistor of the feedback amplifier.

Однако D известном устройстве по вл етс значительное остаточное напр жение при запирании регултгрующего транзистора.However, in the known device, a significant residual voltage appears when the regulating transistor is locked.

При использовании дл питани усилител посто нного тока вспомогательного источника на выходе выключенного стабилизатора по вл етс напр жение обратной пол рности .When an auxiliary source is used to power the dc amplifier, the reverse polarity appears at the output of the off stabilizer.

Целью изобретени вл етс уменьщение остаточного напр жени и устгранении напр жени обратной пол рности на выходе CTiaбилизатора при его выключении.The aim of the invention is to reduce the residual voltage and the reverse polarity voltage at the CTia output of the killer when it is turned off.

Claims

For a stabilizer, a negative plus E of the help source is connected to silicon cathodes of a silicon and germanium diodes, the first of which is connected to the positive and the second to the negative output terminals, and the cathode of the zener diode is connected to the switching transistor collector. whose emitter is connected ri to one of the input terminals. The drawing shows the electrical circuit of the stabilizer. The switched voltage regulator contains an integral control transistor 1, a DC amplifier on transistor 2, a source of detection of a voltage across the zener diode 3i resistive divider voltage 4, and an auxiliary source 5 with a zener diode b. In addition, the stabilizer includes a switching transistor 7 connected by a collector to one of the terminals of auxiliary source 5, and the emitter to a grounded output terminal, for example, to a negative one. One of the terminals of the auxiliary source 5 is connected to; the silicon diode 8 and germanium diode 9 cathodes. The anodes of diodes 8 and 9 are connected, respectively, with the positive and negative output terminals of the stabilizer. The stabilizer works as follows. In the absence of a control (unlocking) signal based on the switching transistor 7, this transistor is locked and the stabilizer operates in the usual way, providing a stabilization on the output; zoned voltage. In this case, the current of the power supply source 5 flows through the open cell circuit 8. The diode 9 is at this time during the reverse of the voltage of the reverse polarity. When the control signal is applied to the base of the switching transistor 7, this transistor opens and bridges the stabilizer of the auxiliary source 5 and, therefore, transitions, the emitter is the base of the regulating transistor 1, which closes and provides an output voltage close to zero. in the open state of the switching transistor 7, the auxiliary source current flows through this transistor and through both diodes 8 and 9. In this case, the residual voltage at the output of the stabilizer is determined by the difference of the direct voltage Adeny is the voltage on silicon diode 8 and he {emay diode 9 and does not exceed (0,2-О, ЗВ). The possibility of appearing on the nat stabilizer; reverse polarity is completely excluded. The invention The switched voltage regulator, j containing a regulating transistor connected in series to the output bus, amplifies the feedback on the transistor, ba-; for which it is connected to a separator, an output voltage, an emitter - with a source of voltage support, and a collector connected to a regulating transistor base, and an auxiliary source w-1 tani, a positive COU9 of which is connected via a resistor to a cathode of a zener diode connected to an output terminal and a regudi emitter. transistor, and a resistor connected to the collector of the transistor of the amplifier i feedback, and with the fact that, in order to reduce the residual voltage; and to eliminate the reverse voltage, polarity at the output of the stabilizer when it is turned off, the negative pole of the auxiliary power source is connected to silicon cathodes n; germanium diodes, the first of which is connected to the positive anode and the second to the negative output terminals, while the cathode of the stabilizer is connected to the collector of the switching transistor, the emitter of which is p-key to one of the output terminals.