SU758096A1 - High-voltage stabilizer with temperature compensation - Google Patents

Description

The invention relates to electrical engineering and can be used for

power supply cathode tubes. e

Known high-voltage voltage regulator With the use of two series-connected regulating transistors £ ΐ].

The closest predlagaemomu- ιθ stabilizer with high voltage · temperature compensation comprises a series connection of a busbar regulating member and a step-up voltage converter Tran- sformatorom, the secondary winding Ko ^'e torogo voltage multiplier is enabled, the DC amplifier whose output is connected to the control the input of the regulating element, and one of the inputs to the voltage divider, capacitor and resistor £ 2].

The disadvantage of this stabilizer is that the input supply voltage source has a gal-25 vanical connection to the housing, as a result of which it is necessary to additionally create an intermediate artificial supply voltage network having a galvanic connection to the housing. Therefore, the device has low efficiency and large overall mass characteristics.

The purpose of the invention is to increase the efficiency and reduce the overall mass characteristics of the high voltage stabilizer.

This goal is achieved by the fact that. in a high voltage stabilizer with temperature compensation, an input resistor is connected to the output circuit of the converter between its output and the input of the voltage multiplier, which is shunted by a series circuit from the specified capacitor and the primary winding of the inserted transformer, one of the secondary windings of which is connected to the common capacitor bus, and another pin is connected to the cathode of the inserted diode, the anode of which is connected to another plate of the inserted capacitor and through a resistor to another input of the DC amplifier, moreover, the connection point of the inserted resistor and the multiplier input is connected to the common bus.

FIG. 1 shows a block diagram

high voltage stabilizer with

3

758096

four

temperature compensation with grounded plus; Fig 2 - the same, with grounded minus; in fig. 3 is an electrical circuit diagram of a high voltage stabilizer with temperature compensation with a grounded υ plus. five

A high voltage stabilizer with temperature compensation contains

regulating element 1, connected in series to the power bus, usi (direct current 2 voltage 2, reference voltage source 3 ’ka zener diode, voltage measuring divider 4.

Voltage converter 5, the voltage multiplier 6, wherein a mes-, _ the compounds ear- inverter ¹⁵ supply and additional capacitor 7 connected to the output of the resistor 8, the other output is connected to the ground potential point, and between the other terminal of the capacitor 7 and the point zeroth 20th potential includes the primary winding of the transformer 9, the output of the secondary winding. Which is connected to the output of the second capacitor 10 and to the negative pole of the input voltage source Ϊ5, and the other to the anode of the diode 11, the cathode of which connected to another output of the second capacitor and through resistors 12 and 13 to the input of the DC amplifier and the reference voltage source, the DC amplifier 2 being made on the chip 14, the tantransistor 15 and the resistor 16, and the chip 14'- with contacts

¹⁷ ~ ²² · 35

The device works as follows.

With increasing current load on you-, during the high voltage stabilizer · decreases, and the negative feedback voltage from the change in load current on the resistor 8 increases. At the same time, DC and AC voltages are distinguished on the resistor 8, which are negative feedback voltages from a change in the load current. The alternating voltage from the resistor 8 through the capacitor 7 is fed to the primary winding of the transformer 9 and is transformed into the secondary winding of the transformer. This is the alternating voltage of the rectifier using diode 11, capacitor 10 and through the resistor 12 of the voltage divider is fed to the input of the amplifier 2 DC and pin 21, made ₅₅ on the chip 14 type TU1401V. ³³

This solution provides a galvanic bundle of input voltage source from the case. Since the negative feedback voltage from the change in the load current at the input of the chip increases, the potential of the contact 19 of the chip decreases. Base potential of transistor 1? ₍ DC amplifier 2 becomes more negative. Since the emitter of transistor 15 is at a constant potential of the reference voltage of Zener diode 3, and the potential of its base has become more negative, this causes the base current and, therefore, the collector current of transistor 15 to decrease. Since the collector current of the transistor 15 and the base of the regulating element 1 flows through the same resistor 16, a decrease in the collector current of the transistor 15 leads to an increase in the base current of the regulating element. guliruyuschego.elementa reduces the resistance transition emitterkollektornogo regulatory element. The voltage drop across the control 'element decreases and the output voltage stabilizer returns to the value. In the reverse process of the case of reducing the load GOKa.

To obtain an output voltage with a grounded minus, the diodes in the voltage multiplier 6 and the diode 11 must be connected in the opposite direction, the connection point of the diode 11 and the capacitor 10 is connected to the inverting input of the DC amplifier and to the measuring voltage divider 4 through resistors 12 and 13, as shown in block diagram (figure 2).

The use of the proposed device allows you to apply a high-voltage stabilizer in the onboard equipment, as well as connect it to a rectifier directly connected to an AC voltage source, for example, 220V frequency. 50 Hz, since the input supply voltage source is galvanically connected from the case. In this case, there is no need for an intermediate transformation of the supply voltage Thus, it is possible to create a device without an intermediate voltage conversion of the power supply network or without a power input transformer.

Claims (1)

Claim A high-voltage stabilizer with temperature compensation, containing a regulating element connected in series to the power bus and a voltage converter with a step-up transformer, in the secondary winding of which a voltage multiplier is connected, a DC amplifier, the output of which is connected to the control input of the regulating element, and one of the inputs to a voltage divider, a capacitor and a resistor, characterized in that, in order to increase efficiency and reduce overall-mass characteristics, the output circuit of the converter between its output and the input of the voltage multiplier is enabled entered5 758096 6 a resistor, a shunted series circuit from the specified capacitor and primary winding of the inserted transformer, y ^ from the terminals of the secondary winding of which is connected to one plate of the inserted capacitor and to 5 common bus, and the other output is connected to the cathode of the inserted diode, the anode of which is connected to another lining of the injected capacitor, and through a resistor to another input of the DC amplifier, the connection point of the inserted resistor and the multiplier input being connected to the common bus.