Auxiliary-voltage source for supplying electric circuits which are at a high potential
AssigneeLeybold-Heraeus GmbH
InventorsWolfgang Sperzel, Johann Sturmer
Life of this patent
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Abstract
In an auxiliary-voltage DC source for supplying an electric circuit and, more particularly, one at a high potential in an electron gun without an isolation transformer, the primary winding of a current transformer is located in an alternating-current section of the electric circuit. The current transformer has at least one secondary winding which is connected through a rectifier to a parallel regulator for providing the auxiliary-voltage.
Claims14
An auxiliary-voltage DC source for an electric circuit having AC and DC sections, comprising:
- a current transformer (25, 25a) which has a primary winding 24) in the AC section and at least a first secondary winding (26);
- a rectifier (27) connected across the first secondary winding (26) and having an output for the rectified potential therefrom;
- and
- a parallel regulator (28) connected to the output of the rectifier (27) and having an output for providing the auxiliary-voltage DC source to the electric circuit.
In an auxiliary-voltage DC source for at least one of control, measuring and regulating electric circuits of an electron gun, the electron gun also having an AC circuit section for power supply, a cathode, and a cathode heater circuit connected to the cathode and powered from the AC circuit section, the control circuit or element having a DC circuit section connected to the AC circuit section for responsively controlling an electron beam from the cathode in the electron gun, the improvement comprising:
- a current transformer (25, 25a) in the AC section and having at least a first secondary winding (26)
- a rectifier (27) connected across the first secondary winding (26) and having an output for the rectified potential therefrom;
- and
- a parallel regulator (28) connected to the output of the rectifier (27) and having an output (29) for providing the auxiliary-voltage DC source to the electric circuit.
Dependencies are inferred from the claim text.