SU55407A1 - Tube generator - Google Patents

Description

With push-pull circuits, the conditions for eliminating reverse reactions are discussed below in the circuit shown in FIG. 2. Here Zci and ZHJ, as well as Z 2, are the impedants included in the corresponding grid and filament lamps 1 and 2. Cyvj and LNI, as well as C and LN- are the capacitance of the neutrodin chains of the lamps 7 and 2. Intra-electrode capacitances and self-induction of the lamp leads are supplied with appropriate indices: Za is the impedance of the anode circuit of the generator, E is the voltage on this circuit, Eg-, the voltage of the independent excitation. The reverse reactions will be absent if the following three conditions are simultaneously satisfied (in the presence of a voltage E on the circuit Za and in the absence of an excitation voltage Eg); 1) the voltage between the grid and the thread of the first lamp (i.e., on the grid of the first lamp) is zero; ; 2) the voltage between the grid and the thread of the second lamp (i.e., on the grid of the second lamp) is zero; . 3). The voltage between the points to which the exciter is connected, the voltage Eg, is zero. , To satisfy the range, it is necessary that these conditions are not dependent on the wave. Let us take the case when the impedances Zci, Ze, ZHI, ZHZ are represented by additional self-inductions I I f t LC 2 I 1 I 2. . We denote the current flowing in the branch, in which Cyv2 lies through / j, in the branch "in which it is located - through / 3 and in the middle branch - through /,. Then the first condition will be satisfied, if If, however, the third condition is also satisfied, then / i is obvious (ω LCI -f 0 Lci} / 2 (ı i ≤ i ω Ln /) IDN;;:, + 1n i ≤ l + LHI Thus: LC, + L ,, i «i + /. - Д2 Ь LHZ- -LH In addition, it is obvious that the condition M should be satisfied at the same time M. -r- + H - + - + 11 + e) H or, taking into account the condition of independence from the wave li, CNI -J- and -f, - 2 baci in + in + iafl + J) Vdc1 / On the other hand, A 3Cac2 J.2 + i «+ ia (l +.) Thus, CNJ CNJ Coci Cses If the obtained five ratios are satisfied, then the tasks set are absent, no response, range, and notion Yeni possible excitation of parasitic vibrations are resolved. The effect of CNI, СН2, as well as self-induction Z, NI, and Lv, described by equations (3), (4) and (5), is known and is not understood by us. Meanwhile, the action of the cuz, ci,, (iw / and a) /, u2 impedants. described by equations (1) and (2), has not yet been analyzed and is new. Thanks to them, the equipotentiality of the points to which the capacitances CCHI and Csnch are connected is reached, due to the lack of reaction voltage on the grid-thread gap. Due to the fact that, thanks to these same impedants, a pavement is being created, the shoulders are

capacitances CM, San, as well as self-induction of leads with Lc - {- Lc, Z. "- | -Z," impedants turned on, and the intraelectrode capacitance Ce, enters the diagonal of this bridge, then naturally any two-stroke parasitic oscillations that could occur in these chains, with this circuit will not be able to be excited.

It should, however, be noted that when replacing a lamp with an equivalent circuit 2, we make a well-known simplification, namely: the capacitance Cac, Cl and Sen and self-induction of L and LC is gots

not concentrated capacitances and self-inductions, as depicted. | in fig. 2, and distributed, possessing also resistances. Therefore, the correct neutralization formulas will be more complicated than the formulas derived above. However, it is practically quite sufficient to carry out neutralization with the use of simple impedants (self-inductions). If it were required in special cases, then in the process of tuning one would easily find such values of the impedants Zci, Zcz, ZHI and ZK2 (a combination of self-induction, capacitance and resistance).

to fulfill the above three conditions. It should be borne in mind that CN and LN can be constructively implemented either in the form of distributed capacitances and self-inductions, or from some combinations of capacitances and self-inductions ensuring the equipotentiality of the attachment points of excitatory e. d.

subject matter of the invention.

A tube generator with independent excitation, characterized in that, in order to eliminate the reverse effects of the amplifier stage on the exciting and reduce the possibility of parasitic oscillations, such impedances are incorporated into the cathode circuit or the grid circuit, or both. pairs of equipotential points, for example, so that when excited from the anode circuit side, zero voltages are obtained between; grid and cathode and at those points to which the excitation voltage is applied. to the author's certificate of evidence G. No. 55407 A. Zeytlenok

/ u-0,

g:

,,

J-Hh-- G;

b -.

Ii .--, -j,.

/ O: o /:

-M -.,

46 D I T .. / ;. L.- .: “.

/ ,, § hell ,,

1, .0, -o

Tx / o / o

a: H t fftv

.- ,, -O -CHf - - f

 . : tHb -. /. ,,., .r.

-aw

f 1

he-hh-j b

,

H (

h f}

2

rCvi

7-,

/ - / :,