SU72384A1 - Device for stabilizing the lamp generator - Google Patents

Description

The subject of the invention is a device for stabilizing a lamp generator having a smooth frequency range. Stabilization is achieved by using a jet lamp acting as a result of the beats of the frequencies of the main stabilized and auxiliary stabilizing generators.

The difference of the proposed device lies in the fact that the discriminator is replaced by a jet lamp, to which the rectified voltage is applied from a low-frequency amplifier, to the input of which the beat frequency is fed.

The scheme and characteristics of the operation of the device are shown in FIG. 1, 2 and 3.

A fluorescent lamp 6 is connected to the circuit of the high-frequency lamp generator 7 with a smooth frequency range (Fig. I), controlled by the voltage coming from the rectifier 5, the output of which is connected in series with the bias source 7 (Eg).

The rectifier is supplied with an audio voltage from a low-frequency amplifier 4, which has a frequency response similar to that shown in FIG. 2

To the input of the low-frequency amplifier, a low-frequency voltage is applied from the mixer 3, resulting from the beating of the frequencies of the generator 7 and the source of the setting frequency 2.

When the circuit operates, the frequency of the stabilizing generator is different from the master frequency by a small amount L /. The magnitude A / by the selection of the magnitude of the displacement is set such that the operating point lies approximately in the middle of the left portion of the characteristic (Fig. 2). Then going off to either side of the frequency generator of the smooth range will be combined; the jet lamp is located in the widest possible range.

The switching circuit of the jet lamp must be such that an increase in the rectified voltage causes a decrease in the frequency of the generator 7, and vice versa (Fig. 3).

If in the generator switching on generator its frequency will be higher than the setting one by value, then the generator frequency will be lost and will again be equal to /.

To clarify this, consider

221

the frequency response of the low frequency amplifier 4, together with the curve in FIG. 3

At the moment of switching on, the rectified voltage will increase and at the same time, according to the curve of FIG. 3, the frequency of the generator will decrease, and hence the frequency of the beats. This causes a further increase in rectified voltage and a decrease in frequency.

As a result, inhibition occurs and the operating point automatically shifts to the left side of the frequency response.

Subject invention

A device for stabilizing a lamp generator with a smooth frequency range using a jet lamp, acting from the beats of the frequencies of the stabilized and stabilizing generators, characterized in that the jet lamp is supplied with the rectified voltage of the low frequency amplifier, to the input of which the beat frequency voltage of the jet lamp due to the indirectness of the frequency response of the low frequency path.

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FIG. 3

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