SU107999A1 - Galvanometer - current converter - Google Patents

Description

Pedlzgaeh s device belongs to the izpegtpomuyu type of galvanometers - {converters, giving peremetli then ;; higher frequency, Eelichl1; e, proportionalHoii direct current.

Milk 1 of the same instruments of the same deptor iazpachapi, predlavae Uz; ii the priors are equipped with a permanent magnet, in the air gaps of which the working sides of the frame are misaligned, and the attachment ;; to consol .: magnet tips magnetnnoy system, image of the two coils,

Totah, and create in these air gaps variable magnet; itnl :) 1e nol.

These variable magnetic fields excite in a frame while rotating under the action of a flown, its frequency, which is not measured by direct current, alternating current, is increased.

The purpose of the inventor is to increase the conversion rate of the device but the voltage and simplify the process of combining bullet nozzles on constant and alternating currents.

The supplied volatility is solved, according to the invention, by separating the magnetizing line of the magnetic system of the system ;; frequencies into two independent paths created in the air gaps of the permanent magnet separate -1C through the MCiiHire magnetic field, m entered 1 into the pole tips of the magnet and the magnetic field or etc. of the high frequency cores forming the sections of the above mentioned sections, forming part of the above mentioned sections, etc. It is possible to adjust the size of the air gaps for metai MaiHiKTHBix zeros.

FIG. 1 and 2, schematically from 6pa7icaiOHV ie part of the proposed galvanometer-converter, as explained in G1rnn1I, the experimental map of the high-frequency transmission

magnetic zero Fros in the gaps of the heart and the pole tips of the magnet. FIG. 3 and 4 are represented in the village ;; uh nroek1 and x are structurally made of the device.

As seen from FIG. 1, Katui1. current-driven, high frequency and imaging; single, two of them according to VK; pendent inductive coils of the circuit of the electronic generator LC, create separate alternating magnetic fields in the right and, respectively, in the left gaps of the constant l of the amplifier 2. FIG. . 2, the frame 3 of the galvanometer fed by the measured direct current 1p is shown in the zero position. The emf of mutual inductance is not induced on it, since its coils are parallel to the power lines of the alternating magnetic field. Depending on the magnitude and sign of the frame turn from the zero position, and therefore, depending on the magnitude and polarity of the input voltage signal (Jp, on the turns of the turn frame 3, the corresponding amplitude and phase of the emf of the mutual inductance of increased frequency is induced. EMF phase when changing the polarity of the measured signal is changed by 180.

In order to ensure the possibility of separate control of the size of the air gaps for the variable magnetic fields created by the coils /, in the pole tips of the magnet 2 there are openings into which cores 4 and stationary cylindrical cores 5 that are movable on the thread are inserted; The cores 4 and 5 are made of material having its small magnetic resistance for high frequency fields (magnetite, carbonyl iron).

The movable cores 4 make it possible to vary the size of the air gaps for magnetic flux FR o. increased frequency, increasing the efficiency of the converter and greatly facilitating its adjustment. Between the cylindrical high-frequency cores 5 there is a strip 6 of low carbon steel, which serves to separate the left magnet of the increased frequency from the right. The introduction of the pad increases the conversion rate. Coils / fasteners

special sleeve 7 and are located at a distance of 0.3 | -0.5 mm against the cylindrical cores 5. The combination of the zero positions of the frame 3 in the variable and constant currents (voltage) is achieved by appropriate installation of the moving frame 3 relative to the coils / with the help of a micrometer screw (not shown in the drawing) connected to the upper spiral galvanometer.

Subject invention

Galvanometer is a current transducer that provides alternating current of increased frequency, proportional to the measured DC current, with a permanent radio tape recorder, in the air gaps of which the working sides of the rotary frame are located, and with a magnetic system attached to the pole pieces of the magnet and equipped with two coils powered by a current of increased frequency, and creating in the specified air gaps untimely competitive fields, exciting in the frame after its rotation under the action of the measured constant flow through it alternating current voltage of increased current, frequency, that is, in order to increase the conversion ratio of the device in terms of direction and simplify the process of combining the zero positions of the frame on the constant and alternating currents The increased frequency systems are subdivided into two independent paths, creating separate alternating magnetic fields in the permanent magnet air gaps, and adjustable magnetite or the like high-frequency serifs are inserted into the zero pole of the magnet tips. echniki forming a portion of said paths and guides permits separately to adjust the air gap to alternating magnetic fields. FIG. one

KO 107999

3

FIG. 2

FIG. 3