SU961113A1 - Versions of of method of shaping pulses by magnetic-thyristorized shaper - Google Patents

Description

(5) METHOD FOR PULSE GENERATION MAGNETIC. THIRISTOR GENERATOR (HIS-OPTIONS)

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- The invention relates to the generation of electrical oscillations and can be used as a method for generating pulse packets of increased temporal stability using magnetic thyristor generators.

One of the peculiarities of the magnetically thyristor generators is the presence of a time delay in the appearance of their Q and Q pulses at the generator output relative to the synchronization pulses, due to the formation processes in the magnetic links. Moreover, the time delay, and consequently, the time-to-stability of the output pulses, is not a constant value, but depends on the voltages applied to the switching throttle meters.

There is a method in which, in order to stabilize the pulse repetition frequency, the phase of the pulses at the output of the magnetic modulator is continuously compared with the phase of the reference pulses and, if a phase shift occurs, the phase is corrected in the first link of the modulator l.

However, the known method does not provide - high temporal stability of each individual output pulse.

A known method of generating pulses using magnetic thyristor generators consists in charging the storage capacitor from an unstabilized power source and then discharging it to a magnetic link while continuously switching the switching choke of the magnetic link with a pulsating current proportional to the voltage of the power source 2.

However, the known method does not provide high temporal stability of the output pulses, especially in burst-pulse operation, since it does not take into account such destabilizing factors as parasitic

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voltage leakage from the storage capacitor, a change in the initial magnetic state of the switching throttle due to a change in the amplitude of the generated pulses,

The purpose of the invention is to increase the temporal stability of the output pulses in a burst-pulse mode.

This goal is achieved by coordinating the method of generating pulses with a magnetically thyristor oscillator by charging the storage capacitor and then discharging it and biasing the switching chokes of the magnetic units with a pulsating current after the output pulse is formed Yes, the storage capacitor is measured at its voltage at a fixed constant point in time before the start of its discharge, then in a pause before the discharge of the condens Ator magnetizing switching Dros sat in the forward current direction about prrtsionalnym measured voltage.

The voltage on the storage capacitor is measured at the moment of its discharge and after charging at a fixed constant time until the beginning of the next discharge, then in the pause until the storage capacitor is discharged, the switching throttles in the opposite direction are proportional to the current proportional to the difference of the measured voltages .

The drawing shows a diagram of the device that implements the proposed method.

The device contains a power source 1, charge thyristor 2, storage capacitor 3, discharge thyristor k, linear choke 5 transformer 6, capacitor 7 ma | - link, switching choke 8 of the magnetic link, load 9, synchronizer 10, measuring device 11, pulse bias device 12.

In the first embodiment, the device operates as follows.

After the formation of the previous pulse in the load 9 is completed, the pulse bias device 12 generates a current pulse from the signal from the synchronizer 10

ry reversal of the choke 8 in the opposite direction to saturation. Moreover, the duration of the magnetization reversal process is chosen in such a way that it would end no later than the start of the next charge of the capacitor 3. After charging the capacitor 3, the device 11 at a fixed constant moment of time before the beginning of the next discharge of the capacitor measures its value In addition to a signal from the synchronizer 10, the pulsed bias device 12 produces a current pulse proportional to the voltage measured, which bias the choke 8 in the forward direction. Moreover, the duration of this impulse is chosen so that the magnetization process is completed before the next discharge of the capacitor,

So, by reverse reversal of the switching chokes to saturation, a zero setting and a magnetic state are produced, thereby eliminating the influence of the previous pulse. Then, by measuring the voltage on the storage capacitor at a fixed constant point in time before it is discharged and biasing the switching chokes with a current proportional to the measured voltage, the initial magnetic state of the chokes is determined depending on the voltage, which will then be applied to it.

In the second variant, at the moment when the discharge of the capacitor 3 ends, the device 11 measures the value of the residual voltage on it. Next, the capacitor 3 is charged, and at a fixed constant moment of time until the beginning of the next discharge, the device 11 measures the voltage on it, and then, using the signal from the synchronizer 10, the device 12 pulses the magnetic bias and produces a current pulse proportional to the difference voltage, which magnetizes the choke 8 in the opposite direction, P, the duration of this pulse is chosen such that the process of magnetization ends before the next discharge of the capacitor 3,

So, by measuring the residual voltage on the capacitor after its discharge, the residual

Claims (2)

Claim 1 . A method of generating pulses by a thyristor-magnetic generator by charging a storage capacitor ₃₅ with its subsequent discharge and magnetizing the switching chokes of the magnetic links with a pulsating current, characterized in that. what, 961113 6 in order to increase the temporal stability of the output pulses during burst-pulse operation, after the output pulse is formed, the switching chokes are magnetized to magnetize in the opposite direction, and after charging the storage capacitor, the voltage across it is measured at a fixed constant point in time before it starts to discharge, then in a pause to the discharge of the capacitor bias the switching inductors in the forward direction by a current proportional to the measured voltage. 2. A method of generating pulses by a thyristor-magnetic generator by charging a storage capacitor with its subsequent discharge and magnetizing the switching chokes of the magnetic links with a pulsating current, characterized in that the voltage across the storage capacitor is measured at the end of its discharge and after charging at a fixed time until the start of the next discharge , then in the pause before the discharge of the storage capacitor, the switching inductors are magnetized in the reverse direction by a current proportional to the difference hereditary stresses.