CN1173380C - Saturated reactor - Google Patents
Saturated reactor Download PDFInfo
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- CN1173380C CN1173380C CNB01139367XA CN01139367A CN1173380C CN 1173380 C CN1173380 C CN 1173380C CN B01139367X A CNB01139367X A CN B01139367XA CN 01139367 A CN01139367 A CN 01139367A CN 1173380 C CN1173380 C CN 1173380C
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
- H01J29/76—Deflecting by magnetic fields only
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/56—Correction of beam optics
- H01J2229/568—Correction of beam optics using supplementary correction devices
- H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/70—Electron beam control outside the vessel
- H01J2229/703—Electron beam control outside the vessel by magnetic fields
- H01J2229/7032—Conductor design and distribution
- H01J2229/7033—Winding
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- Details Of Television Scanning (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The invention provides a low-cost saturable reactor, capable of supplying a biased magnetic field efficiently and having a low leakage magnetic field from magnetic poles. The S-pole of a first magnet 11 is brought into contact with a core 1, and the N-pole of a second magnet 12 is brought into contact with a core 3. A closed magnetic member 14 magnetically connects the N-pole of the magnet 11 to the S-pole of the magnet 12 to form a closed magnetic circuit. The member 14 is made of a magnetic steel sheet, such as a silicon steel plate for example and has spring elasticity. Similarly, magnets 22 and 21 are provided for the cores 2 and 4, respectively, and a closed magnetic member 24 is provided for the magnets 22 and 21.
Description
Technical field
The saturable reactor that the present invention relates in the deflecting coil of CRT (cathode ray tube) display unit, be suitable for, constitute color misconvergence correction circuit or pincushion distortion correction circuit.
Background technology
As the prior art that saturable reactor is used for deflecting coil, can enumerate for example color misconvergence correction circuit or pincushion distortion (pincushion distortion) correction circuit.Though both circuit constitute different, used saturable reactor is identical.The following describes separately circuit and both common saturable reactors.
The color misconvergence correction circuit
The vertical direction color misconvergence in＜picture four bights 〉
Be used for illustrating the schematic diagram of the vertical direction color misconvergence (hereinafter referred to as ' PQv ') in four bights that occur in picture shown in Figure 13.So-called as shown in Figure 13 PQv is meant that horizontal line R, the B of upper and lower end parts of the screen of CRT or picture 200 is in left and right directions (laterally) the central authorities vertically color misconvergence of dislocation (inclination) state across of picture 200.In addition, horizontal line R, B are described on picture 200 by the both sides electron beam of in-line gun.
Known, in order to revise the color misconvergence that this horizontal line intersects, make the center of the horizontal deflection magnetic field that deflecting coil takes place vertically parallel move just passable.In general, because deflecting coil comprises a pair of horizontal deflection coil up and down, can realize the parallel mobile of above-mentioned magnetic field so flow through the split ratio of the electric current of each horizontal deflection coil by change.At this moment since concerning PQv about picture 200, the upper and lower relation of horizontal line R, B is opposite, so be necessary and cycle (hereinafter referred to as ' vertical cycle ') of vertical direction dynamic above-mentioned split ratio of control synchronously.
The formation of＜PQv correction circuit 〉
As the prior art that is used for revising PQv, be utilized widely with the method for saturable reactor.Be used for illustrating the circuit diagram of one of the PQv correction circuit example of prior art shown in Figure 14.
As shown in Figure 14, horizontal yoke current IH flows through horizontal yoke current path between terminals P 1, P2 in the PQv of prior art correction circuit.Horizontal deflection coil LH1 between terminals P 1, P2, level correction coil L2P, L1P are connected in series in proper order by this, constitute the 1st current path.Equally, horizontal deflection coil LH2 between terminals P 1, P2, level correction coil L4P, L3P are connected in series in proper order by this, constitute the 2nd current path.That is to say that the 1st current path and the 2nd current path are being connected in parallel between terminals P 1, P2.
In addition, vertical yoke current IV flows through vertical yoke current path between terminals P 3, P4 in the PQv of prior art correction circuit.Between terminals P 3 and intermediate terminal P11, be provided with frame deflector coil LV.Moreover, because frame deflector coil LV can consider all formations such as a plurality of coils and a plurality of resistor combination circuit, so illustrate with square frame for convenience's sake.Vertical correction coil L5P is being connected with resistor R 1 with being connected in parallel to each other between intermediate terminal P11 and terminals P 4.
The effect of＜PQv correction circuit 〉
Effect (hereinafter addressing) by saturable reactor, the occasion that flows through at vertical yoke current IV in the above-mentioned PQv correction circuit (occasion of deflection picture top and the bottom just) produces difference in the combination inductance of the combination inductance of level correction coil L1P, L2P and level correction coil L3P, L4P.For example become greatly the picture top latter, the former becomes greatly (opposite occasion is also arranged) in the picture bottom.
Thereby,, move owing to flow through the 1st current path on picture top so middle mind-set horizontal deflection coil LH2 one side of horizontal deflection magnetic field is parallel than the more electric current of the 2nd current path.On the contrary,, because flowing through the 2nd current path, moves in the electric current of Duoing than the 1st current path in the picture bottom so middle mind-set horizontal deflection coil LH1 one side of horizontal deflection magnetic field is parallel.The center of horizontal deflection magnetic field is moved the parallel in opposite direction up and down of picture, can revise PQv thus.
The pincushion distortion correction circuit
The pincushion distortion of the ordinate of＜picture left and right directions pars intermedia 〉
Be used for illustrating the schematic diagram of the pincushion distortion (hereinafter referred to as ' middle pincushion distortion ') of the ordinate that the left and right directions pars intermedia at picture produces shown in Figure 15.As shown in Figure 15, so-called middle pincushion distortion is meant that the ordinate G1 in the left and right end portions of picture 200 is substantially rectilinear occasion, the state of the ordinate G2 pincushion ground distortion of the left and right directions pars intermedia of picture.Moreover ordinate G1, G2 are described on picture 200 by the center electron beam of in-line gun.
