SU43934A1 - Apparatus for producing periodic voltage oscillations - Google Patents

Description

The device according to the invention is intended to obtain periodic voltage oscillations having a sawtooth shape.

In FIG. 1 depicts the electrical circuit of the device; FIG. 2 — voltage curve received from this device; FIG. 3 is the oscillatory characteristic of the magnetron generator entering the device depending on the voltage at the anode.

The device consists of a magnetron oscillator, to the oscillatory circuit of which the anodic voltage is supplied through the resistance I, which is shunted to the cathode of capacity C (Fig. 1). With a certain selection of C and f, the voltage between points c and a will vary in time and have the form shown in FIG. 2

The oscillatory characteristic of the magnetron generator, depending on the voltage on the anode, has approximately the form shown in FIG. 3. With an increase in voltage at the anode, the current / O all the time until E becomes equal to 1. At this moment, oscillations occur in the circuit of the magnetron generator, and the anode current of the latter increases during a very short period of time to the value and continues to increase with increasing E. With Change (251)

E in the opposite direction, when the value of EZ. EI and / d / d, there is a breakdown of oscillations and a fall in the current in the same for a very short period of time (with a sufficiently small period of the circuit).

Capacity C (Fig. 1) is charged through the resistance R to a value (Fig. 2); at this moment oscillations occur and the anode current rises sharply; the capacitor C is discharged until the voltage drops on it until the oscillation fails, the anode current suddenly stops, and the capacitor C starts to charge again until it reaches the voltage EI, and then the discharge starts again and so on. d.

If the voltage E of the source feeding the anode of the magnetron is much greater than the discharge voltage EI and EI - E is small, we can assume. that capacity C charge occurs linearly with time; average current strength

Yeo -

zar

Where

P i: + E,

 2

If EI is E DS, then D. S gzar (YG) (YG),

where is the charge time

 & W C 1 - y - EU

discharge time

LE C

1a + “

g

 1a

I "-i-Ia 2

Tt

Yeo - EU

T

1a R

The period of oscillation of the circuit of the magnetron generator should be chosen much smaller than T - it is especially convenient and simple to have this circuit tuned to a wave of several decimeters.

The described device can serve, for example, for a proportional deflection of the cathode beam in an oscilloscope or in other cathode tubes, for example, in a cynoscope, an iconoscope, etc.

The subject matter of the invention.

An apparatus for producing periodic voltage oscillations having a sawtooth-shaped curve, characterized in that resistance is included in the anode power supply circuit of the magnetron generator, and capacitance is included between the supply point of the anode power supply wire to the circuit and the cathode of the magnetron.

. ffPff

fip 2

J

: C |,