SU43935A1 - Wireless Telegraph Regenerative Receiver - Google Patents

Description

The main patent No. 824 describes a wireless telegraph acceptance device in which dual tuning is performed: at high frequency and at sound frequency. For this purpose, two oscillatory circuits are applied: one for high and one for low frequency. Both circuits are built on the principle of regeneration. As experience has shown, such a device has given a number of great advantages in wireless telegraph reception: high gain, high selectivity, interference reduction.

However, when adjusting the sound part of the receiver in the event of the appearance of a whistle, it becomes impossible. Therefore, one should not bind the grid circuit of the low-frequency lamp too much to its anode circuit.

This proposal is intended to safely increase the gain of the receiver and eliminate the possibility of generation in the low-frequency part of the careless handling of the communication body of the anodic and grid circuits of the sound-frequency filter.

In FIG. 1 and 2 depict possible implementation schemes for the proposed receiver. Here / depicts

(252)

high frequency oscillator; // - oscillating audio frequency circuit.

According to the invention, a system consisting of a capacitor, shunted by a linear or non-linear resistance, such as a neon lamp N (fig. 2), or a capacitor and self-induction selected so that oscillations of a very low frequency (infrasonic) or sound, but of a different tone, than the one to which the receiver's sound frequency circuit is tuned to occur.

The inclusion of such a device in the low-frequency part // (Figs. 1 and 2) of the receiver should cause either a current interruption or a low-frequency beating.

For this purpose, a separate tube oscillator can either be used, either of an infrasound frequency or of an audible frequency, giving a beat to the signal tone.

If you experience intermittent generation, the power of the sound in the phone will increase; although the sound is not solid, however, there will be no inconvenience for receiving intermittent tones.

The described device is similar to the schemes proposed by Armstrong, and then Flueling, for the so-called superregeneration. However, the present proposal essentially differs from the known superhepherapy regimens in that the frequency is not interrupted and the tone and tone of the reception are made intermittent. In addition, in contrast to the indicated schemes, the proposed device can relate only to telegraph reception.

The subject of invention.

Claims (4)

1. Modification of the wireless telegraph regenerative receiver according to patent No. 824 with double tuning for high and audio frequencies using high and low feedback. low frequency, characterized by the use of a device for interrupting tones either by low-frequency interruptions or by low-frequency beats. 2. In the receiver according to claim 1, connect a grid or anode of a sound generator to a capacitor shunted by a linear or non-linear resistance (for example, a neon lamp), selected so that an infrasound frequency occurs. 3. In the receiver according to claim 1, use a separate tube generator of infrasonic frequency. 4. In the receiver of claim 1, use a separate tube oscillator of audio frequency, giving a beat with a signal tone.