In other words, middle pincushion distortion also can be described as the interval of adjacent ordinate, and the linearity of horizontal deflection just (hereinafter referred to as ' horizontal linearity degree ') is at the above-below direction end of picture 200 state different with the above-below direction central portion.Thereby, by with the vertical cycle controlling level linearity synchronously, pincushion distortion in the middle of can revising.
, in general, the horizontal linearity degree correction circuit that is called S word correction circuit in the CRT display unit is connected in series in horizontal deflection coil.This circuit becomes greater than the ordinate interval of left and right directions central portion at interval by the ordinate that modulation level deflection current waveform suppresses picture left and right directions end.This inhibition effect reduces along with the increasing of the inductance of horizontal deflection coil, strengthens along with the reducing of inductance of horizontal deflection coil.Thereby, synchronously change pincushion distortion in the middle of can revising by inductance and the vertical cycle that makes horizontal deflection coil.
The formation of＜middle pincushion distortion correction circuit 〉
Be used for illustrating the circuit diagram of one of the middle pincushion distortion correction circuit example of prior art shown in Figure 16.As shown in Figure 16, in the middle pincushion distortion correction circuit of prior art, horizontal yoke current IH flows through the horizontal yoke current path between terminals P 1, P2.Horizontal deflection coil LH1, LH2 are connected in parallel with each other between terminals P 1 and the intermediate terminal P12.Level correction coil L2P, L1P, L3P, L4P are connected in series between intermediate terminal P12 and the terminals P 2 in proper order by this.
In addition, in the middle pincushion distortion correction circuit of prior art, vertical yoke current IV flows through the vertical yoke current path between terminals P 3, P4.The formation in this vertical yoke current path is identical with the vertical yoke current path of above-mentioned PQv correction circuit.
In addition, those of the formation of used saturable reactor 101P and above-mentioned PQv correction circuit are identical in the middle pincushion distortion correction circuit of prior art.
That is to say that middle pincushion distortion correction circuit and PQv correction circuit are identical circuit formations except being connected form different (being series connection or parallel connection) of horizontal deflection coil and level correction coil and.
The effect of＜middle pincushion distortion correction circuit 〉
Effect (hereinafter addressing) by saturable reactor, in above-mentioned middle pincushion distortion correction circuit, the occasion that the combination inductance of level correction coil L1P～L4P flows through at the vertical yoke current IV top and the bottom of picture (just) is to strengthen, and reduces in the immobilising occasion of the vertical yoke current IV central portion of picture above-below direction (just) on the other hand.
Thereby, owing to reduce at picture upper and lower end parts S word correction effect, so the ordinate of picture left and right directions end strengthens at interval.On the contrary, owing to strengthen at picture above-below direction central portion S word correction effect, so the ordinate of picture left and right directions end reduces at interval.As a result, middle pincushion distortion is corrected.
Existing saturable reactor
The formation of the saturable reactor of＜prior art 〉
The signal outside drawing of the saturable reactor 101P of above-mentioned prior art shown in Figure 17 (end view and vertical view).In addition, the structure shown in Figure 17 is opened in the 2000-173497 communique open the Japan Patent spy.
In the saturable reactor 101P of prior art, level correction coil L1P～LAP twines on the 1P～4P unshakable in one's determination of online wheel shape, vertically revises on the 5P unshakable in one's determination of the online wheel of coil L5P winding shape.And the end face of 1P unshakable in one's determination, 2P is by the end face of 5P unshakable in one's determination, and the end face of 3P unshakable in one's determination, 4P is by another end face of 5P unshakable in one's determination.
In addition, the end face (the S utmost point) of single magnet 6P is simultaneously by both another end faces of 1P unshakable in one's determination, 2P, and the end face (the N utmost point) of single magnet 7P is simultaneously by both another end faces of 4P unshakable in one's determination, 5P.The magnetic field that magnet 6P, 7P take place is reverse (the S utmost point of two magnet 6P, 7P is towards the aggregate of 1P～5P unshakable in one's determination in the example of Figure 17) each other.
At this moment, as shown in the left figure (end view) of Figure 17, use the large-scale magnet of two 1P unshakable in one's determination of all standing, the such degree of 2P as magnet 6P.Specifically, the end face of two 1P unshakable in one's determination, 2P and magnet 6P is made circle, and the diameter sum of two 1P unshakable in one's determination, 2P is equivalent to the diameter of magnet.About magnet 7P is same with magnet 6P also.
And then as shown in the end view of Figure 17, it is the magnetic shield plate 24P and the maintenance frame 25P of semi arch that the saturable reactor 101P of prior art has section, and magnetic shield plate 24P covers at least a portion of saturable reactor 101P periphery.And, whether the saturable reactor of the structure of magnetic shield plate 24P is also arranged.
The effect of＜existing saturable reactor 〉
Be used for illustrating the schematic diagram of saturated/unsaturated state of each 1P～5P unshakable in one's determination of the saturable reactor 101P of prior art shown in Figure 18.
Figure 18 represents that with horizontal yoke current IH be transverse axis and be the coordinate plane of the longitudinal axis with vertical yoke current IV, transverse axis corresponding to the CRT picture laterally and the longitudinal axis corresponding to picture vertically.9 marks among Figure 18 (forming by 5 rectangles respectively) expressions to the corresponding picture of the shown position of each mark on position each 1P～5P unshakable in one's determination of carrying out the occasion saturable reactor 101P of deflection be in saturation condition or unsaturated state.Moreover, represent to be in the iron core of unsaturated state and represent to be in the iron core of saturation condition with black rectangle with white rectangle.
