SU32186A1 - Device for recording sounds electrolytically - Google Patents

Description

In the proposed device for recording sounds by an electrolytic method, a metal slurry is passed through the electrolytic bath, covered with a thin layer of selenium. When the latter is illuminated by a strong light source at the location of electrolytes during electrolysis with a modulated current, a sediment is deposited on the tape (eg, silver). A periodically acting interrupter is included in the modulated current circuit in order to obtain a precipitate in the form of transfer bands.

In FIG. 1 depicts the electrical circuit of the device; FIG. 2 and 3 parts of this device.

The metal strip a, is covered with a thin layer: m selenium, is passed through an electrolytic bath, the solution in which serves as the AgNOsj anode — a silver silver electrode, and the cathode — a metal rod touching the back side of the tape. Instead of a metal tape, it can be applied: -: e: -ia lsnta from an insulating material, covered at both ends with stanilous facing plates, followed by applying a thin layer over the entire width (Fig. 2).

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The operation of the device is as follows. Rotate olkkk f, h (Fig. 1) and using a microphone g to produce m-specific sounds. The current in the microphone circuit varies, and since the electrode touches the back side of the tape of the metallic surface (in the second case, the paper quench faces), on the other hand, the selenium layer is illuminated by a strong light source r and therefore selenium. The surface is made conductive and a current flows through the electrolyte. Silver will pass through the narrow slot of the funnel and be deposited on the tape in layers whose thickness will vary depending on the change in current in the microphone circuit. To obtain separate transverse silver strip stripes, an interrupter r is inserted into the modulated current circuit (Fig. 1).

To reproduce the sound from the tape, it is passed between a pair of metal wheels n (Fig. 3), mounted on the short circuit of the material, which is not conducting current, and receives current from the brushes o. And the tape wheels are now enclosed in a dark cell, thanks to which selenium is a great resistance to current, and the latter will not go through it.

On f.zg. The 3 dotted arrows indicate the current path. He arrives at the first wheel, then passes a silver layer on the tape to the second wheel and then into the loudspeaker and the battery. The sound produced in front of the microfaram is now reproduced in a gramoptend2.

subject matter of the invention.

Claims (3)

1. A device for recording sound by an electrolytic method, characterized by the use of a transmission tape through an electrolysis bath of metallic tape covered with a thin layer of gold, illuminated by a strong light source at the location of the electrodes during electrolysis by a modulated current. 2. Modifying the device according to claim 1, characterized in that a tape made of an insulating material is applied to the inner tape, covered with both ceramic plates with subsequent coating over the whole width of a thin layer of selenium g. 3. In the device according to claims 1 and 2, use of a modulated current of the chopper, incorporated in cpc, in order to obtain a silver deposit on the tape in the form of separate transverse strips. FIG.