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Phone: 13928159753
E-mail: fengcl@126.c刀唱om
E-mail: fengcl@126.c刀唱om
product name:pho上務tobank
Product introdu土男ction: The high-frequency T紅亮ransformer is a powe土現r transformer wh就鐘ose operating 訊吧frequency exceed拍習s the intermediate fre愛吃quency(10kHz). It i黑說s mainly used雜算 as a high-frequ商家ency switching 聽樂power supply Trans上靜former in high坐作-frequency switching po近信wer supplies, and als通化o for high-frequency錢河 inverter power supplies些道 and high-freq你問uency inverter w機國elding machines. Accordi林靜ng to the opera土得ting frequency, it照視 can be divided i匠公nto several grad新票es: 10kHz -50k到事Hz, 50kHz -100kHz, 10東女0kHz ~ 500kHz, 500k朋金Hz ~ 1MHz, 10MHz&nb如相sp;or more.
support hotli放樹ne:
13928159753
Detailed introduction
brief introduc拍生tion
The high frequen跳笑cy Transformer時我 is the most important不科 part of the拍廠 switch power suppl到可y. There are many topo他水logies in the爸家 switch power supply. F計海or example, a half-bridg美有e power conversion在農 circuit, when working, 暗短two switch tran爸你sistors turn on and 務舞off to generat的空e a 100kHz high-freque校術ncy pulse wave我票, and then vary the電離 voltage through a high術少-frequency Transformer, 男空output alternatin玩對g current, an外得d the ratio of著女 the turns of她大 each winding訊章 coil of a hi大友gh-frequency遠南 Transformer. It 高通determines how much 場鄉the output voltage is. 著姐The most prominen算拿t of the typical half-b西筆ridge variable-vo長空ltage circuits are th開業e three high-frequency 志車Transformers: the 如話main Transformer, 費器the drive Trans得森former, and t資能he auxiliary Transf內說ormer(standby transf土做ormer). Each Transform街暗er has its own me聽吃asurement cri技讀teria in national 書你regulations, suc美海h as the main Tr議路ansformer., As lon什舞g as it is a p些請ower supply a和小bove 200W, its cor懂樂e diameter(heig紙視ht) must not 月上be less than 35mm. The a議銀uxiliary Transformer, 日醫when the power supp購綠ly does not exceed 300W,公那 its magnetic core di現是ameter reaches 16mm.
operating prin但國ciple
A transformer is a理算 device that conver黑快ts AC voltage, current問鄉, and impedance影相. When an AC curr時上ent is passe請河d through the primary co友開il, an AC flux is的雪 generated in the core(o畫公r core) so that the 我門voltage(or current) is 朋少induced in the sec村少ondary coil.
The transformer con制風sists of an iron術亮 core(or magnet放裡ic core) and市兒 a coil. The coi書頻l has two or m姐草ore windings機也. The windings of t資兒he connected p作機ower supply are c見放alled primary coils, and票坐 the remaining都黃 windings are 高聽called secondary coils.就書
Design principles匠去
In the high frequency 到新Transformer desig秒黑n, the leakage indu弟火ctance and distribut做作ed capacitance of the tr音水ansformer must be reduc房厭ed to a minimum, beca又錯use the high frequency雪那 Transformer in the s關懂witching power suppl笑著y transmits high frequ謝師ency pulse square生用 wave signals. In 爸煙the transient森裡 process of tran民都smission, leakage in笑見ductance and distributed白費 capacitance c近輛an cause surge cur暗黑rent and peak voltag會好e, as well as top oscil低家lation, resulting in電放 increased loss. Usu理還ally the leaka師多ge sensitivity of the Tr匠話ansformer is con明姐trolled by 1 % to 3 知離% of the prima花線ry inductance.
Leakage inductance 嗎費of primary coil-The lea什少kage inductance of the體人 Transformer i妹刀s due to the fact th近鐘at the flux 開錯between the primary c科報oil and the se白懂condary coil, 南雜between laye近行rs, and between turn煙年s and turns is no文通t fully coupled.
Distributed capacita身多nce-The capacitance嗎了 formed between t信票he winding turns of th作看e transforme場外r, between the upper and藍玩 lower layers of 輛草the same winding, bet道討ween different winding姐舞s, and between the師器 winding and th上好e shielding la草慢yer is called distribut站票ed capacitance.
Primary winding-Th家湖e primary winding sh站熱ould be placed in th下去e innermost la電音yer, so that the lengt紅弟h of each winding of the男美 primary winding of t得是he transformer can be k分作ept to a minimum, t看弟hus minimizing the use暗和 of the enti門兒re winding, which effe子通ctively redu物西ces the distribu作子tion capacita謝麗nce of the pri媽資mary winding its資志elf.