At first, (IH=0, IV=0), 1P～4P unshakable in one's determination is all saturated because of the magnetic field (hereinafter referred to as ' bias field ') that magnet 6P, 7P take place in the occasion to the deflection of picture central authorities.
(IH=min, IV=0), magnetic field and bias field that level correction coil L2P, L4P take place are reverse in the occasion to picture left end or the deflection of transverse axis left end.Therefore, 1P unshakable in one's determination, 3P are saturation condition, on the other hand, and the saturated releasing of 2P unshakable in one's determination, 4P.On the contrary, to the occasion of picture right-hand member or the deflection of transverse axis right-hand member (IH=max, IV=0), the saturated releasing of 1P unshakable in one's determination, 3P, 2P unshakable in one's determination, 4P become saturation condition.
In that (IH=0, IV=max), it is reverse vertically to revise the bias field that magnetic field that coil L5P takes place and magnet 7P cause to the occasion of picture upper end or longitudinal axis upper end deflection.Therefore, the saturated releasing of 3P unshakable in one's determination, 4P, 1P unshakable in one's determination, 2P become saturation condition.On the contrary, to the occasion of picture lower end or the deflection of longitudinal axis lower end (IH=0, IV=mim), the saturated releasing of 1P unshakable in one's determination, 2P, 3P unshakable in one's determination, 4P become saturation condition.
In the occasion to picture four bights (upper left, upper right, lower-left and bottom right) deflection, the state of each 1P～5P unshakable in one's determination is by level correction coil L1P～L4P, and the balance of vertically revising each magnetic field intensity that coil L5P and magnet 6P, 7P take place decides.In general, the intensity in above-mentioned each magnetic field is often set for as shown in Figure 18, become to the occasion of upper left and upper right deflection 1P～5P unshakable in one's determination with to the identical state of the occasion of upper end deflection, and to left down with the occasion iron core 1P～5P of bottom right deflection become with to the identical state of the occasion of lower end deflection.
Reduce owing to be wrapped in the inductance of the coil on the saturated iron core, so in the occasion to picture top (IV＞0) deflection, the inductance of level correction coil L1P, L2P becomes the inductance less than level correction coil L3P, L4P.Thereby, in the such circuit of the PQv of Figure 14 correction circuit constitutes, want big electric current to flow through the 1st current path (path that coil LH1, L2P, L1P are connected in series) than the 2nd current path (path that coil LH2, L4P, L3P are connected in series).On the contrary, Z is in the occasion to picture bottom (IV＜0) deflection, and the electric current bigger than the 1st current path flows through the 2nd current path.In addition, in the occasion to picture above-below direction central portion (IV=0) deflection, the split ratio in two paths equates.So, the split ratio that flows through the electric current of horizontal deflection coil LH1, LH2 changes with vertical cycle (antisymmetry ground) up and down.
In contrast, in the such circuit of the middle pincushion distortion correction circuit of Figure 16 constitutes, in occasion to picture top and the bottom (IV＞0, IV＜0) deflection, because the saturated releasing of two iron cores, so the combination inductance of level correction coil L1P～L4P strengthens.In contrast, in occasion, because the saturated releasing of two iron cores of end about only having reduces so mediate into inductance conversation structure top and the bottom fifty-fifty to picture central portion (IV=0) deflection.Thereby the combination inductance of level correction coil L1P～L4P changes with vertical cycle (up and down symmetrically).
101P in the saturable reactor of prior art all covers two 1P unshakable in one's determination, uses large-scale magnet to 2P both sides' degree as magnet 6P as mentioned above.Therefore, the magnetic field of the part (beating hatched part in reference to Figure 17) that is covered by 1P unshakable in one's determination, 2P in the middle of the section (the S utmost point) of magnet 6P can not effectively not utilized, and that is to say to think that the utilance in magnetic field of magnet 6P is low.Thereby, producing in order in 1P unshakable in one's determination, 2P, to provide the magnetic field of wanting and use more powerful magnet to make the necessity of magnet 6P, resultant costs improves.
And then, in the saturable reactor 101P of prior art, not by the track of the leakage contribution in the magnetic field of the part of above-mentioned 1P unshakable in one's determination, 2P covering and the opposing party's end face (the N utmost point), color misconvergence is taken place to the electron beam of CRT from magnet 6P.
Moreover, also exist the problem same about magnet 7P with magnet 6P.
Summary of the invention
The present invention proposes in view of such problem just, and its purpose is to provide a kind of and compares (efficient highland) supply bias field effectively with the saturable reactor 101P of prior art, and low from the stray field of magnetic pole, the saturable reactor that cost is also low.
The saturable reactor of the present invention the 1st aspect, comprise: the vertical correction coil that band is unshakable in one's determination, be configured to four level correction coils that band is unshakable in one's determination with above-mentioned vertical correction coil magnetic couplings, two in the middle of above-mentioned four level correction coils apply the 1st bias field supply unit that comprises two magnetic poles that polarity differs from one another that bias field is used, and in the middle of above-mentioned four level correction coils all the other two apply the 2nd bias field supply unit that comprises two magnetic poles that polarity differs from one another that bias field is used.
Saturable reactor in the present invention the 2nd aspect, be in the saturable reactor described in the claim 1, the the above-mentioned the 1st and/or the 2nd bias field supply unit comprises: the 1st magnet that the 1st central magnetic pole of above-mentioned two magnetic poles is arranged, with the 2nd magnet that the 2nd magnetic pole in the middle of above-mentioned two magnetic poles is arranged, above-mentioned the 1st magnet has 3rd magnetic pole opposite with above-mentioned the 1st pole polarity, above-mentioned the 2nd magnet has 4th magnetic pole opposite with above-mentioned the 2nd pole polarity, and the above-mentioned the 1st and/or the 2nd bias field supply unit also comprises the closed magnetic member of above-mentioned the 4th magnetic pole magnetic couplings of above-mentioned the 3rd magnetic pole of above-mentioned the 1st magnet and above-mentioned the 2nd magnet.
