US2008496A - Inverse suppressor for x-ray systems - Google Patents
Inverse suppressor for x-ray systems Download PDFInfo
- Publication number
- US2008496A US2008496A US721661A US72166134A US2008496A US 2008496 A US2008496 A US 2008496A US 721661 A US721661 A US 721661A US 72166134 A US72166134 A US 72166134A US 2008496 A US2008496 A US 2008496A
- Authority
- US
- United States
- Prior art keywords
- inverse
- suppressor
- ray systems
- resistance
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003874 inverse correlation nuclear magnetic resonance spectroscopy Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- MXBCYQUALCBQIJ-RYVPXURESA-N (8s,9s,10r,13s,14s,17r)-13-ethyl-17-ethynyl-11-methylidene-1,2,3,6,7,8,9,10,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-ol;(8r,9s,13s,14s,17r)-17-ethynyl-13-methyl-7,8,9,11,12,14,15,16-octahydro-6h-cyclopenta[a]phenanthrene-3,17-diol Chemical compound OC1=CC=C2[C@H]3CC[C@](C)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1.C1CC[C@@H]2[C@H]3C(=C)C[C@](CC)([C@](CC4)(O)C#C)[C@@H]4[C@@H]3CCC2=C1 MXBCYQUALCBQIJ-RYVPXURESA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05G—X-RAY TECHNIQUE
- H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
- H05G1/08—Electrical details
- H05G1/10—Power supply arrangements for feeding the X-ray tube
- H05G1/14—Power supply arrangements for feeding the X-ray tube with single-phase low-frequency AC also when a rectifier element is in series with the X-ray tube
- H05G1/16—Reducing the peak-inverse voltage
Definitions
- This invention relates to an inverse suppresis shown the effect attained through the use of sor for X-ray systems and has for its object to provide a simple, reliable and effective suppressor means of this character.
- the invention contemplates the utilization of a resistance connected in parallel with a dry rectier, the rectifier and resistance being connected to the primary of the conventional high tension transformer used in X-ray systems.
- Fig. 1 is a diagram illustrating the location of the dry rectier and resistance in the X-ray circuit
- Fig. 2 is a diagram illustrating the reduction in the wave attained by the use of the improved suppressor.
- I illustrates a conventional X-ray tube of the hot cathode type having a ilament 3 which is connected to the filament transformer 5 in the usual way.
- the tube is provided with the conventional anode 2 which is connected to the secondary 4 of the high tension transformer I5.
- the opposite end of the secondary is connected by the wire I6 to the lament 3 in the conventional manner illustrated.
- At 6 is idicated the primary winding of the high tension transformer I5, one end 'I of said primary being connected to several dry rectiiiers 8 which are connected in parallel with a resistance 9.
- the wires I1 and I8 are connected to a suitable source of current.
- Fig. 2 The effect of this rectifying circuit located in the primary of the high tension transformer is clearly illustrated in Fig. 2.
- iigure At the left of said iigure is the conventional transformer potential as it appears without the use of the rectiiiers 8 and resistance 9 in the primary.
- the rectiers and resistance At the right the rectiers and resistance. It Will be seen in the curve shown at the left of the gure that the wave II above and that indicated at I2 below the neutral line Il), is of equal curvature.
- the upper wave I3 corresponds to that shown at II, while the lower wave I4 has been materially reduced, or approximately to of the wave I2, as shown in the left portion of the figure.
- the reason for this inverse suppression or rather' partial suppression is as follows:
- the X-ray tube acts as its own rectier permitting current to ow for a half cycle only, that is, when the anode is positive.k
- the dry rectifier in the 15 primary circuit is so connected that current flows freely during this half cycle, but is checked and must flow through the resistance during the other half cycle.
- This resistance is chosen of such a value as to materially lower the primary 20 charging current ow and consequently the potential in the primary at this period.
- a non-resonant inverse-reducing means for X-ray systems comprising, a hot cathode X-ray tube, a high tension transformer having pri- 30 mary and secondary windings, lthe secondary winding being connected to the tube, a dry rectier being connected to one end of the primary winding, and a resistance in parallel with the rectifier, said means constituting a circuit the stable 35 operation of which is not dependent upon resonance and which causes no change in the normal form of the primary wave.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- X-Ray Techniques (AREA)
Description
July 16, 1935.T l H. D. GARRETsoN 2,008,496
INVERSE vSUPPRESSOR FOR X-RAY SYSTEMS Filed Apri; 21, 19:54
l TTORNEY Patented July 16, 1935 UNITED STATES PATENT OFFICE INVERSE SUPPRESSOR FOR X-RAY SYSTEMS 1 Claim.
(Cl. Z-34) This invention relates to an inverse suppresis shown the effect attained through the use of sor for X-ray systems and has for its object to provide a simple, reliable and effective suppressor means of this character.
