CN101917630A - Calculation method of parameters of demagnetizing coil of color television set - Google Patents
Calculation method of parameters of demagnetizing coil of color television set Download PDFInfo
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- CN101917630A CN101917630A CN 201010236175 CN201010236175A CN101917630A CN 101917630 A CN101917630 A CN 101917630A CN 201010236175 CN201010236175 CN 201010236175 CN 201010236175 A CN201010236175 A CN 201010236175A CN 101917630 A CN101917630 A CN 101917630A
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Abstract
The invention relates to a calculation method of parameters of a demagnetizing coil of a color television set. The calculation method comprises the following steps of, firstly, determining the circumference of the demagnetizing coil according to the dimension of a CRT (Cathode Ray Tube) structure; then, determining the minimum required demagnetizing force and coil materials, selecting a thermistor and determining the resistance value and the minimum allowable operating voltage range of the demagnetizing coil in sequence; preliminarily calculating the parameters of the demagnetizing coil on the end with a lower allowable operating voltage range according to the parameters; adjusting the parameters to obtain an integral number of coil turns; adjusting the diameter of the coil to a value closest to a coil standard specification value; replacing the parameters to calculate final parameters of the demagnetizing coil; simultaneously changing the operating voltage into a parameter value of the demagnetizing coil on the end of with a higher allowable operating voltage range; and calculating the inrush current and the demagnetizing force parameters of the demagnetizing coil so that the final parameters of a demagnetizing coil sample can be obtained. The calculation method optimizes the restriction relation among the parameters of the demagnetizing coil, simplifies the calculation procedures, reduces the material cost, shortens the design period, and achieves the optimal use parameters of coil materials.
Description
Technical field:
The present invention relates to the anti-magnetized coil technical field, refer in particular to a kind of calculation method of parameters of demagnetizing coil of color television set.
Background technology:
Anti-magnetized coil is special purpose parts, important parts, the safety member of television set, also be valuable of television set, it directly has influence on technical indicator, quality level, the cost height of television set, very not rigorous by the estimation number of turn, estimation line method directly when the design anti-magnetized coil over the years, very not subject, be difficult to reach optimum efficiency.Particularly picture tube is wide in variety now, require the demagnetizing force of anti-magnetized coil to vary, overall dimension has the long weak point that has, cause the anti-magnetized coil kind to increase, the design work amount increases, and prolongs to carry out Design of Field Discharge Coil with former evaluation method and certainly will cause problems such as waste of material, cost increase, erasure effect are poor, inefficiency.
Summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, a kind of simple, practical calculation method of parameters of demagnetizing coil of color television set is provided.
For achieving the above object, technical scheme provided by the present invention is: calculation method of parameters of demagnetizing coil of color television set, and described calculation method of parameters of demagnetizing coil includes following steps:
First step:, determine degaussing coil girth (m) according to the CRT physical dimension.
Second step:, determine that minimum requires demagnetizing force (AT according to the CRT product specification book requirement of selecting for use
P-P).
Third step: select for use anti-magnetized coil to use copper material or aluminium by designing requirement.
The 4th step: by the selected thermistor resistance (Ω) of designing requirement.
The 5th step: the thermistor resistance (Ω) selected according to the 4th step, selective erase line resistance value (Ω), degaussing coil resistance (Ω) should be greater than 10 Ω in principle, and is suitable with thermistor resistance (Ω).
The 6th step: determine the minimum operating voltage range that allows of anti-magnetized coil.
The 7th step: under the condition that satisfies the requirement of CRT demagnetizing force, according to the parameter that first to the 6th step provides, primary Calculation goes out the parameters of demagnetizing coil that anti-magnetized coil allows the operating voltage range low side: coil turn, wire rod are directly through Φ (mm), inrush current (Ap-p).
The 8th step: adjust the 7th parameter that step calculates,, " wire rod is directly through Φ (mm) " value is adjusted to wire rod standard gauge scale value near it with the coil turn numerical value integer of the 7th step.
The 9th step: adjusted the 8th step parameter is replaced relevant parameters in the 7th step, and calculate final parameters of demagnetizing coil according to the computational methods of the 7th step.
The tenth step: change the operating voltage (V) of the 9th step into anti-magnetized coil permission operating voltage range high-end parameter value, and calculate " inrush current " and " demagnetizing force " parameter that anti-magnetized coil allows the high terminal voltage of operating voltage range.
The 11 step: put the data that the 9th, the tenth step is calculated in order, the final argument data of record anti-magnetized coil sample: degaussing coil resistance R
C(Ω), inrush current (Ap-p) (low side, high-end), demagnetizing force (ATp-p) (low side, high-end), degaussing coil length overall (m), wire rod volume (mm
3).