Saturable reactor in the present invention the 3rd aspect is that above-mentioned closed magnetic member comprises electromagnetism steel member in the saturable reactor in aspect the present invention the 2nd.
Saturable reactor in the present invention the 4th aspect is aspect the present invention the 2nd or the present invention the 3rd aspect in saturable reactor in, above-mentioned closed magnetic member has spring.
Saturable reactor in the present invention the 5th aspect is aspect the present invention the 1st in the saturable reactor to the present invention the 4th aspect, and the above-mentioned the 1st and/or the 2nd bias field supply unit comprises the 3rd single magnet with above-mentioned two magnetic poles.
Brief description of drawings
Fig. 1 is the signal outside drawing according to the saturable reactor of the 1st embodiment.
Fig. 2 is the schematic diagram that is used for illustrating according to the bias field in the saturable reactor of the 1st embodiment.
Fig. 3 is the schematic diagram that is used for illustrating according to the saturated/unsaturated state of each iron core of the saturable reactor of the 1st embodiment.
Fig. 4 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Fig. 5 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Fig. 6 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Fig. 7 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Fig. 8 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Fig. 9 is the schematic diagram that is used for illustrating according to the magnetic field in the saturable reactor of the 1st embodiment.
Figure 10 is the signal outside drawing according to another saturable reactor of the 1st embodiment.
Figure 11 is the signal outside drawing according to the saturable reactor of the 2nd embodiment.
Figure 12 is the signal outside drawing according to the saturable reactor of the 3rd embodiment.
Figure 13 is the schematic diagram that is used for illustrating vertical direction color misconvergence (PQv).
Figure 14 is the circuit diagram that is used for illustrating the PQv correction circuit of prior art.
Figure 15 is the schematic diagram of pincushion distortion (pincushion distortion) in the middle of being used for illustrating.
Figure 16 is the circuit diagram that is used for illustrating the middle pincushion distortion correction circuit of prior art.
Figure 17 is the signal outside drawing of the saturable reactor of prior art.
Figure 18 is the schematic diagram of saturated/unsaturated state of each iron core that is used for illustrating the saturable reactor of prior art.
Among the figure, 1～5: iron core, 10: the 1 bias field supply units, 11,21: the 1 magnet, 12,22: the 2 magnet, 13,23:U font magnet (the 3rd magnet), 14,15,24,25 closed magnetic members, 20: the 2 bias field supply units, 101～104: saturable reactor, Bm: bias field, L1～L4: level correction coil, L5: vertically revise coil.
The concrete mode that carries out an invention
＜the 1 embodiment 〉
According to the signal outside drawing (end view and vertical view) of the saturable reactor 101 of the 1st embodiment, be used for illustrating the schematic diagram of bias field (magnetic fields that magnet 11,12,21, the 22 described later takes place) Bm in the saturable reactor 101 shown in Fig. 2 shown in Fig. 1.
In detail, unshakable in one's determination 1～5 makes for example line wheel shape or cydariform, twines the vertical coil L5 that revises on unshakable in one's determination 5, and this twines horizontal modified line circle L1 on external unshakable in one's determination 1, twines horizontal modified line circle L2～L4 respectively equally on unshakable in one's determination 2～4.Four level correction coil L1～L4 be configured to with vertical correction coil L5 magnetic couplings unshakable in one's determination.Specifically, an end face of unshakable in one's determination 1,3 is contacted with an end face of unshakable in one's determination 5, and an end face of unshakable in one's determination 2,4 is contacted with another end face of unshakable in one's determination 5.Moreover unshakable in one's determination 1～5 end face is for for example circular.
The 1st magnet 11 makes the S utmost point (or the 1st magnetic pole) be contacted with another end face ground configuration of iron core 1, and the 2nd magnet 12 makes the N utmost point (or the 2nd magnetic pole) be contacted with another end face ground configuration of iron core 3.At this moment, the bias field Bm that sends from the N utmost point of the 2nd magnet 12 forms successively this closed magnetic circuit of the S utmost point (closed loop) that enters the 1st magnet 11 by unshakable in one's determination 3, unshakable in one's determination 5 and unshakable in one's determination 1.
Particularly, closed magnetic member 14 is the S utmost point (or the 4th magnetic pole) magnetic couplings of the N utmost point of the 1st magnet 11 (or the 3rd magnetic pole) with the 2nd magnet 12.Specifically, the yoke plate be made up of magnetic of closed magnetic member 14 constitutes.At this moment, form, closed magnetic member 14,24 can be provided thus at low cost, thereby saturable reactor 101 is provided at low cost as the electromagnetism steel band of above-mentioned magnetic with cheapnesss such as for example silicon steel plates.
Closed magnetic member 14 for example is base material with the ribbon-shaped members, have the both ends of this ribbon-shaped members are folded into the shape of U font (for example such shape of the staple that is in case of bending after the bound paper) substantially, because this shape, closed magnetic member 14 has spring action or spring.And closed magnetic member 14 makes the both ends of above-mentioned bending be contacted with the S polar region configuration of the N utmost point and the 2nd magnet 12 of the 1st magnet 11 respectively.Thus, the bias field Bm that sends from the N utmost point of the 1st magnet 11 forms this closed magnetic circuit of the S utmost point that enters the 2nd magnet 12 by closed magnetic member 14.