More specically, the invention contemplates the utilization of a resistance connected in parallel with a dry rectier, the rectifier and resistance being connected to the primary of the conventional high tension transformer used in X-ray systems.
In the accompanying drawing wherein an embodiment of the invention is shown, Fig. 1 is a diagram illustrating the location of the dry rectier and resistance in the X-ray circuit; and Fig. 2 is a diagram illustrating the reduction in the wave attained by the use of the improved suppressor. Y
In the accompanying drawing, I illustrates a conventional X-ray tube of the hot cathode type having a ilament 3 which is connected to the filament transformer 5 in the usual way. The tube is provided with the conventional anode 2 which is connected to the secondary 4 of the high tension transformer I5. The opposite end of the secondary is connected by the wire I6 to the lament 3 in the conventional manner illustrated.
At 6 is idicated the primary winding of the high tension transformer I5, one end 'I of said primary being connected to several dry rectiiiers 8 which are connected in parallel with a resistance 9. The wires I1 and I8 are connected to a suitable source of current.
The effect of this rectifying circuit located in the primary of the high tension transformer is clearly illustrated in Fig. 2. At the left of said iigure is the conventional transformer potential as it appears without the use of the rectiiiers 8 and resistance 9 in the primary. At the right the rectiers and resistance. It Will be seen in the curve shown at the left of the gure that the wave II above and that indicated at I2 below the neutral line Il), is of equal curvature. At 5 the right of the iigure, it will be seen that the upper wave I3 corresponds to that shown at II, while the lower wave I4 has been materially reduced, or approximately to of the wave I2, as shown in the left portion of the figure.
The reason for this inverse suppression or rather' partial suppression is as follows: The X-ray tube acts as its own rectier permitting current to ow for a half cycle only, that is, when the anode is positive.k The dry rectifier in the 15 primary circuit is so connected that current flows freely during this half cycle, but is checked and must flow through the resistance during the other half cycle. This resistance is chosen of such a value as to materially lower the primary 20 charging current ow and consequently the potential in the primary at this period.
The use of the dry rectiiiers and resistance in parallel with the rectiiiers, for this purpose have been found to be of long life and entirely 25 satisfactory in result.
What I claim is:
A non-resonant inverse-reducing means for X-ray systems comprising, a hot cathode X-ray tube, a high tension transformer having pri- 30 mary and secondary windings, lthe secondary winding being connected to the tube, a dry rectier being connected to one end of the primary winding, and a resistance in parallel with the rectifier, said means constituting a circuit the stable 35 operation of which is not dependent upon resonance and which causes no change in the normal form of the primary wave.
HARRY D. GARRETSON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US721661A US2008496A (en) | 1934-04-21 | 1934-04-21 | Inverse suppressor for x-ray systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US721661A US2008496A (en) | 1934-04-21 | 1934-04-21 | Inverse suppressor for x-ray systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2008496A true US2008496A (en) | 1935-07-16 |
Family
ID=24898796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US721661A Expired - Lifetime US2008496A (en) | 1934-04-21 | 1934-04-21 | Inverse suppressor for x-ray systems |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2008496A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431080A (en) * | 1943-12-04 | 1947-11-18 | Ritter John Joseph | Method and apparatus for combining alternating- and direct-current voltages |
| US2495122A (en) * | 1947-07-10 | 1950-01-17 | Ritter Co Inc | Method of and apparatus for energizing self-rectifying loading devices |
| US3221167A (en) * | 1963-11-26 | 1965-11-30 | X Ray Mfg Corp Of America | X-ray system with reduced inverse voltage |
| US3413559A (en) * | 1964-12-11 | 1968-11-26 | Litton Prec Products Inc | Transformer reset circuit for microwave oven |
| US3413475A (en) * | 1965-12-29 | 1968-11-26 | Westinghouse Electric Corp | X-ray tube power supply for producing a series of selected numbers of consecutive alternating current voltage cycles |
-
1934
- 1934-04-21 US US721661A patent/US2008496A/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2431080A (en) * | 1943-12-04 | 1947-11-18 | Ritter John Joseph | Method and apparatus for combining alternating- and direct-current voltages |
| US2495122A (en) * | 1947-07-10 | 1950-01-17 | Ritter Co Inc | Method of and apparatus for energizing self-rectifying loading devices |
| US3221167A (en) * | 1963-11-26 | 1965-11-30 | X Ray Mfg Corp Of America | X-ray system with reduced inverse voltage |
| US3413559A (en) * | 1964-12-11 | 1968-11-26 | Litton Prec Products Inc | Transformer reset circuit for microwave oven |
| US3413475A (en) * | 1965-12-29 | 1968-11-26 | Westinghouse Electric Corp | X-ray tube power supply for producing a series of selected numbers of consecutive alternating current voltage cycles |
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