Inrush current (Ap-p) in described the 11 step is operating voltage range low side, high-end two parameters.
Demagnetizing force (ATp-p) in described the 11 step is operating voltage range low side, high-end two parameters.
The present invention is after having adopted such scheme, optimized restricting relation between each parameter of anti-magnetized coil, solved contradiction, simplification calculation procedure, the material cost that reduces, shortening design cycle between parameter, reached the use wire rod directly through best, anti-magnetized coil number of turn the best, demagnetizing force the best, cost is minimum, calculates the effect quick, accurate, that precision is high.
Embodiment:
Below the invention will be further described, preferred embodiment of the present invention is: the described calculation method of parameters of demagnetizing coil of color television set of present embodiment includes following steps: as requiring when the CRT product specification book that select for use and the designing requirement of anti-magnetized coil partial parameters is:
1,14 cun television sets, picture tube select for use the north pine to produce the A36LXE295X colored picture tube.
2, anti-magnetized coil is selected aluminium for use, degaussing coil girth (mm) 1080 ± 15.(shape of the mouth as one speaks winding)
3, thermistor resistance (Ω): 14 (Ω).
4, degaussing coil resistance (Ω) choosing: 14 (Ω).
5, supply voltage: 190VAC～242VAC.
6,190VAC requires demagnetizing force (AT
P-P): 1100 ± 10 ampere-turns.
7,242VAC inrush current: 25 ± 2Ap-p.
First step:, determine " degaussing coil girth (m) " according to the CRT physical dimension.
Second step: according to the requirement of CRT product specification book, selected minimum " requires demagnetizing force (AT
P-P) ",
Third step: select for use anti-magnetized coil to use copper material or aluminium by designing requirement.
The 4th step: by designing requirement selected " thermistor resistance (Ω) ".
The 5th step: " thermistor resistance (Ω) " selected according to the 4th step, selected " degaussing coil resistance (Ω) " value, " degaussing coil resistance (Ω) " should be greater than 10 Ω in principle, and be suitable with " thermistor resistance (Ω) ",
The 6th step: determine the minimum operating voltage range that allows of anti-magnetized coil.
The 7th step: under the condition that satisfies the requirement of CRT demagnetizing force, the parameter that provides according to first to the 6th step, primary Calculation goes out the parameters of demagnetizing coil that anti-magnetized coil allows the operating voltage range low side: " coil turn ", " wire rod is directly through Φ (mm) ", " inrush current (Ap-p) ", and described CALCULATION OF PARAMETERS formula is:
Wire rod volume=π * gauge or diameter of wire
2* degaussing coil girth * coil turn ÷ 4
It should be noted that: when selecting copper material for use K=0.0179, when selecting aluminum material for use K=0.0280.According to above anti-magnetized coil parameter subfunction equation, use Excel software design computational chart:
1, be the example design schedule to select copper material for use: in computational chart C5, D5, E5, F5, G5 column input known variables; In computational chart C11, the adjusted parameter of D11 column input computational chart.
2, be the example design schedule to select copper material for use: at C8, D8, E8, F8, G8, G11, C14, D14, E14, F14, G14 form input function, as follows respectively:
(1) coil turn is just calculated the result in C8 form input "=(G5* (D5+E5))/(C5*2*sqrt (2)) "
(2) gauge or diameter of wire is just calculated the result and is imported at the D8 form; "=sqrt ((0.0179*F5*C8*4)/(PI () * 1000*E5)) "
(3) the degaussing coil resistance value is just calculated the result and is imported at the E8 form; "=(0.0179*F5*C8*4)/(PI () * D8^2*1000) "
(4) inrush current is just calculated the result in F8 form input "=(C5*2*sqrt (2))/(D5+E5) "
(5) demagnetizing force is just calculated the result in G8 form input "=(C5*2*sqrt (2) * C8)/(D5+E5) "
(6) wire rod volume calculation result is in G11 form input "=(PI () * D11^2*F5*C11)/4 "
(7) degaussing coil resistance value final result is in C14 form input "=(0.0179*F5*C11*4)/(PI () * D11^2*1000) "
(8) the inrush current final calculation result is in D14 form input "=(C5*2*sqrt (2))/(D5+E8) "
(9) the demagnetizing force final result is in E14 form input "=(C5*2*sqrt (2) * C11)/(D5+E8) "
(anti-magnetized coil shape of the mouth as one speaks winding)
(10) demagnetization ability final result is in F14 form input "=2* (C5*2*sqrt (2) * C11)/(D5+E8) "
(anti-magnetized coil 8 font windings)
(11) degaussing coil length overall result is in G14 form input "=F5*C11/1000 "
3, the calculating of aluminium anti-magnetized coil and copper material anti-magnetized coil difference is exactly the calculating of " gauge or diameter of wire " and " degaussing coil resistance value ":
(1) the first result of calculation of gauge or diameter of wire is in D8 form input "=sqrt ((0.0280*F5*C8*4)/(PI () * 1000*E5)) "
(2) the degaussing coil resistance value is just calculated the result in E8 form input "=(0.0280*F5*C8*4)/(D5+E5) "
(3) degaussing coil resistance value final result is in C14 form input "=(0.0280*F5*C11*4)/(PI () * D11^2*1000) "
4, in form C5, D5, E5, F5, G5, C11, D11 be made as and allow user's editing area, other form is made as and does not allow user's editing area, avoids having changed because of carelessness formula and causes and make mistakes.
