RU1774461C - Device for suppression of residual oscillations in resonance circuit - Google Patents

Abstract

The invention relates to radio engineering and can be used to suppress residual oscillations in a transmitter antenna. An object of the invention is to increase the < RTI ID = 0.0 > [Gtc] | The device for suppressing residual vibrations in the resonant circuit comprises a signal source 1, a serial circuit 2. ballast resistor 3, diode bridge 4, resistor 5, capacitor 6, two-terminal 7, having an S-shaped current-voltage characteristic, the first and second additional resistors 8, 9, an additional capacitor 10, thyristor 11. An additional capacitor 10, charging through a resistor 5, creates an additional delay, which allows the two-terminal 7 to turn on later and turn the thyristor 11 into open state, which allows is more reliably suppress the residual vibration when no signal at the output of the source 1. 2 yl. w ё VI XI Ј O GO

Description

The invention relates to the field of radio engineering and can be used in measuring systems and is an improvement of the invention by ed. testimonial. No. 1709539.

An object of the invention is to increase the suppression of residual oscillations.

In FIG. 1 is a circuit diagram of an apparatus for suppressing residual vibrations in a resonant circuit; in FIG. 2 a, b, c-diagrams of work.

The device for suppressing residual oscillations in the resonant circuit contains (Fig. 1) a signal source 1, a serial circuit 2, a ballast resistor 3, a diode bridge A, a resistor 5, a capacitor 6, a two-terminal device 7 having an S-shaped current-voltage characteristic, the first and the second additional resistors 8, 9, an additional capacitor 10, a thyristor 11. A device for suppressing residual oscillations in the resonant circuit operates as follows.

The source 1 forms the envelope 2 of the radio pulse with the envelope shown in FIG. 2a.

As a result of the operation of the diode bridge 4 during the working part of the radio pulse, the capacitor 6 is charged to a certain voltage level and from the moment 12 (Fig. 26). when the amplitude of the high-frequency oscillations in the antenna reaches the appropriate level, the diode bridge 4 closes and the oscillations decay rapidly, and at time taj (Fig. 26), when the voltage at the additional capacitor 10 reaches the unlock threshold of the two-terminal 12, the thyristor 11 closes the circuit leakage of the capacitor 6, which ensures that the charge is removed from it by the beginning of the next duty cycle. The ballast resistor 3 is shunted by the diode bridge b and the capacitor 7. During the working part of the radio pulse, the voltage on the capacitor 7 reaches a value that locks the diode bridge, which leads to the inclusion of a ballast resistor 3 in series circuit 2 and accelerated damping of oscillations, At the time of maximum

The voltage across the capacitor 6 unlocks the thyristor 11 and current flows through the second additional resistor 9.

The process of suppressing residual vibrations corresponding to the locking interval of the diode bridge 4 does not last during the tsrta interval (Fig. Sv) as in the prototype, but much longer during the interval (Fig. 2c), which provides an increase in the suppression of residual vibrations.

The additional capacitor 10, charging through the resistor 5, creates an additional delay, which allows the two-terminal 7 to turn on later and turn the thyristor 11 open, which allows more reliable suppression of residual oscillations in the absence of a signal at the output of source 1.

Claims (1)

The claims A device for suppressing residual oscillations about a resonant circuit according to ed. St. No. 1709539, characterized in that, in order to increase the suppression of residual oscillations, in the first chain in series with a resistor and a two-terminal having an S-shaped current-voltage characteristic, the first and second additional resistors are connected in series, as well as a thyristor and an additional capacitor, the first output of which is connected to the junction point of the massacre of the mountain and the two-terminal, having an S-shaped current-voltage characteristic, while the thyristor anode is connected to the resistor terminal, which is connected to one of the diagonal terminals of the diode bridge with the diodes of the same name, the thyristor cathode is connected to the connection point of one of the terminals of the first additional / fb0 resistor and the first terminal of the second additional resistor, the thyristor control electrode is connected to the two-terminal connection point having an S-shaped current-voltage characteristic, and 5 of the first additional resistor, and the second terminal of the additional capacitor is connected to the second terminal of the second additional resistor. H.