RU151748U1 - NETWORK OF CONTROL PULSES SYNCHRONIZED WITH THE NETWORK - Google Patents

Abstract

1. Shaper of control pulses synchronized with the network, which includes a driving generator of rectangular pulses, a pulse shaper, characterized in that the driving generator of rectangular pulses is made in the form of a comparator, and the pulse shaper contains shapers of the leading edge of the negative and positive half waves. 2. Shaper according to claim 1, characterized in that the comparator is made on an operational amplifier. 3. The shaper according to claim 1, characterized in that each of the front-edge shapers of the negative and positive half-waves contains an integrator, adder, and integrated logic elements.

Description

The utility model relates to the field of electrical engineering, in particular to devices for converting parameters of electrical energy, and can be used to create secondary power sources.

There are various solutions of circuitry sources of secondary power supply, for example:

- "Switching voltage stabilizer" (a USSR No. 851370, MPK-3 G05F 1/56, H02M 3/335, BV-28-81 p.);

- "Pulsed constant voltage stabilizer" (USSR No. 1067486, MPK-3 G05F 1/56, Bi 2-84 p.);

- "Switching voltage stabilizer" (Patent of Ukraine No. 54292 A, MPK-7 G05F 10 1/56, bull. No. 2, 2003).

A disadvantage of the known devices is their complex circuitry.

The closest in technical essence and the result that is achieved, and selected as a prototype is a "Device control pulse stabilizer" (Patent of Ukraine No. 63727 A, IPC - 7 G05F 1/56, H02M 3/335, H02M 7/00, bull. No. 1, 2004), containing the master oscillator, made in the form of a functional generator, including a triangular pulse generator, implemented according to an integrator circuit, and a rectangular pulse generator synchronized with it, implemented according to a comparator circuit, a pulse shaper, including a trigger and a matching circuit, feedback converter, feedback converter made on a comparator, the inverse input of which is connected to the output of the triangular pulse generator, and the direct input is connected through the switch to the mains voltage or to the output of the feedback voltage rectifier, including a diode bridge, a choke and a smoothing capacitor, and the output the comparator is connected to the first inputs of the logical elements of the matching circuit, the second inputs of which receive the control voltage from the output of the current protection unit, the moves of the logic elements of the match circuit through the switch are connected to the parametric stabilizer, and the third inputs of the logic elements of the match circuit are connected to the output of the trigger of the pulse shaper, and the outputs of the logic elements of the match circuit are connected to the inputs of the preliminary amplifier of the pulse stabilizer.

The disadvantage of the prototype is its complex circuitry.

The objective of the utility model is to develop new circuitry for a control pulse generator synchronized with the network to achieve a technical result - simplifying the device and increasing the reliability of operation.

The task is carried out by the fact that in the "Shapers of control pulses synchronized with the network", which includes a square-wave pulse generator, a pulse shaper, which sets a square-wave generator, is made in the form of a comparator, and the pulse shaper contains negative and positive half-wave front shapers, in addition, the comparator is made on an operational amplifier, and each of the front-edge formers of the negative and positive half-wave contains an integrator, adder and int This roll of logic elements.

The essential features of the device, claimed to coincide with the prototype, are the following features:

- The master generator of rectangular pulses;

- Pulse former.

Distinctive features of the prototype, the essential features of the device are claimed to be the following features:

- The master pulse generator is made in the form of a comparator;

- the pulse shaper contains the front edge shapers of the negative and positive half-waves. Private distinctive from the prototype of the essential features of the device is claimed to be the following features:

- The comparator is made on an operational amplifier;

- Each of the front-edge formers of the negative and positive half-wave contains an integrator, adder, and integrated logic elements.

Between the essential features of the utility model of the claimed and the technical result, which is achieved, there is the following causal relationship.

Indeed, the new circuitry of the proposed device in comparison with the prototype can significantly simplify the device and, due to this, increase the reliability of its work and reduce material costs when replicating this device.

The analysis of the prior art by the applicant, including a search by patent and scientific and technical sources of information, with the identification of sources containing information about analogues of the technical solution of the claimed, allows us to establish that the applicant has not found complete analogues that are characterized by the totality of signs identical to all the essential features of the claimed device, specified in the utility model formula.

Therefore, it can be argued that the utility model, it is claimed, meets the condition of patentability by the criterion of "novelty."

In addition, this utility model is industrially applicable, since the technical solution, it is claimed, can be used in the development and manufacture of secondary power sources.

To hell, a circuit diagram of the inventive device is depicted. The driver of the control pulses synchronized with the network, including the master rectangular pulse generator, the pulse driver, while the master rectangular pulse generator is made in the form of a comparator, and the pulse driver contains the leading edge formers of the negative and positive half-waves.

In addition, the comparator is made on an operational amplifier, and each of the front-edge formers of the negative and positive half-wave contains an integrator, adder, and integrated logic elements.

The mains voltage is supplied to the input of the claimed device.

On the elements C1, C2, C3; VD1-VD4, VD5 assembled transformerless symmetrical power source, resistors R3, R4 are designed to create an artificial mid-point of the power source.

On the elements R1, R2, VD6, VD7 assembled two-way mains voltage limiter. The mains voltage from the output of a transformerless symmetrical power source is supplied to a level limiter made on diodes VD6, VD7 and, due to a direct voltage drop on these diodes, is limited to a level of 0.7 V.

This voltage - 0.7 V - is applied to the inputs of the operational amplifier DA1, which is turned on in comparator mode, which turns the voltage 0.7 V into a rectangular voltage, - a meander - without phase shift of the initial voltage.

The comparator on DA1 is turned on in inverse mode, so its output voltage is inverse to the initial (mains) voltage.

For galvanic isolation from the network, the circuit of the device claimed contains a ZOT101B optocoupler, while the composite transistor of the optocoupler inverts a rectangular voltage and now it coincides in phase with the sinusoidal voltage of the AC network. For triacs installed in the load soft start circuit, the best option for controlling the cutoff angle is controlling short pulses of> 5 μs and it is desirable that the positive half-wave be positive pulses and the negative half-wave should be negative pulses.

On the DD1 and DD2 microcircuits, the leading edge shapers of negative (DD1) and positive half-wave (DD2) are assembled.

DD1-1 generates and inverts the pulses after the composite transistor of the optocoupler. DD2-1 inverts. The selection of the leading edge of the negative half-wave is performed on DD1-2 and DD1-3, which form the circuit of the first one-shot, while the delay line is assembled on the elements R23 and C4, and the DD1-3 element acts as the first adder - the sum of the direct and delayed inverse algebras is the front front of the input negative impulse.

The leading edge of the positive half-wave is extracted on DD2-2 and DD2-3, which form the circuit of the second one-shot, while the delay line is assembled on the elements R23 and C4, and the DD2-3 element acts as the second adder - the sum of the direct and delayed inverse algebras is the front front of the positive input pulse.

Elements inverting DD1-4, DD2-4 highlighted leading edge.

Based on the foregoing, we can conclude that the task posed in this utility model, the development of a new circuitry of a control pulse generator synchronized with the network, is accomplished with the achievement of a technical result - simplification of the circuitry of the device.

Claims (3)

1. Shaper of control pulses synchronized with the network, which includes a clock generator of rectangular pulses, a pulse shaper, characterized in that the clock generator of rectangular pulses is made in the form of a comparator, and the pulse shaper contains the front edge shapers of the negative and positive half-waves. 2. The shaper according to claim 1, characterized in that the comparator is made on an operational amplifier. 3. The shaper according to claim 1, characterized in that each of the front-edge shapers of the negative and positive half-waves contains an integrator, adder, and integrated logic elements.

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