| 摘要 |
A high voltage power supply particularly for use in small diameter spaces such as in oil well logging devices. An axial linear high voltage step-up transformer has an integral through hole in the internal ferrite, low voltage sensing signals may be passed through from the output section of the power supply. In addition, a magnetic field shield is designed into the device to prevent eddy currents from forming in the metallic pressure vessel housing which is used to contain the neutron generating tube which is under pressure of an insulating gas such as sulfur hexafluoride. By constructing an axial transformer, and passing the signal leads through the internal hole, the largest amount of internal dielectric may be utilized, increasing the reliability of the transformer. By containing the magnetic field and limiting the eddy currents induced in outside metals, the converter efficiency may be raised to the maximum possible.
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