SU48599A1 - Device for correcting frequency response - Google Patents

Description

Obtaining a frequency response with the rise of a certain portion and a certain degree of decay of the frequency response in low frequency amplifiers is usually achieved by applying an anode lamp load containing a loop and a series-connected resistance.

By connecting two such elements in series, one can lift two | plot frequency response. Such correction methods give a small j lamp usage, as an amplifying element. The greatest gain of the cascade | for the frequency to which the loop is tuned, will, in the limit, be equal to the lamp gain factor i.

The present invention is intended to implement a device for {correcting a frequency response, j free from the above disadvantages and having the property that; allows, in addition to obtaining the desired shape of the frequency response,, to have a high utilization of the lamp i (the greatest gain is t instead of; j. i in conventional circuits; t-conversion ratio).

In the drawing of FIG. 1 shows a circuit diagram of the device proposed, used in a conventional amplifier; FIG. 2 is the same, but in the application in the push-pull pattern.

The circuits (Figs. 1 and 2) for correcting the shape of the frequency response of the low-frequency amplifier are characterized by the presence of a transformer Tj in the anode circuit of the lamp. with tuned capacitance C in the secondary winding, blocking capacitors S., and complex resistances Z and Zg, which provide the transmission of direct current and connected according to the scheme.

Therefore, for the resonant frequency of the secondary circuit of the transformer TI, you can have the greatest gain, i.e., raising the desired part of the frequency response (by selecting the resonance frequency) and the required gain (taking the required transformation ratio). By selecting the values of the complex resistances Zj and Zg in the desired way, one can obtain the desired attenuation and the degree of decay of the remaining sections of the frequency response.

The letter Zo in the drawing denotes the anode load.

The subject matter of the invention.

A device for correcting the frequency response of low amplifiers

Interlamp j-formatted frequencies include a full matched transceiver with tuned wto | phenomena corresponding ends kotoricheskim contour, characterized in that | ryh interconnected capacitively with trans-windings in series; mi

 2

FIG. one