SU107575A1 - Device for oscillator frequency stabilization - Google Patents

Description

The subject of the invention is a device for stabilizing the frequency of a pn generator using a quartz element, whose energy ntv is periodically replenished. Generators of this type, of which the replenishment of the energy of an oscillating quartz resonator occurs after a certain number of periods, are known and used in the manufacture of quartz time standards. Their main disadvantage is the difficulty of obtaining a small connection between the quartz element and the generator circuit. The presence of a large connection leads to a decrease in the frequency stability of the generator.

In the generator that is being massaged below, this drawback is eliminated by the fact that it uses an electron-optical energy converter for mechanical oscillations of a quartz element into the energy of electrical pulses used to maintain the oscillatory process in a circuit stabilized by this quartz element.

The drawing shows a block diagram of the proposed device. The light beam from the incandescent light bulb Jli hits the surface of the oscillating

quartz plate K, which is coated with a thin metal layer. Reflecting from this layer, the light reaches (a photoelectric element. An OH voltage occurs at the output of the photo element. An alternating voltage whose frequency corresponds to the oscillation frequency of the quartz plate is amplified by a high-frequency UHF amplifier and is applied to the frequency division stage D. In this kilo frequency the oscillation frequency decreases by 10-100 The transformed frequency voltage is limited with the help of the Ogr limiter in amplitude and fed to the shaping cascade of the forms. At the output of this cascade, pulses are obtained whose duration is 10-100 times Before the oscillation period of quartz, these pulses are applied through a coupling capacitor C to a low impedance resistor R that shunts quartz and periodically replenishes the loss energy of quartz. Due to the absence of a direct connection of the quartz to the generator circuit, which can be connected to the output of the high amplifier frequency, the load response to quartz decreases and the frequency stability of the generator increases.

Subject invention

A device for stabilizing the generator frequency using a quartz element, whose energy is replenished periodically, characterized in that, in order to reduce the connection of the quartz element to the generator circuit, an electron-optical energy converter for the mechanical oscillations of the quartz element to the energy of electrical pulses used to maintain the oscillatory process is used in the contour stabilized by this quartz element.