Equally, the 1st magnet 21 makes the S utmost point (or the 1st magnetic pole) be contacted with another end face ground configuration of iron core 4, and the 2nd magnet 22 makes the N utmost point (or the 2nd magnetic pole) be contacted with another end face ground configuration of iron core 2.At this moment, the bias field Bm that sends from the N utmost point of the 2nd magnet 22 forms successively this closed magnetic circuit of the S utmost point that enters the 1st magnet 21 by unshakable in one's determination 2, unshakable in one's determination 5 and unshakable in one's determination 4.
Particularly, closed magnetic member 24 is the S utmost point (or the 4th magnetic pole) magnetic couplings of the N utmost point of the 1st magnet 21 (or the 3rd magnetic pole) with the 2nd magnet 22.Closed magnetic member 24 has the material shape same with above-mentioned closed magnetic member 14, makes the both ends of closed magnetic member 24 be contacted with the S polar region configuration of the N utmost point and the 2nd magnet 22 of the 1st magnet 21 respectively.Thus, the bias field Bm that sends from the N utmost point of the 1st magnet 21 forms this closed magnetic circuit of the S utmost point that enters the 2nd magnet 22 by closed magnetic member 24.
So in saturable reactor 101, two magnet 11,12 that closed magnetic member 14 is configured in facing to the opposite on unshakable in one's determination 5 the same end face are provided with, and same closed magnetic member 24 is provided with facing to two magnet 21,22.
Moreover the N utmost point of magnet 11,12,21,22 and the end face of the S utmost point are made with another above-mentioned end face (facing to the end face of magnet 11,12,21,22) same degree of unshakable in one's determination 1～4 or less than their circle of size.In addition, the magnetic pole that magnet 11,22 is configured to opposed polarity in the example of Fig. 1 is opposed via unshakable in one's determination 5, and magnet 12,21 is similarly disposing.
In saturable reactor 101, the formation that comprises the 1st and the 2nd magnet 11,12 and closed magnetic member 14 is equivalent to the 1st bias field supply unit 10, and the formation that comprises the 1st and the 2nd magnet 21,22 and closed magnetic member 24 is equivalent to the 2nd bias field supply unit 20.
If with saturable reactor 101, then on each of four level correction coil L1～L4, be provided with magnetic pole (the N utmost point or the S utmost point).Therefore, different with the saturable reactor 101P of the prior art of Figure 17, can use with the end face same degree of level correction coil L1～L4 or less than their magnetic pole of size.That is to say, can constitute four magnetic poles with the magnet more small-sized than the saturable reactor 101P of prior art.
Thereby (efficient highland) in other words supplies with bias field Bm to level correction coil L1～L4 to iron core 1～4 effectively.And then, can reduce leakage field from magnetic pole, the result can reduce result from leakage field color misconvergence and improve the display quality of CRT.And then the utilization by small-sized magnet can reduce cost.
In addition, can suppress leakage by closed magnetic member 14,24 from the magnetic field of the S utmost point of the N utmost point of the 1st magnet 11,21 and the 2nd magnet 12,22.Thus, can reduce result from leakage field color misconvergence and improve the display quality of CRT.
And then, if with the above-mentioned closed magnetic circuit (only forming) that comprises closed magnetic member 14,24, then to compare with the occasion that the such magnetic circuit of saturable reactor 101P of the prior art that does not have closed magnetic member comprises air by magnetic, the magnetic circuit resistance reduces.Therefore, promptly use magnetic force than the more weak magnet of the occasion of not establishing closed magnetic member 14,24, also can obtain making the saturated magnetic flux density of iron core 1～5 of level correction coil L1～L4 as magnet 11,12,21,22.Thereby the utilization by this weak magnet can reduce cost.
In addition, closed magnetic member 14,24 by spring as the pressing plate that is configured in the parts such as iron core 1～5 in the retainer 30 play a role (by and the electrode that is located at the dry cell retainer on for example general various machines as the same effect of dry cell pressing plate performance).At this moment, strain by closed magnetic member 14,24, can absorb the dimensional discrepancy (deviation in specifically unshakable in one's determination 1,3, unshakable in one's determination 5 and unshakable in one's determination 2,4 the orientation (left and right directions among Fig. 1)) of each part in the retainer 30, in other words as overall Accumulated deviation.Thus, can relax dimensional discrepancy for example unshakable in one's determination management or with quality management such as the corresponding grouping of this deviation, improve and make efficient or productivity ratio.
Moreover the magnetic shield 24P (with reference to Figure 17) of the saturable reactor 101P of prior art can not form closed magnetic circuit between magnet 6P, 7P.Thereby magnetic shield 24P can not realize the effect of the inhibition leakage field that closed magnetic member 14,24 is such.
And say that saturable reactor 101 (and saturable reactor described later 102～104) can replace the PQv correction circuit of Figure 14 that the saturable reactor 101P of prior art applies to state and the middle pincushion distortion correction circuit of Figure 16.Specifically, make level correction coil L1～IA and vertical correction coil L5 correspond respectively to coil L1P～L4P and the coil L5P of the saturable reactor 101P of prior art, can apply to foregoing circuit thus.Moreover, comparison diagram 1 and Figure 17 as can be seen, level correction coil L1～L4 and unshakable in one's determination 1～4 allocation position are different among the saturable reactor 101P of saturable reactor 101 and prior art.
In saturable reactor 101, magnet 11,12,21,22 is to unshakable in one's determination 1～4, thereby supplies with bias field Bm to level correction coil L1～L4.At this moment, magnet 11,22 (in the vertical view of Fig. 1) forms unidirectional bias field Bm, and on the other hand, magnet 12,21 forms and above-mentioned magnet 11,22 rightabout bias field Bm (with reference to Fig. 2).In addition, in saturable reactor 101, the direction of winding of coil L1～L4 or the sense of current that flows through coil L1～L4 are set like this, so that unidirectional magnetic field takes place for level correction coil L1, L4 (in the vertical view of Fig. 1) and level correction coil L2, L3 take place and above-mentioned coil L1, the rightabout magnetic field of L4.Under this formation was set, saturable reactor 101 action effects were as follows.
