SU1241407A1 - Shock-excited crystal oscillator - Google Patents

Abstract

The invention relates to radio engineering and m. B, used as a source of highly stable al. fluctuations. Swing time is reduced. The device contains a shock pulse shaper 1, a differential transformer 2, a neutral-to-E-capacitor 3, a three-electrode quartz resonator (TCR) 4, a control key. 5, the amplifier 6 and the parallel LC circuit 7. Under the action of a shock pulse, the TCR 4 operates in a continuous oscillation mode. Due to the antiphase of the oscillations, the oscillations of the TCRs 4 are quenched. A parallel LC circuit 7 tuned to the frequency of the TCRs 4 serves to filter out harmonic and anharmonic oscillations of the TCRs 4 when excited by a shock pulse. The goal is achieved by the introduction of a parallel LC circuit 7 and the implementation of TCR 4. 1 Il. (L

Description

This invention relates to radio engineering and can be used as a source of highly stable electrical oscillations.

The purpose of the invention is to reduce the oscillation time and increase its stability.

The drawing shows a structural electrical circuit of a quartz oscillator of shock oscillations.

The quartz percussion excitation generator contains a shock pulse driver 1, a differential transformer 2, a neutralizing capacitor 3, a three-electrode crystal resonator 4, a control switch 5, an amplifier 6, a parallel LC circuit 7, and the control key 5 has a terminal 85 driver 1 - a terminal 9, and amplifier 6 - terminal 10.

The quartz shock excitation generator works as follows.

When a starting pulse is applied, the shaper 1 generates a shock pulse (video or radio pulse, depending on the frequency of the triple-excitation. Native quartz resonator 4). The shock pulse through the differential transformer 2 shock excites oscillations in the three-electrode quartz resonator 4. The oscillations from the three-electrode quartz resonator 4 are amplified by the amplifier 6. At the moment of excitation of the three-electrode quartz resonator 4, the control key 5 is closed. When a control pulse arrives at the control switch 5, the moment of arrival of which determines the beginning of oscillation damping, the control switch 5 opens, as a result of which the second (common) electrode of the three-electrode quartz resonator 4 is connected to the third electrode. A three-electrode quartz resonator 4 at such switching on operates at a frequency j close to the frequency with the control key closed 5, and the oscillation phase is antiphase to the original oscillations. Due to the antiphase of the oscillations, the oscillations of the three-electrode quartz resonator 4 are quenched, since under the action of the shock pulse the three-electrode quartz resonator 4 operates in the mode of non-damping oscillations. Anti-phase voltage oscillation frequency

Order 3610/52 Edition 816

Production polygr..pr-tie, Uzhgorod, st. Project, 4

816

using acoustic coupling between the first and third electrodes of a three-electrode quartz resonator 4. Parallel oscillating

The LC circuit is tuned to the frequency of a three-electrode quartz resonator 4 and serves for the filtering of harmonic and anharmonic oscillations of a three-electrode quartz resonator 4

when excited by its shock pulse. Due to the absence of a phasing element that is filled with reactive elements in the negative feedback circuit, the stability of the oscillation damping time during operation (storage) and in the range of operating temperatures is improved. TatxDiepaTypHbie and long-term frequency departures of the resonator operating on common-mode and anti-phase oscillations (i.e., when the control key 5 is off and on) are correlated in absolute value and in sign, which ensures the stability of the quenching time.

Claims (1)

The invention is a quartz percussion excitation / value generator, containing a shock pulse shaper, a differential transformer, the primary winding of which is connected to the output of the shock pulse formation, midpoint the secondary winding of which is connected to a common bus, a quartz resonator, the first output of which is connected to the first output of the secondary winding of a differential transformer, which neutralizes the capacitor. which is connected between the second output of the secondary winding of the differential transformer and the second electrode of the quartz resonator, the amplifier whose input connected to the second stage of the quartz resonator, and a controllable key, characterized in that, in order to reduce the oscillation damping time and increase its stability, a parallel LC coax which is included between the amplifier input and the common bus is inserted into the crystal three-electrode, with a controlled key included between the second third-electrode three-crystal quartz resonator. Subscription