SU24007A1 - Cathode generator - Google Patents

Description

The most significant disadvantages of high frequency cathode generators are: the inability to obtain a large wavelength range without changing parts, the inability to obtain the constancy of the variation voltage in different parts of the range, and the inability to obtain the same wave stability in different parts of the range. anode voltage and voltage. The present invention aims at eliminating the aforementioned disadvantages and consists in the constructive implementation of a high-frequency cathode generator, which does not have. replaceable parts and giving the same alternating voltage at different frequencies. In the generator, the change in capacitance and self-induction is carried out simultaneously in a manner already known, I

The drawing shows a generator circuit in which a wide range is achieved with the help of mechanically interconnected variable capacitors Ci and Cj and a variometer Lt shunting capacitors; during the rotation of the capacitors (simultaneously with the variometer), both self-induction and capacitance increase, and a change in wavelength of approximately 8–8.5 times can be achieved. In addition, due to the inclusion of the generator according to the three-point scheme, simultaneous change in the capacitances Ct and Cj and self-induction L, a certain correspondence is obtained between the value of the inverse

connection and attenuation of the circuit over the entire range, which ensures uniform oscillation voltage also over the entire range.

In order to achieve the most rational generator mode depending on the given conditions (loop attenuation, lamp type, generator load, etc.), capacitors C and Cj may not be equal. The need for capacitive feedback in the generator is caused by the impossibility of obtaining a correspondence between the magnitude of the feedback and the attenuation of the circuit using the feedback by magnetic flux, transformer, autotransformer, due to the change in the magnitude of the feedback when the frequency is caused by the partial mutual destruction of the magnetic instead of the variometer .

In the case of using a generator for radio receivers with heterodyne reception, it is possible to easily perform optimal detection over the entire range for which, as is known, it is necessary that the detector lamp receive a certain voltage from the local oscillator. This voltage is transmitted by means of the coil ij, inductively coupled to the variometer, and its magnitude is obvious from the formula E.

At the beginning of the range, i.e. with the greatest w, the self-induction of the mobile and fixed part of the variometer create oppositely directed aegatives

FIELD and BLaimo induction M with Z.- coil is minimal. With a decrease in l: e sh, mutual, moniduction m increases n with an appropriate and consistent selection of connection winds, it is possible to obtain independence of the voltage from | frequencies throughout the range.j

The advantage of the proposed invention in front of the previously known premiere generator circuits is, i poivie, more uniform wave stability over the entire range.

Subject of a f te p a The cathode generator has h, and: t :.;. without cj.ieHHb.x parts with s.chnvrs :. .. :::; ka.makeineem of capacities and sgl: Oi ;; d ki giving a uniform nergl; skno;., 1; p; r; kenke, otshnch p: iisp so that variable capacitors are changed in r-y up; C, and. included on three points:; -:. 1Y cxe: .ic giu. tirovannye. with the variometer Lf, the axis 1p; .1gs, what is the condensatorosis and varismetc are mechanically interconnected.