One, utilization aluminium parameters of demagnetizing coil computational chart
Two, input known parameters
1, input service voltage (V) 190; (low-voltage should satisfy the demagnetizing force requirement)
2, input thermistor (Ω) 14;
3, input degaussing coil resistance (Ω); (general all suitable with the thermistor resistance of selecting for use, this coil estimated value is 14)
4, input degaussing coil girth (mm) 1080; (surveying 14 cun colored picture tube anti-magnetized coil internal diameters)
5, input requires demagnetizing force (ATp-p) 1100; (14 cun colored picture tube specifications parameter requests 1000)
6, click the acknowledgement key computational chart and show following result of calculation; (parameters such as the number of turn and line footpath)
7, computational chart " is just calculated the result " and is shown: guaranteeing demagnetizing force (ATp-p) 1100, wire rod volume (mm
3) 7665.765031, under the condition, coil turn is 57.31286542, and gauge or diameter of wire (Φ) is 0.397095418, and this calculating parameter is a canonical parameter.
8, guaranteeing demagnetizing force, under the wire rod volume minimal condition.Just calculate the coil turn that the result shows, gauge or diameter of wire Φ (mm) is the canonical parameter proof list
Find out by above tabulation: the calculated value that computational chart provides is a standard value, gauge or diameter of wire Φ (mm), and the anti-magnetized coil number of turn has change slightly, will cause demagnetizing force deficiency or material volume to increase.
The 8th step: at the beginning of " coil turn " value (integer) of calculating be 56, at the beginning of calculate " wire rod is directly through Φ (mm) " value and adjust to (Φ) (mm) 0.4, insert in " adjusting input " corresponding column, click acknowledgement key, " final result " shows below table:
The 9th step: " final result " of record anti-magnetized coil:
(1) " degaussing coil resistance R
CBe 13.48 (Ω) ";
(2) " inrush current (Ap-p) " is 19.55 (during 190VAC);
(3) " demagnetizing force (ATp-p) " is 1095.86
(4) " degaussing coil length overall (m) " is 60.48;
(5) " wire rod volume (mm
3) " be 7600.14..
Annotate: during 190VAC, demagnetizing force 1095.86ATp-p meets design requirement.
The tenth step: input service voltage (V) 242VAC.(high-end inrush current, the demagnetizing force of checking anti-magnetized coil operating voltage range)
Annotate: during 242VAC, inrush current is 24.90Ap-p, meets design requirement.
The 11 step: " final result " and this parameters of demagnetizing coil design load of 242VAC inrush current certificate parameter of providing according to computational chart are defined as:
(1) degaussing coil girth (mm) 1080mm.
(2) degaussing coil resistance R
C(Ω) 13.48.
(3) coil turn 56.
(4) gauge or diameter of wire Φ (mm) 0.40.
(5) degaussing coil length overall (m) 60.48.
(6) wire rod volume (mm
3) 7600.
(7) 190VAC demagnetizing force (ATp-p) 1095.1, inrush current (Ap-p) 19.55.
(8) 242VAC demagnetizing force (ATp-p) 1394.8, inrush current (Ap-p) 24.90.
Can carry out sample production after the data preparation countersign with the 11 step.After adopting such scheme, only need during use insert this computational chart input field to the anti-magnetized coil known parameters, click acknowledgement key, just can calculate all parameters of anti-magnetized coil and be presented on the computer screen, reached quick, accurate, high-precision effect.
The embodiment of the above only is the present invention's preferred embodiment, is not to limit practical range of the present invention with this, so the variation that all shapes according to the present invention, principle are done all should be encompassed in protection scope of the present invention.
