SU983763A1 - Potentiometer - Google Patents

Description

(54) POTENTIOMETER

The invention relates to electrical measuring technology and can be used in automatic control systems.

A potential potentiometer is known, whose resistive element is a high-resistivity wire, laid around the circumference l.

The disadvantages of the potentiometer include the need to supply a flexible current path to the movable current collector and large dimensions.

A potentiometer is known, which contains a reichord and a parallel tire parallel to it, wound on a cylindrical insulating frame, a current collector and a mechanism for its movement 2.

The disadvantage of the potentiometer is the small accuracy of the potential setting, limited by the length of the reichord.

The purpose of the invention is to reduce the size and increase the accuracy of the installation potential.

This goal is achieved by the fact that, in a potentiometer containing a reohord and an efty parallel to the tire, wound on a cylindrical insulating frame, a current collector and its mechanism of movement, the frame is made with a two-wavy thread, thread, the profile of which corresponds to the thread profile of the frame, with one end of the tire attached to the insulating frame; and the other is connected to the output terminal.

FIG. 1 shows a potentiometer, general view; in fig. 2 - section aa

10 in FIG. 1 in FIG. 3 shows a section BB in FIG. 1, in FIG. 4 is an electrical potentiometer circuit.

The potentiometer contains a sleeve 1 made of a non-magnetic material with high thermal conductivity, onto which a frame 2 is pressed, made of durable electrically insulating material, on the outer surface of which a two-pass cut

Claims (2)

20 is a thread into which it is parted and wound onto a skeleton 2 reohord and a tire (not shown). The frame 3 is screwed on the nut 3, made of electrically insulating material and provided with a thread, the profile of which corresponds to the thread profile of the frame, and the tops of the thread are trimmed by an amount excluding their contact with the reohord and the tire. On rart30 ke 3, a ring 4 is fixed with a scale (not shown), a self-balancing spring-loaded current pickup roller 5, a gear wheel b and a nonius 7. The gear wheel 6 is engaged with gear 8, mounted on the shaft 9) and having the ability to move along the shaft. Sleeve 1 and shaft 9 are installed between the cheeks 10, on which the sighting window 11 is located. To ensure the resistance in the output circuit of the potentiometer, the reocord and current collector clay are made of the same material, with one end of the tire free (Fig. 4) and fixed to the insulation the frame and the other is connected to the output terminal from which the potential is removed. The potentiometer works as follows. When the shaft 9 rotates, the gear 8 rotates, which transmits the rotational force to the gear wheel 6, while the nut 3 with the roller 5 rotates and, together with the jib, moves from along the axis of the frame 2 and the shaft 9. at the same time as the rail and tire made of the same material, when moving, it acts as an electrically conducting jumper. Potentiometer provides the necessary accuracy of installation for small dimensions. The invention The potentiometer containing a re-chord and a parallel tire located on it, wound on a cylindrical insulating frame, self-balancing spring-loaded current, a removable roller and a mechanism for its movement, characterized in that. the thread, and the movement mechanism is in the form of an insulating nut with an internal thread with cut tops, the profile of which corresponds to the thread profile of the frame, with one end of the tire Replen on the insulating frame, and the other - is connected to the output terminal. Sources of information taken into account in the examination 1. Electric measurements. Ed. E. G. 1famkova, M., Higher School, 1972, p. 111, fig. 6 2. For France I, 2171852, cl. H 01 C 9/02, 13.06.73. Yu Phage. 2