SU16275A1 - Tube radio - Google Patents

Description

, To obtain a large wavelength band during radio reception, usually interchangeable coils or partitioned coils are used with a switch. Replaceable coils are inconvenient, because of several tunable configurations; when using the same partitioned coils, they create detrimental tails of the switched off iiacTH coil, which must be closed, than the condition of e1; with the switch design. In addition, simultaneously with the coils of the tuning circuit, to change to obtain radiomer amplification and coils with which the circuit is connected inductively, for example, in the antenna or anode of the dump. ./

 The present invention aims to eliminate these disadvantages, for which purpose it is configurable; the receiver circuit includes a variometer mounted on a common axis, a variable capacitor, a capacitor, a switch and a switch.,.

In the drawing, FIG. 1 depicts a tuned receiver circuit; 2 and 3T-Details; Fig. 4- is a receiver diagram with the above tuned loop.

Tuning receiver circuit - consists of coil / self-induction 1

(Fig. 1) and a, applied to a common i axis of a capacitor of variable capacitance 2, variometer 3 and Switch 4. In switch 4 (Fig. 2), disk 5 (Fig. 2 and 3) of the ellipse shape is eccentrically fixed on common axis 6. Pr 7, connected to one end of the winding of the variometer 3, H9. presses on the distance 5. When the axis rotates from 0 ° to 180 °, i.e. with a shorter range wave, disk 5 (fig. 2) all the time lifts the spring 7, the latter touches contact 9 connected to the other end of the winding of the variometer, as a result of which the variometer in this position is short-circuited. When the axis is rotated from 180 to 360, the disk 5 (Fig. 3) does not lift the springs 7 and short-circuit the variometer shortly by contact 9 and the spring 7 does not occur. The configuration of the circuit in this case is performed simultaneously by the variable capacitance variometer.

A self-induction coil 8 (Fig. 1 and 4) connected to the antenna or anode circuit of the cathode lamp is located between the 4 gauge 3 and the self-injection coil of Suction 1 to change the coupling with the tuning loop. Significant connection with the rotation of the total pci from 0 ° to 180 °, i.e. at

the setting by the capacitor is carried out between 5 self-induction coils 1. and when rotated from 180 ° to 360 °, T.-e.nfjji is configured with a variometer, and capacitors. variable capacitance, communication is carried out simultaneously by coils 1 and 8, as well as a coil 8-ay of variometer 3.

, ...-.-: ,,, The subject of the patent.

A tube radio receiver, characterized in that in the tuning: circuit it includes a variometer 3 seated on a common axis, a variable capacitor 2 and a switch 4 with the aim that when the axis is 0 ° to 180 °, the tuning is made by a capacitor. variable capacitance when the variometer is closed with a switch, and i, with 1 further rotations of 180 ° to 3.60 °, the tuner was set with a variable capacitance capacitor and a variometer simultaneously.

2. The form of the radio receiver described in paragraph 1, characterized in that between the variometer 3 and the sambeynduction-1 coil is inductively connected with us to the self-induction coil 8, included in the antenna or in the anode circuit of the cathode lamp in order When configuring a variable capacitance capacitor, communication was made between the self-induction coils 1 and, 8 ,. and with variable capacitance / capacitor and variometer tuning, communication was made simultaneously by / coils 1 and 8, as well as coils 8 and. Variometer 3 and changed upon setting.

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