SU615801A1 - Pulse generator - Google Patents

Description

The invention relates to radio engineering and can be used to power semiconductor lasers and LEDs. A pulse generator is known that contains a coaxial forming transmission line with a movable segment of the inner core located between two fixed segments, one of which is connected to a power source and the other with a load, and a dielectric tube-shaped. 1. I However, there is no matching of wave impedances of individual (sections of the coacryline. The purpose of the invention is to increase the amplitude of the current pulse. For this purpose, in the proposed generator of impulses on both sides of the tubes In addition, the conductive coating is removed up to the tube at the points of contact of the movable segment of the inner core with the fixed segments. The drawing shows the design of the pulse generator. The pulse generator contains a forming coaxial transmission line 1 with a movable segment 2 of the inner core located between two fixed segments 3, one of which is connected to the power source and the other with the load 4, and a dielectric filling in the form of a tube 5. On both sides t logging applied conductive, such as silvery coating. In addition, at the points of contact of the movable segment 2 of the inner core with the fixed segments 3, the coating is removed down to the tube 5. The pulse generator works as follows. The stationary segment 2 of the inner core freely moves under the action of the alternating magnetic field of the solenoids 6, alternately touching the ends of the left and right fixed segments 3 of the inner core. When touched to the right fixed segment 3 of the inner core, the distributed capacity of the movable segment 2 is charged from a constant voltage source, and when touched to the left fixed segment 3, the discharge is applied to the load 4. The proposed generator uses a silver-plated 50% ferroelectric tube, an outer diameter of 5 mm and an internal diameter of 4 mm with an ei 8000 that fits inside the copper tube. The length of the movable segment is 10 mm. Current pulses with a duration of 5 n and an amplitude of 100 A were obtained at a load resistance of 0.15 Ω under a supply voltage of 160 V.

The silver-plated ferroceramic tube makes it possible to lower the wave impedance and match the wave impedances of all sections of the coaxial line.

The use of the proposed pulse generator makes it possible to directly match the output impedance of the generator with the resistance of injection lasers and LEDs, to obtain current pulses with a duration of several nanoseconds and an amplitude of up to hundreds of amperes at a relatively low supply voltage.

Thus, the generator can be used to power injection lasers and LEDs and to measure the transient characteristics of photodetectors.

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Claims (2)

1. A pulse generator comprising a forming coaxial transmission line with a movable segment of the inner core located between two fixed segments, one of which is connected to a power source, and the other with a load, and a dielectric tube-shaped die. an increase in the amplitude of the current pulse, on both sides of the tube there is a conductive, for example silver, coating. 2. The pulse generator according to claim 1, characterized in that at the points of contact of the movable segment of the inner core with the stationary segments, the conductive coating is removed up to tr. A source of information, accepted into account in the examination: 1. Copyright certificate USSR № 126919, cl. H 03 K 3/45, 1969. / . . ..... o o 5