DE588486C - Device for measuring the secondary voltage on x-ray transformers with subdivided primary winding - Google Patents

Description

Device for measuring the secondary voltage on X-ray transformers with subdivided primary winding For devices with high-voltage transformers, in particular in the case of devices for X-ray generation, it is often desirable to adjust the voltage in advance to a desired amount without the Having to put high voltage transformer into operation.

The new, a high-voltage transformer with a subdivided primary winding having device for X-ray purposes, shown in the figures in two exemplary embodiments the circuit arrangement according to is shown schematically, this enables in particular easy way.

The invention relates to a device for measuring the secondary voltage on X-ray transformers with subdivided primary winding, in which the control device an electrical image necessarily with that of the high-voltage transformer is coupled. In contrast to a well-known establishment, the essence of the Invention is that for the purpose of previewing the voltage, regardless of the high-voltage transformer, the image is made connectable to the power source by itself.

Parallel to the stages a1 (Fig. Z) to a 'of the subdivided primary winding b of the high-voltage transformer and in the same sense as these stages are the stages cl' to c? an adjustable (inductive or ohmic) resistor d is connected to the supply current lines e and f . The regulating crank h for the primary winding b, which is directly connected to the one supply current line f via a switch g, is connected to the crank i used to regulate the resistance d, the one in series with the voltage measuring device k and, together with this measuring device, parallel to the end adjacent to the contact stage L. of the resistor d is switched from the feed line leading line, inevitably connected.

If the measuring device k is calibrated in such a way that instead of the voltage corresponding to a voltage level of the resistance d through which electrical current flows continuously and independently of the primary winding b (from the lines e and f ), the voltage (which is only dependent on the transformation ratio of the high-voltage transformer) Indicates the terminal voltage of the secondary coil in the high-voltage transformer, the terminal voltage of the secondary coil na of the high-voltage transformer can be set in the manner mentioned above on the measuring device k before the high-voltage transformer is started up, for example by means of the switch g.

With the new device, the high-voltage transformer b, m (Fig. A) and resistor d can be made continuously controllable in a known manner; the measuring device k can also be connected indirectly to the feed current lines e; f can be connected via a transformer n which controls the deflections of the measuring device k when the regulating device la, i are displaced.

In some cases it can be advantageous to have the meter in series to be connected to the supply current line with the (series) resistor d.

Claims (1)

PATENT CLAIM ; Device for measuring the secondary voltage on X-ray transformers with subdivided primary winding, the voltage being measured on an electrical image of the high-voltage transformer and the control device of the electrical image is necessarily coupled to the control device of the high-voltage transformer, characterized in that the electrical image, for the purpose of, Preview of the voltage of the high-voltage transformer that can be connected to the power source.