SU847489A1 - Magnetic nanosecond-duration square-wave generator - Google Patents

Description

(54) MAGNETIC GENERATOR OF RECTANGULAR PULSES OF NANOSECOND DURATION

I

The invention relates to a pulse technique, in particular, to a technique for generating high-power square nanosecond pulses. These generators are used for pulsed powering electron guns of accelerators, magnetrons, traveling-wave tubes, high-power lasers, etc.

Known magnetic generators are pr-j nano-square coal pulses containing a magneto-thyristor generator with a compression output link, two segments of transmission lines with ferrite with resistors at the ends, from-, 5 cutting transmission lines: constant parameters, the ends of which are connected to the free ends of the transmission lines with ferrite, several fl.2 chokes

The disadvantage of these generators is the low efficiency in the formation of short pulses, in addition there is a distortion of the pulse shape.

The closest technical solution to the present invention is a generator, which contains a magnetic generator of rectangular pulses, an output segment of a ferrite transmission line, and a resistor. A short-circuited line segment forms a shorter rectangular pulse G2 from a relatively long rectangular impulse coming from a line.

The disadvantages of the known technical solution are low efficiency, due to the reflection of part of the energy of the original rectangular pulse and the limitation of the minimum pulse duration, since it uses only a fraction of the duration of the original pulse.

The purpose of the invention is to increase the efficiency and reduce the pulse duration.

Claims (2)

The goal is achieved by the fact that in a magnetic generator of rectangular pulses of nanosecond duration, containing a magnetic generator, an output segment of a ferrite line and a resistor, between the output segment of a ferrite transmission line and a resistor are installed several series-connected ferrite lines with wave impedance for a shock front each subsequent line, equal to the wave resistance of the previous one in the saturation condition of farrite, and the time of the wave motion to the output end of the line and about equal to the duration of the pulse applied to its input. The drawing shows a diagram of the generator. The generator contains a magnetic generator 1 of rectangular pulses, containing an output segment of the ferrite line 2 of the transmission, connected in series to its output are connected segments of ferrite lines 3 and 4, a resistor 5 connected to the w of the last line. Segments of ferrite lines may be several. The wave resistance for the shock wave front in each subsequent line coincides with the wave resistance of the previous one with saturated ferrite; the ferrite is equal to the resistance of the resistor 5. The generator operates as follows. The ferrite line has two characteristic states, the first of which is a state with a saturated ferrite, when the wave propagation velocity in it is VQ, the characteristic impedance is PQ, and the connection between current and voltage is described by the expression. The second state, when the wave travels along the line as a shock with the magnetization reversal of the ferrite, then the wave velocity paBHaVyz y is the wave impedance defined as | the waves. The operation of the generator for the case where the line 3 is connected to the resistor 5, and there are no subsequent lines, occurs as follows. In line 3 slowly, without distortion, with a speed Vy comes a pulse of intensity f c, with a powerful t. If the delay time of line 3 with saturated ferrite is such,. the discharge wave returns from the load to the junction of the line at the moment when the impulse from the line 2. The wave of discharge in line 2 almost does not go, since the ferrite of line 2 is in an unsaturated state. Consequently, line 3 is discharged to resistor 5 as a linear charge tT .. -l. Ini for time T ayyy /). with power PrUo n The reduction of the duration of a rectangular pulse occurs in Kf times, fu whereK. the growth of pulsed -Pa i + t2: power by Kp times where d.t.PG Since, as a rule, D 1 ,,, the compression of rectangular pulses is effective. The number of lines is determined by the necessary total pulse reduction factor I nr T - Cn. As shown by experimental studies, the energy transfer rate of the pulses is 73% due to an increase in the efficiency with a decrease in the pulse duration. Invention Magnetic nanosecond square impulse generator comprising magnetism | 1st generator, output ferrite line and resistor, characterized in that, in order to increase efficiency and decrease impulse duration, several series connected ferrite shower and resistor are installed ferrite lines with an impedance for the shock front in the subsequent line equal to the previous impedance in the nano state yen ferrite, and the time of movement of the wave to the output end 58474896 line and back equal to the duration1. USSR author's certificate incoming pulse at its input. 508914, cl. H 03 K 4/00, 1977. Sources and Formulas, 2. Instrumentation and Experimental Technique taken into account in the examination number 3, 1976. YAYAJ g RRRRO-i