Secondary windin林為g -- the primary win弟化ding is finis拍媽hed, and the secondary 習技winding must 是討be made by w話樂inding(3 ~ 5) layer ins為她ulation liner. T的數his can reduce the cap開票acitance of the d在讀istributed capaci兵會tance between the pr校外imary winding and t如人he secondary wi音工nding, and also increa要高se the insulation照下 strength between the p明說rimary and secondary 用個winding, whi場家ch meets the requirement高我s of insulation花生 resistance.
Bias winding-whet文吧her the bias wind要鐘ing is wound betwe她新en the primary and 一妹secondary or&n很慢bsp;the outermost亮習, depending on whe裡門ther the adjustment 懂錯of the switching po我老wer supply is based快學 on the seco日日ndary or紅嗎 primary vol劇站tage. [ 1]
use
The high-fre離木quency Transformer i路人s a power transformer wh山山ose operating freque志新ncy exceeds the interm信喝ediate frequency(站放10kHz). It is mainly us器的ed as a high-frequenc自理y switching power sup影如ply Transfor暗兵mer in high-frequency sw厭化itching power suppl明又ies, and also fo微長r high-frequency inver近下ter power supp南愛lies and high-空不frequency inverter weldi一時ng machines. According學商 to the opera說麗ting frequency, it can b村錢e divided in唱森to several grades好道: 10kHz -50kHz, 50務見kHz -100kHz, 100kHz 紙分~ 500kHz, 500kHz ~ 1M長哥Hz, 1MHz or&nbs男妹p;more. In the case明民 of relatively la子懂rge transmission po音白wer, power devic請些es generally use I區是GBTs. Because IGBTs 兒黃have a cut-off current公和 trailing phe海生nomenon, the op樹員erating frequency i知有s relatively low; I內兒f the transm市人ission power is relativ麗從ely small, MOSFET c兒看an be used, and the ope厭費rating frequency i友開s relatively high音舞.
Manufacturing process
One of the main point個能s of manufacture proc業要ess of high frequenc光知y Transforme的湖r:
winding
A Determines BOBBI照城N parameters
B All winding r公土equirements are flat and銀笑 non-overlapping pr輛費inciples
C single winding l雨窗ines can be monochrome 明就lines, double文得 winding lines must 工熱be bichromatic 公公lines or 中錢open line immersed in t銀可in to separate foot門人 position, so as to avoi司麗d deviation.
D cross line must be土厭 taped away
1. Disclosed com年討pletely evenly.
2. Thick wind自現ing lines are un我舞iform and tigh聽吃t
3. Maintain a safe 拿信distance between th訊行e two sides of the co機科il and the edge of the 離們winding slot A, B
4. The length 章視of the sleeve must 可木be sufficient,站公 with one end exte房森nding into t線綠he safety tape of the w生上inding pipe and內議 the other end extendi長樂ng out of the用白 upper edge of BOBBIN, 姐讀but not near the 身劇PIN.
5. The outer我到most duct tape is cu亮工t on the core combina購光tion surface視信, and the cut草厭ting area must be cove我秒red by the core.志還
6. The edge of th坐光e tape is even wit拿們h the winding gr區船oove, the tap朋關e is not askew, and it 些討is not broken.
7. Tape the underside兒農 of the line and keep市自 the undersi務村de coil insulated.
The second k黑短ey point of high fr地制equency Transformer生科 manufacturing 醫煙process.
Twisted
A vertical BOBBIN視對
Rough: 0.8 φ Above windi大日ng 1 circle
Line 0.2-0 .8 φ windin懂對g 1.5 laps
Very thin line 0.2 φ地他 winding 2-3 laps森不
The principle of v離妹ertical BOBBIN ent離了anglement: The p校日rinciple of no門裡t exceeding 讀亮the convex point is t校他o press as m信又uch as possible.民紅
B Horizontal BO的做BBIN: About 笑煙2-3 laps, do no北現t wrap it to th空離e end, so as not t關動o burn BOBBIN when so木喝ldering. If there 習紅is a width lim高暗it and the specification從計s are strict商下, use this method to pr校章ess the thread to the 舞黃end and weld the ti為做n, and then cut但路 the edge PIN. T個務o reduce the width of th西請e whole Transform舞間er.
C horizontal(horizonta聽愛l, BOBBIN bi月坐nding method:玩能 about wrapped 了暗2-3 laps, do not 人民press to the end to a妹要void scald BOB我和BIN when solder睡信ing.
Note: If the國爸 product has a width 為媽limit and the路木 specification i個風s tight, it mu可離st be a specia黑公l case when the tang兵時ling part must b房能e cut short. At th但他is time, the錢科 tangling must be p不房ressed to the 站我end as much a離線s possible.
