SU1423992A1 - Stabilized rectifier - Google Patents

Abstract

The invention relates to the secondary power supply sources of electronic equipment. The aim of the invention is to reduce the volume. Keys 4 and 5 of the resonant voltage regulator 1, performed on after & inductively connected choke 2 and a capacitor 3 are turned on by a signal from the output of the phase-pulse control unit 19. Signal on. Switching off the keys 4 and 5 is formed at the moment when the current of the additional throttle 6, connected in series with the regulating element on the keys 4 and 5 parallel to the capacitor 3, passes through zero. Information on the reduction of the current of additional droplets 6 to zero is removed from the secondary windings 17, 18 of the current transformer 16. The change in the output voltage, taken from the capacitor 3 through the rectifier 41, is carried out by changing the switching points of the keys 4 and 5 of the resonant voltage regulator 1. 2 silt, (L 37W to oo with co to (rig {

Description

The invention relates to electrical engineering and is intended for use in the rectification of alternating voltage with increased frequency / s.

The aim of the invention is to reduce the volume of the stabilized rectifier.

Figure 1 shows a circuit diagram of a stabilized converter; 2 shows timing diagrams for his work.

The stabilized coupler contains a resonant voltage regulator 1, which includes a series-connected choke 2 and a capacitor 3 between the first and second input terminals, a transistor switch 4 5j and an additional choke 6 and diode: 7 - 14. Common droplet 2 point with a capacitor 3 through the primary winding 15 of the current transformer 16 is connected to a common point of series-connected diodes 7 and 1 1, the extreme terminals of which are connected to one power-output of transistor switches 4j5, the other power outputs of which are combined and under Diodes 8 and 12 are connected to the second input terminal bypassing the power outputs of transistor switches 4 and 5, respectively. Series-connected diodes 9e 10 and 13, 14 with common pin 1 (are connected to the control outputs of transistor switches 4, 5 and the outer leads respectively to the off terminals and turning on the transistor switches 4 5 of the resonant voltage regulator 1. The secondary windings 17, 18 of the current transformer 16 are connected in series.

The pulse and phase control unit 19 is connected to the output terminals by a signal input, the synchronizing input terminal is connected to the terminals of the capacitor 3 of the resonant voltage regulator 1, and the output terminals is connected to the output terminals of the transistor switches 4 and 5 of the resonant voltage regulator 1, the Phase-pulse control unit 19 includes A filter 20 is connected between the signal input of the block 19 and the input of the differential amplifier 21. The matching transformer 22 is connected to the synchronization input of the phase phase 22

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pulse unit 19 control. The secondary windings of the matching transformer 22 through series-connected integrating circuits 23, 24 and diodes 25, 26 are connected to the first inputs of the comparators 27, 28, the second inputs of which are connected to the output of the differential amplifier 21.. The outputs of the comparators 27, 28 through amplifiers 29, 30 power is connected to the terminals for turning on the transistor switches 4, 5 of the phase-pulse control unit 19. Free pins of series-connected windings 17, 18 of current transformer 16 through chains of series-connected diode 31 (32), amplifier-limiter 33 (34), differentiating circuit 35- (36), diode 37 (38) and driver 39 (40) of locking the voltages are connected to the off leads of the transistor switches 4, 5 of the resonant voltage regulator 1. The capacitor 3 of the resonant voltage regulator through the rectifier 41 is connected to the output, terminals.

The device works as follows.

An alternating unstabilized voltage that can be characterized by a different shape; rectangular, sinusoidal, etc., without a constant component, goes to the input terminals. At the input of the rectifying unit 41, the voltage has a shape close to sinusoidal (Fig. 2a), since the resonant circuit of the voltage regulator 1 is tuned to the first harmonic of the input voltage. The magnitude of the sinusoidal voltage across the capacitor 3 is determined by the turn-on phase of the transistors 4 and 5 with respect to the moments when the half-wave of the input voltage passes through a zero value. At the same time, the positive and negative half-waves regulate respectively. Transistors 4 and 5 are installed. In parallel with transistors 4 and 5, diodes 8 and 10 protect transistors from reverse voltages. When current flows through the primary winding 15 of the current transformer 16 (FIG. 2B), the secondary windings 17 and 18 form similar voltages, of which the limiting amplifiers 334 34 form a straight line314

coal voltage, the duration of which is almost equal to the duration of the current flow through the current transformer 16 (Fig. 2d). Further, these pulses, having passed the differentiating circuit 35, 36 (Fig. 2e) and the blocking voltage shaper 30 40, are converted into pulses with a duration equal to

Fore

Mula of the invention. A stabilized rectifier comprising a choke and a resonant voltage regulator capacitor connected in series between the first and second input terminals, the capacitor through the rectifier connecting two output terminals.

