SU119248A1 - Device for recording electrical voltage - Google Patents

Description

For recording electrical voltages, devices are known based on spraying a dye onto a moving tape carrying electric charges. These charges form a potential relief when a ribbon is passed through a gap between two electrodes, one of which is supplied with a bias voltage and a detected voltage.

The proposed device is more perfect, as it provides a better recording quality and greater speed.

This is achieved as a result of the fact that the second electrode is made of high electrical resistance material and serves as a potentiometer, at the ends of which an auxiliary voltage is applied, and the gap between the electrodes is made constant along their entire length.

FIG. 1 and 2 show the circuit of the proposed device in two versions; in fig. 3 is one of the embodiments of its electrode.

In the proposed device, the registration of electrical voltages is carried out by spraying the dye onto a moving tape / (Fig. 1), which is previously charged with an electric charge by an electrode 2.

Further, the tape 1 is passed between two electrodes 3 and 4, which partially neutralize the electrical charge at certain points of the tape and form a potential relief on it.

The electrode 3 is made of high electrical resistance material and an auxiliary DC voltage is applied to it.

The bias voltage is applied to the electrode 4 in such a way that the potential difference between the electrodes is different for different points along their length and in the middle part of the electrodes the number 119248-2 -

rez zero. The measured voltage is also applied to electrode 4 and causes a zero point displacement of the resultant potential along the electrodes. When the tape passes between electrodes 5 and 4, it partially neutralizes its surface charge, depending on the magnitude of the measured voltage.

The resulting electrostatic (ionic) image is produced with the help of a "magnetic brush 5. The fixing of the image is performed by fusing the dye by passing the tape / through the hot drum 6.

In the second embodiment of the device (Fig. 2), the tape / is pre-passed through a hopper 7, where a layer of dye powder is applied to it. Then, as it passes through the gap between the electrodes 3 and 4, sections of the surface of the tape that have received a charge of the same sign attract particles of a dye that have a charge of the opposite sign, with the result that a diagram of the recorded voltage over time is obtained on the tape.

In some cases, it may be necessary for the voltage drop along electrode 3 to be different from linear.

For this purpose, electrode 5 is made in the form of a series of elements 8 (Fig. 3) insulated from one another, connected to different points of potentiometer 9, at the ends of which an auxiliary voltage is applied.

Subject invention

Claims (2)

1. A device for registering electrical voltages by spraying a dye onto a moving tape that carries electrical charges that form a potential relief on it when the tape is passed through a gap between two electrodes, one of which is supplied with a bias voltage and a recorded voltage that is different that, in order to improve the recording quality and increase the speed, the second of these electrodes is made of a high electrical resistance material and serves as a potentiometer, at the ends of which auxiliary the voltage is maintained, and the gap between the electrodes is made constant along their entire length. 2. A device change according to claim 1, characterized in that the second of said electrodes is made as a series of insulated one from the other elements connected to different points of the potentiometer, at the ends of which an auxiliary voltage is applied. Committee on Inventions and Discoveries at the Council of Ministers of the USSR Editor LA BlatovaGr. 95, 166, 169 Information and Publishing Department. Sub. to pec. 5.V-59 g. Volume 0.34 p. L. Zak. 2614 Circulation 935Price 50 kopecks. Printing house of the Committee on Inventions and Discoveries at the Council of the USSR Ministry of Peace Moscow, Petrovka, 14.