Here, be used for illustrating the schematic diagram of saturated/unsaturated state of each iron core 1～5 of saturable reactor 101 shown in Fig. 3, Fig. 4～Fig. 9 illustrates the schematic diagram in the magnetic field that produces in each the locational saturable reactor 101 that is used for illustrating on the picture.Moreover, in Fig. 4～Fig. 9, omitted the diagram of retainer 30.
Fig. 3 represents to be transverse axis and to be the coordinate plane of the longitudinal axis with vertical yoke current IV with horizontal yoke current IH, transverse axis corresponding to the screen of CRT or picture laterally and the longitudinal axis corresponding to picture vertically.9 marks among Fig. 3 (forming by 5 rectangles respectively) be illustrated in electron beam to the corresponding picture of the shown position of each mark on each iron core 1～5 of occasion saturable reactor 101 of location deflection be in saturation condition or unsaturated state.Moreover, represent to be in the iron core of unsaturated state and the iron core of representing to be in saturation condition with the rectangle of black with the rectangle of white.
At first, at the occasion (IH=0 of electron beam to the deflection of picture central authorities, IV=0), because all do not have electric current to flow through in any one of level correction coil L1～L4 and vertical correction coil L5, in unshakable in one's determination 1～4, only acting on the bias field Bm that magnet 11,12,21,22 takes place as shown in Figure 4.At this moment, unshakable in one's determination 1～4 is all saturated.
At occasion (IH=min to picture left end or the deflection of transverse axis left end, IV=0), as shown in Figure 5, the bias field Bm that magnetic field B h that level correction coil L1, L3 take place and magnet 11,12 take place is same direction, otherwise the bias field Bm that magnetic field B h that level correction coil L2, L4 take place and magnet 22,21 take place is a rightabout.Therefore, unshakable in one's determination 1,3 is saturation condition, on the contrary unshakable in one's determination 2,4 saturated releasing (becoming unsaturated state).
Otherwise, at occasion (IH=max to picture right-hand member or the deflection of transverse axis right-hand member, IV=0), as shown in Figure 6, the bias field Bm that magnetic field B h that level correction coil L1, L3 take place and magnet 11,12 take place is a rightabout, otherwise the bias field Bm that magnetic field B h that level correction coil L2, L4 take place and magnet 22,21 take place is same direction.Therefore, unshakable in one's determination 1,3 saturated releasing, unshakable in one's determination 2,4 become saturation condition.
At occasion (IH=0 to picture upper end or longitudinal axis upper end deflection, IV=max), as shown in Figure 7, vertically revising coil L5 magnetic field B v that takes place and the bias field Bm that magnet 11,22 takes place is same direction, on the contrary with the bias field Bm of magnet 12,21 generations be rightabout.Therefore, unshakable in one's determination 3,4 saturated releasing, unshakable in one's determination 1,2 become saturation condition.
Otherwise, to the occasion of picture lower end or the deflection of longitudinal axis lower end (IH=0, IV=min), as shown in Figure 8, the bias field Bm that magnetic field B v that vertical correction coil L5 takes place and magnet 11,22 take place is a rightabout, and the bias field Bm that takes place with magnet 12,21 is same direction.Therefore, unshakable in one's determination 1,2 saturated releasing, unshakable in one's determination 3,4 become saturation condition.
(IH=min IV=max) can regard the coincidence (with reference to Fig. 9) of the two states of above-mentioned occasion to picture left end and picture upper end deflection as to the occasion of the upper left deflection of picture.In this occasion, saturated/unsaturated state of unshakable in one's determination 1～4 is by magnet 11,12,21,22, and level correction coil L1～L4 determines with the intensity balance in each magnetic field that vertical correction coil L5 takes place.
In saturable reactor 101, the turn ratio of each coil L1～L5 is adjusted like this, so that a little a little less than the magnetic field B v of the magnetic field B h that level correction coil L1～L4 takes place than vertical correction coil L5 generation.More particularly, above-mentioned turn ratio is adjusted to the degree of revising the effect of the magnetic field B h that occasion that magnetic field B v that coil L5 causes works can ignorance level correction coil L1～L4 causes vertical.
Thereby, can regard the state that approaches to the occasion of picture upper end deflection as to the state of the iron core 1～5 of the occasion of the upper left deflection of picture.That is to say, unshakable in one's determination 3,4 saturated releasing, unshakable in one's determination 1,2 become saturation condition.
In addition, to the occasion of the upper right deflection of picture (IH=max, IV=max) in saturated/unsaturated state of unshakable in one's determination 1～4 be same also with occasion to picture upper end and upper left deflection.
Equally, to the occasion of picture lower-left deflection (IH=min, IV=min) and to the occasion of picture bottom right deflection (IH=max, IV=min) in saturated/unsaturated state of unshakable in one's determination 1～4 be same with occasion to the deflection of picture lower end.That is to say, unshakable in one's determination 1,2 saturated releasing, unshakable in one's determination 3,4 become saturation condition.
So, if comparison diagram 1 and Figure 17 (still, unshakable in one's determination 1～4 allocation position difference) as can be seen, those of the saturated/unsaturated state of the iron core 1～4 of saturable reactor 101 and the saturable reactor 101P of prior art are identical.
, in the saturable reactor 101 of Fig. 1, also can be opposed the magnetic pole that four magnet 11,12,21,22 are configured to same polarity via iron core 5.For example, also can make the magnetic pole upset (with reference to Fig. 1 and Figure 10 described later) of each magnet 21,22 of saturable reactor 101.
