| 摘要 |
<p>The current through the primary winding of a high voltage transformer between the inverter and a high voltage rectifier supplying an X-ray tube is monitored. This value is compared with a threshold value, and a logic system uses the difference value to supply a control signal for switching transistors in the inverter to protect the system from excess currents. - The transistors form a full bridge, with only one transistor in each diagonal for effective decay of the energy in the transformer windings. The actual current values are obtained by using a current transformer and a differential amplifier.</p> |
