SU25978A1 - Cathode generator - Google Patents

Description

When receiving electromagnetic oscillations in cathode generators, transformer or autotransformer feedback is usually used. There are also circuits in which the dinatron effect is used, however, these circuits have not gained popularity due to the fact that it is more profitable to work with three-electrode lamps in normal mode.

Obtaining vibrations using a transformer or autotransformer connection is inconvenient in that the circuit, S which oscillates, should be included in any pattern of a quadrupole, then connected at its ends to a lamp circuit, also made in the form of a powered quadrupole. This creates some inconvenience, especially when it is desirable to have a generator that allows simple switching to cover a large frequency range.

In the proposed cathode generator, the circuit of which is shown in the drawing, to obtain oscillations of the desired frequency, an oscillating circuit LC tuned to this frequency is connected at its two ends to a lamp circuit made double-ended.

This circuit is a lamp amplifier with resistances containing an even number of lamps (in the simplest case, two) and having the ability to amplify in a wide frequency range (it is possible to implement an amplifier that works normally, as instructed by the author, as an exciter of oscillations according to the proposed scheme 400 m. The anode of the last lamp of the amplifier is discharged to the anode battery through the load resistance Ra and is connected to the grid of the first lamp through a large watt resistance.

The specified oscillating circuit. With attached on the one hand to the input ab of the amplifier, and on the other through a series-connected large watt resistance A to the output circuit cd of the same amplifier.

As already noted, the amplifier on the resistances can have only two lamps (a similar circuit is shown in the drawing), with the first of them being taken with a small internal resistance, and the second with a shielded anode. In proper places it is necessary to turn on separation capacitors of large capacity.

The subject matter of the invention.

1, a cathode generator, characterized in that an oscillating circuit LC, determining the oscillation frequency, is connected on the one hand to the input resimets ab of an impedance amplifier containing an even number of lamps, and on the other hand through a large watt connected in series

resistance R to the output circuit of the same amplifier cd, which can be shunted by the load resistance Ra.

2. The form of the generator according to item 1, consists in that the amplifier with resistances has two lamps, of which the first one has a low internal resistance, and the second lamp has a shielded anode.

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