SU92846A1 - Electrostatic Voltmeter - Google Patents

Description

The proposed voltmeter is made with a uniform scale while retaining all the advantages inherent to the instruments of this system. For this purpose, it uses the indicator-electroism) and is equipped with a linear scale. The indicator includes a diagonal of an electronic bridge controlled by a voltage, which is removed from the diagonal of the other bridge, containing 1 photo cells, illuminated from the mirror of an electrodynamic device. Electrode: A single device, in turn, connected with an indicator along with an indicator, is preassigned to create a rotating MOMeirra, a moment-compensating electrostatic device.

In the drawing of pre, d, an electrical circuit of the proposed in, 1-net is put.

Moving cog 1 electrodynamic device and in the field of a stationary coil 2; coils are connected in series. Axis 3 KaTynJKH / is reinforced with tension joints 4 (to be performed on a suspension or on cores) and a 5 n plate 6 mirror is attached to it.

Measured voltage (voltage is supplied to two aluminum plastics M-disks 6 7, which are air condensing coils. Disk 7 is reinforced by an insulator on the insulator 8, disk 6 is movable and insulated from the moving coil / sleeve 9. Current to disk 6 is supplied through the spring contact 10. The light from the source // falls on the mirror 5 and, reflected from it, hits the mirror 12, which distributes the light so that it equally illuminates the photo cells FE1 and FE2 of the photocell that controls the bridge bridge, in diatoma. lamp bridge included electrically-electric device / ,, movable coil / n podvodviggta "Atushka 2.

When the device is connected to the measured voltage, OIO is fed to the disks 6 and 7 of the air} of the south of the capacitor. The power of electrostatic NO 9284G- 2 -

cKoro of attraction causes the system to turn a corner. The mirror 5 also rotates at the same angle, due to which the illumination of the photocells changes so that one turns out to be lit more and the other less. This causes an imbalance of the luster of the photocells, at the points pg and p a voltage appears that is applied to the grids of the lamps L and Lz, which in turn causes the unbalance of the lamp bridge and current flows along its diagonal. The current passing through the coils 1 and 2, tells the moving system the moment, directed towards the moment of the air condenser. These moments compensate each other.

Measuring the electric current flowing through the coils 1 and 2 with the device b, it is possible to judge the measured voltage at the input of the device, since the current is directly proportional to the measured value. This makes it possible to isolate the device 6 with a magneto-electric e with a uniform scale graduated directly in volts.

Subject invention

Electrostatic voltmeter, tl and h ay HI, and with the fact that, in order to obtain a uniform scale.: N:, 1, dl of reference iioKasannif. proportional to the direct voltage, which uses a linear glitter detector, included in the diagonal of the electronic bridge, on whose grids of the electron tubes the unbalance voltage of the other bridge, made up of two photocells suspended from the mirror of the electrodynamic device, is moving nodvizhny plate of an electrostatic system.