SU16274A1 - Radio - Google Patents

Description

. In the proposed radio receiver for duplex radrotelefonirovani introduced with fixture 1 Deno tselyu- SLYSHIM9STY own speech attenuation in the anode circuit of the first detector included lamtsy transformer secondary winding alternating current koto.rogo kenotron is rectified and the rectified constant voltage difference shifts toward negative the potentials of the working points of the grids are further amplified.

The drawing shows a diagram of a radio receiver, in the anode circuit of the first detector lamp of which a transformer Tr is connected, and a high frequency circuit is connected parallel to the lamp. Kenotron K and ohmic resistance S, are connected to the secondary transformer, one end of which is connected to the heating circuit and the other to the common conductor of all grid circuits. zhadnogo amplifier. The heat of the kenotron is powered by a common battery. Co-direction B is used to communicate the grid of: lamps of the intermediate amplifier with tricot potential. Parallel to the switch of R on the capacitor C

to regulate the rate of growth of negative potential.

Upon receipt of a signal and in the presence of self-oscillatory oscillations of the generator, oscillations of a lower frequency (biet) are created. Low-frequency oscillations excite the circuit, the currents of which are further amplified by a sub-amplifier. In this case, the modulated signal is not detected by the lamp and a small low-frequency electromotive motor develops on the secondary side of the transformer. During a conversation, the oscillations of the generator vary quite strongly, the lamp detects them directly and a significant electromotive force is obtained at the terminals of the secondary winding of the transformer. Thus, the dual operation of the first detector lamp takes place: in its anode circuit, a transformer generates energy of powerful natural modulation, and in the circuit connected to the lamp, the beating energy of the two carrier wave signals and the branch energy: the transmitter, i.e. separation of oscillations of different frequencies is obtained. Low frequency oscillations obtained on

A cobalt can be used to dampen the audibility of your own speech. For this purpose, the secondary winding of the transformer is fed to the Kenotron K through the resistance f. Then the alternating currents rectified by the kenotron create a constant potential difference across the resistance terminals R, this potential difference shifts the operating points of the grids of the intermediate amplifier lamps and removes it from the action with a sufficient bias voltage of the amplifier. I regulate the degree of rectification of the kenotron, for example,

 Nada, you can get different otritsa-.

 voltages on the grids of the lamps and thus regulate the degree of reduction of the gain as necessary.

The rate of increase of the negative potential is regulated by a capacitor C, which shunts the resistance E.

 The subject of the patent.

A device with a device for limiting the influence of one's own speech / with full-duplex radio telephony, characterizes the transformer Tp included in the anode circuit of the first detection lamp shunted by the high frequency circuit, the secondary circuit of the transformer includes a cenotron, a circuit of which heats from the same voltage source, from which both the glow circuits of all the receiver amplifying lamps are fed, and the ohmic resistance R, one end of which is connected to the glow circuit and the other end to the grid terminal, receiver amplifying lamps for the purpose of communicating their negative potential grids.

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80v