Noah the absorption time of transistors Q of the AC transistor switches, 4.5 (Fig. 2g), which is 2-5mx5, their leading edge corresponds to the falling edge of the pulses coming from the output of the amplifier 29, 30 of power

the first power terminals of which are connected to the second input terminal; an auxiliary choke, one output of which is connected to the common point of the throttle (fig. 2i). The resulting pulses are 15, the villages and the resonant capacitor are burst onto the base of the transistor control switches 4, 5 and lock them in the corresponding period. In this case, the shutdown occurs when the current in the auxiliary choke is equal to zero. Phase VC: g | yucheni transistor control switches 4 and 5 are set by the control unit 19, which provides a voltage change across the transistors 4

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voltage blinker, phase pulse control unit, the signal input of which is connected to the output terminals, the synchronization input is connected to the rectifier input, and the outputs are connected to the control inputs of the AC transistor switches, characterized in that Vvei 5 and, respectively, at the top of the unit 25 current transformer with primary

41 rectifier. In this case, the matching transformer 22 electrically isolates the control node 19 from the power section of the device, integrates the circuit 23, the diode 25 and the comparator 27 provides for the synchronous connection of the transistor switch 4 with respect to the positive half-wave voltage at the input of the block 41 of the junction, and the integrating circuit 24 and the diode 26 and comp30

and two secondary windings, four diodes, two limiter amplifiers, two differentiating chains and two blocking voltage formers, the primary winding of the current transformer being connected between the other output of the auxiliary power cable and the combined second power terminals of the transistor switches of the alternating current, the secondary windings of the transistor 28 provide synchronous including the current formator, the sequence of the transistor switch 5 with respect to and their extreme conclusions of the corresponding negative half-wave voltage on the input unit 41 righting. Output Voltage Instability — The device is monitored by a differential amplifier 21, which, through a comparator, power amplifier 29, comparator 28, and power amplifier 30, controls the turn-on phase of transistors 4 and 5, stabilizing the output voltage.

ac key switches

the first power outputs of which are connected to the second input terminal, an auxiliary choke, one output of which is connected to the common point of the throttle and the resonant capacitor

voltage blinker, phase-pulse control unit, the signal input of which is connected to the output terminals, the synchronization input is connected to the rectifier input, and the outputs are connected to the control inputs of the AC transistor switches, characterized in that

and two secondary windings, four diodes, two limiter amplifiers, two differentiating chains and two blocking voltage formers, the primary winding of the current transformer being connected between the other, the output of the auxiliary throttle and the combined second power leads of the transistor alternating current switches, the secondary windings of the current transformer their extreme conclusions are consistently included40

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Through the first and second diodes, they are connected to the inputs of the limiting amplifiers, the output of each amplifier limiting device is connected to the control input of the corresponding AC transistor through a chain of a series-connected differentiating chain, a diode and a blocking voltage driver.

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Claims (1)

SUMMARY OF THE INVENTION A stabilized rectifier comprising a inductor and a capacitor of a resonant voltage regulator connected in series between the first and second input terminals, the capacitor being connected through the rectifier to the output terminals, two transistor AC switches, the first power terminals of which are connected to the second input terminal, an auxiliary inductor, one output of which is connected to a common point of Dros1'5, a mudflow and a capacitor of a resonant voltage regulator, a phase-pulse control unit, with the main input of which is connected to the output terminals, the synchronization input is connected to the 2θ 'input of the rectifier, and the outputs are connected to the control inputs of transistor keys of alternating current, characterized in that, in order to reduce the volume, a current transformer with primary and two secondary windings is inserted into it , four diodes, two limiter amplifiers, two differentiating chains and two blocking voltage drivers, 20 with the primary winding of the current transformer connected between the other. the output of the auxiliary inductor and the combined second power terminals of the transistor switches for alternating current, the secondary windings of the trans35 current transformer are connected in series and their extreme terminals, respectively, are connected to the inputs of the limiter amplifiers through the first and second diodes, the output of each amplifier -40 limiter through its own chain formed from the series-connected differentiating circuit, diode and driver of the blocking voltage, connected to the control input of the corresponding transistor switch AC. 1423992 ’