At this moment, the bias field that supplies to level correction coil L2, L3 in making the saturable reactor 101 of magnetic pole upset like this becomes same direction.In addition, as mentioned above, direction of winding etc. are set level correction coil L2, L3 for unidirectional magnetic field are taken place.Therefore, in the saturable reactor 101 of modification as mentioned above, can utilize level correction coil L2, L3 as equivalence element on the circuit.
In view of this point, the saturable reactor 102 shown in the signal outside drawing of Figure 10 (end view and vertical view) can replace the PQv correction circuit of Figure 14 that the saturable reactor 101P of prior art applies to state and the middle pincushion distortion correction circuit of Figure 16.Saturable reactor 102 is equivalent in the saturable reactor 101 of modification as mentioned above coil L2 as coil IA and coil L4 as coil L2, and then the formation that magnet 22 is used as magnet 22 as magnet 21 and magnet 21.
Even constitute like this, also can obtain the effect same with the saturable reactor 101 of Fig. 1.
＜the 2 embodiment 〉
Shown in Figure 11 according to the signal outside drawing (end view and vertical view) of the saturable reactor 103 of the 2nd embodiment.Compare Figure 11 and Fig. 1 as can be seen, saturable reactor 103 replaces the closed magnetic member 14,24 of the saturable reactor of having stated 101, has closed magnetic member 15,25.Iron core 1～5 in saturable reactor 103, the configuration and the saturable reactor 101 of coil L1～L5 and magnet 11,12,21,22 and retainer 30 are same.
In detail, closed magnetic member 15,25 is taken as U font substantially, results from this shape and has spring action or spring.Moreover closed magnetic member 15,25 is by making with the same material of the closed magnetic member stated 14,24.And, two wrist clampings the 1st magnet 11 of the above-mentioned U font of closed magnetic member 15 usefulness, the 1,5,2 and the 2nd magnet 22 unshakable in one's determination, two wrist clampings the 2nd magnet 12 of the above-mentioned U font of same closed magnetic member 25 usefulness, the 3,5,4 and the 1st magnet 21 unshakable in one's determination.That is to say, in saturable reactor 103,, for two magnet 12,21 closed magnetic member 25 is set equally for closed magnetic member 15 being set via 5 opposed two magnet 11,22 unshakable in one's determination.
Thereby in saturable reactor 103, the S utmost point of the N utmost point of the 1st magnet 11 and the 2nd magnet 22 is by closed magnetic member 15 magnetic couplings, and the S utmost point of the N utmost point of the 1st magnet 21 and the 2nd magnet 12 is by closed magnetic member 25 magnetic couplings.
Moreover, in saturable reactor 103, the formation that comprises the 1st and the 2nd magnet 11,22 and closed magnetic member 15 is equivalent to the 1st bias field supply unit 10, and the formation that comprises the 1st and the 2nd magnet 21,12 and closed magnetic member 25 is equivalent to the 2nd bias field supply unit 20.
If with saturable reactor 103 then can obtain the effect same with the saturable reactor stated 101.Particularly, closed magnetic member 15,25 has the band-like portions (bottom of U font that closed magnetic member 15,25 form) longer than the closed magnetic member stated 14,24.Because the band-like portions easy deformation that this is long is so closed magnetic member 15,25 springs are bigger.Thereby, obtain resulting from the effect of having stated of spring more significantly.
＜the 3 embodiment 〉
Shown in Figure 12 according to the signal outside drawing (end view and vertical view) of the saturable reactor 104 of the 3rd embodiment.Compare Figure 12 and Fig. 1 as can be seen, saturable reactor 104 replaces the magnet 11,12,21,22 and the closed magnetic member 14,24 of the saturable reactor of having stated 101, has the single U font magnet (or the 3rd magnet) 13,23 of the N utmost point and two magnetic poles of the S utmost point.Moreover, iron core 1～5 in saturable reactor 104, the configuration and the saturable reactor 101 of coil L1～L5 and retainer 30 are same.
In detail, U font magnet 13 makes the S utmost point be contacted with above-mentioned another end face of unshakable in one's determination 1 and makes the N utmost point be contacted with above-mentioned another end face ground configuration of iron core 3.Equally, U font magnet 23 makes the S utmost point be contacted with above-mentioned another end face of unshakable in one's determination 4 and makes the N utmost point be contacted with above-mentioned another end face ground configuration of iron core 2.Thus, U font magnet 13,23 is to unshakable in one's determination 1～4, thereby supplies with bias field Bm to level correction coil L1～L4.
Moreover in saturable reactor 104, U font magnet 13 is equivalent to the 1st bias field supply unit 10, and the formation that comprises U font magnet 23 is equivalent to the 2nd bias field supply unit 20.
If with saturable reactor 104, then part number and worker ordinal number have been reduced, so can improve manufacturing efficient owing to comparing with the saturable reactor 101～103 of using the closed magnetic member of having stated 14,15,24,25.
Moreover, also can for example become U font magnet 23 to the magnet 21,22 of saturable reactor 101 and closed magnetic member 24, altogether closed magnetic member and U font group of magnets.
The effect of invention
If use the invention of the 1st aspect according to the present invention, then in each of four level correction coils Be provided with magnetic pole. Therefore, with for example jointly be provided with single magnetic pole for two level correction coils The saturable reactor difference of prior art can be used with the end face same degree of level correction coil The magnetic pole of (or less than them) size. That is to say, can be with satisfying than above-mentioned prior art Consist of four magnetic poles with the more small-sized magnet of reactor. Thereby, effectively (efficient highland) Supply with bias field. And then, can reduce the leakage field from magnetic pole, the result can reduce cause In the color misconvergence of this leakage field and improve the display quality of CRT. And then, by small-sized magnet Utilization can reduce cost.