Claims (3)
1. calculation method of parameters of demagnetizing coil of color television set, it is characterized in that: described calculation method of parameters of demagnetizing coil includes following steps:
First step:, determine the degaussing coil girth according to the CRT physical dimension;
Second step:, determine that minimum requires demagnetizing force according to the CRT product specification book requirement of selecting for use;
Third step: select for use anti-magnetized coil to use copper material or aluminium by designing requirement;
The 4th step: by the selected thermistor resistance of designing requirement;
The 5th step: the thermistor resistance selected according to the 4th step, determine the degaussing coil resistance value, the degaussing coil resistance should be greater than 10 Ω in principle, and is suitable with the thermistor resistance;
The 6th step: determine the minimum operating voltage range that allows of anti-magnetized coil;
The 7th step: under the condition that satisfies the requirement of CRT demagnetizing force, according to the parameter that first to the 6th step provides, primary Calculation goes out the parameters of demagnetizing coil that anti-magnetized coil allows the operating voltage range low side: coil turn, wire rod are directly through Φ, inrush current;
The 8th step: adjust the parameter that the 7th step is calculated,, wire rod is directly adjusted to wire rod standard gauge scale value near it through the Φ value with the coil turn numerical value integer of the 7th step;
The 9th step: adjusted the 8th step parameter is replaced relevant parameters in the 7th step, and calculate final parameters of demagnetizing coil according to the computational methods of the 7th step;
The tenth step: change the operating voltage of the 9th step into anti-magnetized coil permission operating voltage range high-end parameter value, and calculate the inrush current and the demagnetizing force parameter of anti-magnetized coil;
The 11 step: put the data that the 9th, the tenth step is calculated in order, the final argument data of record anti-magnetized coil sample: degaussing coil resistance, inrush current, demagnetizing force, degaussing coil length overall, wire rod volume.
2. calculation method of parameters of demagnetizing coil of color television set according to claim 1 is characterized in that: the inrush current in described the 11 step is operating voltage range low side, high-end two parameters.
3. calculation method of parameters of demagnetizing coil of color television set according to claim 1 is characterized in that: the demagnetizing force in described the 11 step is operating voltage range low side, high-end two parameters.
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| CN2010102361754A CN101917630B (en) | 2010-07-23 | 2010-07-23 | Calculation method of parameters of demagnetizing coil of color television set |
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| CN2010102361754A CN101917630B (en) | 2010-07-23 | 2010-07-23 | Calculation method of parameters of demagnetizing coil of color television set |
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| CN101917630B CN101917630B (en) | 2012-10-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878095A (en) * | 2018-09-01 | 2018-11-23 | 浙江行雨网络科技有限公司 | A kind of dynamic degaussing gear of unattended supermarket self-help settlement commodity |
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| CN1099214A (en) * | 1993-03-12 | 1995-02-22 | 法国汤姆森电视元件(公司) | The manufacture method of anti-magnetized coil and the coil that obtains of method thus |
| CN1244086A (en) * | 1998-07-31 | 2000-02-09 | 深圳市新开达电子有限公司 | Demagnetizing coil for kinescope and its making method |
| EP1137291A2 (en) * | 2000-03-23 | 2001-09-26 | Micronas Munich GmbH | Degaussing circuitry |
| CN2720746Y (en) * | 2004-08-05 | 2005-08-24 | 唐永娣 | Double-ring 8-shape anti-magnetic coil |
-
2010
- 2010-07-23 CN CN2010102361754A patent/CN101917630B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2139332Y (en) * | 1992-10-30 | 1993-07-28 | 中国科学院电子学研究所 | Demagnetizing coil |
| CN1099214A (en) * | 1993-03-12 | 1995-02-22 | 法国汤姆森电视元件(公司) | The manufacture method of anti-magnetized coil and the coil that obtains of method thus |
| CN1244086A (en) * | 1998-07-31 | 2000-02-09 | 深圳市新开达电子有限公司 | Demagnetizing coil for kinescope and its making method |
| EP1137291A2 (en) * | 2000-03-23 | 2001-09-26 | Micronas Munich GmbH | Degaussing circuitry |
| CN2720746Y (en) * | 2004-08-05 | 2005-08-24 | 唐永娣 | Double-ring 8-shape anti-magnetic coil |
Non-Patent Citations (1)
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| 《电子工艺技术》 20010331 赵洋等 消磁线圈的设计 74-76 1-3 第22卷, 第2期 2 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108878095A (en) * | 2018-09-01 | 2018-11-23 | 浙江行雨网络科技有限公司 | A kind of dynamic degaussing gear of unattended supermarket self-help settlement commodity |
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