EP0106482A1
Expired / Lapsed
EP
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High tension DC voltage generating apparatus
Assignee: Toshiba Corp
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Filing: 1983-09-02
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Granted: —
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Expires: 2003-09-02
Abstract
Abstract A high tension DC voltage generating apparatus includes a transformer (6) having a primary winding (7) to which an AC voltage is supplied and n secondary windings (8 1 - 8 n ), and first and second rectifier circuits (13 and 14) each containing (n+I) (13 l - 13 n+l : 14, - 14 n+l ) which are connected in series in the same direction of polarity and are correspondingly arranged to form a plurality of stages of diode pairs (13, and 14, - 13 n+l and 14 n+l ), The diode pairs (13 l and 14,: 13n +l and 14 n+l ) of the first and last stages are interconnected at the cathodes and the anodes, respectively. The secondary windings are connected between the anodes of the diode pairs except between the diode pairs (13 n+l , 14 n+l ) of the last stage, while being arranged with the polarities alternately reversed.
Inventors
- 👤 Toshihiro Onodera
- 👤 Youichi Masuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 17:28
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/325; H02M3/335; H02M7/00; H02M7/02; H02M7/04; H02M7/06; H02M7/10; H05; H05G; H05G1/00; H05G1/08; H05G1/10; H05G1/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
216 words
A high tension DC voltage generating apparatus characterized by comprising: a transformer (6) having a primary winding (7) connected to an AC power supply source and a plurality of secondary windings (8 1 - 8 n ); a first rectifier circuit (13) having a plurality of rectifier elements (13 1 - 13 n+1 ) connected in series in the same direction of polarity; a second rectifier circuit (14) having a plurality of rectifier elements (14 1 - 14 n+1 ) connected in the same manner and direction as the plurality of rectifier elements in said first rectifier circuit, the plurality of rectifier elements in said first and second rectifier circuits being correspondingly arranged one-to-one to form rectifier element pairs (13 1 and 14 1 , ..., 13 n+l and 14 n+1 ) of a first to (n+l)th stages; a positive load terminal (15a) connected to the cathodes of the rectifier element pair (13 1 and 14 1 ) of said first stage; a negative load terminal (15b) connected to the anodes of the rectifier element pair (13 n+1 and 14 n+l ) of said (n+l)th stage; each of said secondary windings being connected between the anodes of a corresponding rectifier element pair except between the rectifier element pair of said (n+l)th stage, with polarities alternately reversed.
Claim 2
Dependent Claim
216 words
A high tension DC voltage generating apparatus characterized by comprising: a transformer (6) having a primary winding (7) connected to an AC power supply source and a plurality of secondary windings (8 1 - 8 n ); a first rectifier circuit (13) having a plurality of rectifier elements (13 1 - 13 n+1 ) connected in series in the same direction of polarity; a second rectifier circuit (14) having a plurality of rectifier elements (14 1 - 14 n+1 ) connected in the same manner and direction as the plurality of rectifier elements in said first rectifier circuit, the plurality of rectifier elements in said first and second rectifier circuits being correspondingly arranged one-to-one to form rectifier element pairs (13 1 and 14 1 , ..., 13 n+l and 14 n+1 ) of a first to (n+l)th stages; a positive load terminal (15a) connected to the cathodes of the rectifier element pair (13 1 and 14 1 ) of said first stage; a negative load terminal (15b) connected to the anodes of the rectifier element pair (13 n+1 and 14 n+l ) of said (n+l)th stage; each of said secondary windings being connected between the anodes of a corresponding rectifier element pair except between the rectifier element pair of said (n+l)th stage, with polarities alternately reversed.
Claim 3
Dependent Claim
107 words
A high tension DC voltage generating apparatus according to claim 1, characterized in that said AC power supply source comprises a DC power supply source (11) connected at one end to one end (7a) of said primary winding (7) through a switching element (10) which is periodically turned on and off, and at the other end to the other end (7b) of said primary winding (7); a resonant capacitor (9) connected across said primary winding; and a dumper diode (12) connected at the anode to said one end (7a) of said primary winding and at the cathode to said one end of said DC power supply source.
Claim 4
Dependent Claim
87 words
A high tension DC voltage generating apparatus according to claim 2, characterized in that a characteric impedance ranges from 0.5 to 500 ohms, said characteric impedance (Z o ) being defined to be equal to the square root of a ratio (L/C) of the inductance (L) of said primary winding (7) to the capacitance (C) of said resonant capacitor (9); and a ratio of the turn on period (Ton) to one cycle of the switching period (T) of said switching element (10) ranges from 0.05 to 0.5.
Claim 5
Dependent Claim
35 words
A high tension DC voltage generating apparatus according to claim 1, characterized in that said positive and negative load terminals (15a, 15b) are connected to the anode and cathode terminals of an X-ray tube, respectively.
References Cited (Backward Citations)
US3419786A
Cited
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