If use the invention of the 2nd aspect according to the present invention, then can suppress from the by the closed magnetic member The leakage in the magnetic field of the 3rd magnetic pole of 1 magnet and the 4th magnetic pole of the 2nd magnet. Thereby, can reduce Result from this leakage field color misconvergence and improve the display quality of CRT.
And then owing to compare with the occasion that the closed magnetic member is not set, the magnetic circuit resistance reduces, so namely Use the more weak magnet of magnetic force also can make the iron of level correction coil as the 1st and the 2nd magnet The heart is saturated. Thereby the utilization by weak magnet can reduce cost.
If use the invention of the 3rd aspect according to the present invention, then can provide at low cost the closed magnetic member with the electromagnetic steel member of cheapness, thereby saturable reactor is provided
If use the invention of the 4th aspect according to the present invention, the band iron core that then saturable reactor is being had The parts such as vertical correction coil are housed in the occasion in the retainer, can lean on the elasticity of closed magnetic member Distortion absorbs the dimensional discrepancy of each part, in other words as overall Accumulated deviation. Thus, Can relax the quality management of part, improve and make efficient. And then, can make the closed magnetic member For pressing plate plays a role.
If use the invention of the 5th aspect according to the present invention, then since with occasion phase with the closed magnetic member Than having reduced number of components and worker ordinal number, so can improve manufacturing efficient.
Claims (5)
1. saturable reactor is characterized in that comprising:
The vertical correction coil that band is unshakable in one's determination,
Be configured to and four of the above-mentioned vertical correction coil magnetic couplings level correction coils that band is unshakable in one's determination,
Two in above-mentioned four level correction coils apply the 1st bias field supply unit that comprises two magnetic poles that polarity differs from one another that bias field is used, and
All the other two in above-mentioned four level correction coils apply the 2nd bias field supply unit that comprises two magnetic poles that polarity differs from one another that bias field is used.
2. saturable reactor according to claim 1 is characterized in that:
The the above-mentioned the 1st and/or the 2nd bias field supply unit comprises: have the 1st magnet of the 1st magnetic pole in above-mentioned two magnetic poles and have the 2nd magnet of the 2nd magnetic pole in above-mentioned two magnetic poles, above-mentioned the 1st magnet has 3rd magnetic pole opposite with above-mentioned the 1st pole polarity, above-mentioned the 2nd magnet has 4th magnetic pole opposite with above-mentioned the 2nd pole polarity
The the above-mentioned the 1st and/or the 2nd bias field supply unit also comprises the closed magnetic member of above-mentioned the 4th magnetic pole magnetic couplings of above-mentioned the 3rd magnetic pole of above-mentioned the 1st magnet and above-mentioned the 2nd magnet.
3. saturable reactor according to claim 2 is characterized in that: above-mentioned closed magnetic member comprises electromagnetism steel member.
4. according to the saturable reactor described in the claim 2, it is characterized in that: above-mentioned closed magnetic member has spring.
5. saturable reactor according to claim 1 is characterized in that: the above-mentioned the 1st and/or the 2nd bias field supply unit comprises the 3rd single magnet with above-mentioned two magnetic poles.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001254632A JP2003070012A (en) | 2001-08-24 | 2001-08-24 | Saturable reactor |
| JP254632/2001 | 2001-08-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1402298A CN1402298A (en) | 2003-03-12 |
| CN1173380C true CN1173380C (en) | 2004-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB01139367XA Expired - Fee Related CN1173380C (en) | 2001-08-24 | 2001-11-21 | Saturated reactor |
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| Country | Link |
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| JP (1) | JP2003070012A (en) |
| KR (1) | KR100452896B1 (en) |
| CN (1) | CN1173380C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101714450B (en) * | 2009-12-23 | 2012-06-20 | 中国电力科学研究院 | Electrical design method of saturable reactor for direct current converter valve |
| CN101916309B (en) * | 2010-07-29 | 2012-11-28 | 中国电力科学研究院 | Design method for electric performance of saturable reactor for converter valve |
| CN101964238A (en) * | 2010-08-19 | 2011-02-02 | 河北华整实业有限公司 | Damping ring for magnetically saturated reactor |
| CN101930492B (en) * | 2010-08-20 | 2013-11-27 | 中国电力科学研究院 | Analytical model for saturable reactor for converter valve |
| CN101923593B (en) * | 2010-08-23 | 2013-02-06 | 中国电力科学研究院 | Performance analysis method of saturated reactor for converter valve in thyristor impedance state |
| CN101923594B (en) * | 2010-08-23 | 2013-01-02 | 中国电力科学研究院 | Method for analyzing performance of saturation reactor for converter valve under the condition of switching on thyristor |
| CN102136346A (en) * | 2011-01-19 | 2011-07-27 | 山东大学 | Saturable reactor main body |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS6345965U (en) * | 1986-09-12 | 1988-03-28 | ||
| JPH0818987A (en) * | 1994-06-30 | 1996-01-19 | Sony Corp | Convergence correcting device |
| KR100228437B1 (en) * | 1996-08-16 | 1999-11-01 | 구기훈 | Precision convergence system device |
| JP2000224434A (en) * | 1999-01-29 | 2000-08-11 | Sony Corp | Image distortion correction device |
-
2001
- 2001-08-24 JP JP2001254632A patent/JP2003070012A/en active Pending
- 2001-11-09 KR KR10-2001-0069629A patent/KR100452896B1/en not_active IP Right Cessation
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Also Published As
| Publication number | Publication date |
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| KR100452896B1 (en) | 2004-10-15 |
| JP2003070012A (en) | 2003-03-07 |
| CN1402298A (en) | 2003-03-12 |
| KR20030017291A (en) | 2003-03-03 |
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