The key points of朋錯 high freque很船ncy Transformer 慢快manufacturing坐呢 process:
bush
General casing pos金吃ition rule:
External A: Th事務e shorter the影地 distance between the 放報end of the sleeve and th媽數e PIN, the b煙亮etter, but remember tha美錯t never wrap the 個喝sleeve around the P亮購IN will cause air是可 welding.
B interior: a b空黑oundless wall wit算老h flat BOBBIN ab懂木out 1/2 L in len水鐘gth
B With side walls, the 場師sleeve must be inside th外中e wall.
The width and material 飛技of the wall tape ca小厭n not be arbitrarily r就高eplaced because th就關e width and mat黃亮erial of the tra我影nsformer are女工 all related to safet少謝y regulations.
Width of the wall嗎對 tape: It is genera校工lly necessary 司光to be equal to票船 the height of習煙 the winding to preven好照t the copper化亮 wire from being stac綠是ked on the false wa銀低ll during windi冷章ng, but if it 器拿is difficult to load the個科 core, it will sometimes子藍 be about 1/2 -3 / 4拍女 height. However, 們銀the principle tha在道t the winding line is n舊中ot stacked on a fals書能e wall.
Skills: Sometimes if爸男 the thickne站但ss of the casing can be 河會affected by the thick ac坐錢cess line and 票媽if it affects its thick很年ness, it is nece微友ssary to pay sp鐘西ecial attenti紙白on to the positio唱中n of the sleeve, an員資d must have a safe dista音開nce(deep into the爸妹 width of the false wa秒湖ll).
This point must be 用坐deep into the false wal拍睡l sometimes because o她新f the large gap between 鄉村the false wall&nb草為sp;or when the cop鐘村per foil and the M/歌匠F are coiled, the錯日re is no obviou說錯s difference betw和城een the depth of th好商e false wall 南用;or the 訊慢online M/T. 些很Safety rods with友放 the same wi化見dth as the M/T有拿 must be selected. Each兵船 one is measu一小red.
Fourth, the manufact議日uring process of麗舞 high frequency T農美ransformers:
The principle of w要好inding copper tablets g上南enerally has the fo吃資llowing methods:
A circle is not con鄉快nected to the l物舊ead line, head an湖個d tail must not s鐵是hort-circuit, there is 慢們insulation betwee姐動n the head and業話 tail
B round lead wire,和笑 tape width 事劇must be greater th腦水an the width o用山f the copper器門 sheet,
Two lead wire船服s for copper plates 家章in C circle or&音物nbsp;more
D Middle extende報多d copper sheet, three購地 leads
Key Points of 畫店High Frequen笑通cy Transformer Manufac我討turing Techno章務logy:
Line
1) Vertical L地那ine Standard
A fine line, ro書子ugh line must be cov錢這ered by more費業 than one circl那金e, the line positio朋物n is between th歌很e base and the third友答 height of the conve吧頻x platform(if in城科sufficient, increase th畫火e number of rat雨術ional coils)
The length of the 嗎雜B-line head must no土分t exceed half of the adj身業acent two-foot dis還金tance and the maxim看坐um length must黑視 not exceed 1m上讀m.
C multiple group冷他s of lines and win頻新ding lines, t朋作hin lines on the 算冷top and can not finish 火線one and then an女動other.
D If there is a ca民拍sing, the length of 紅身the sleeve is not less t地腦han the base
When E is grooved with 弟廠different foo廠新t lines, it is wou務工nd in the same d分土irection.
2) Horizontal line市術 standards
A line is evenly dist算自ributed on the foo刀什t, and the line算站 head must exceed at le但冷ast half of t票體he line foot(if it i南遠s insufficient, in市請crease the number of cab秒花le coils to 間腦make up, but not文放 exceed the length of th說上e line foot)
The B thread is理你 spiral upward fro子拿m the root of the fo短地ot and at least藍街 one full circle.
The length of the C-line民姐 head must not器對 exceed half of the adja路還cent two-foot distance討南 and the maxim到唱um length mu問白st not exceed 1mm.
D multiple gro化厭ups of lines and wind厭自ing lines, t資間hin lines on the to站舞p layer and c是坐an not finish one a分來nd then another.
When E is in diffe南人rent grooves, it can be美購 wound in the 白哥same direction and 和個the length of the sl鐵自eeve is not lower廠公 than the base and is 拿些not close to the分他 PIN.
Key points of manufa輛新cturing proce習書ss for high f女靜requency Transform員歌ers:
tin solder
1) After soldering, the 吧中PIN foot is smo區船oth and smooth, withou票廠t foreign mat得知ter.
2) The threa有區d head is not家又 higher than the bump.
3) BOBBIN is complete a線爸fter soldering, with n理微o damage and short 水爸feet.
4) Oil(flux) residue is間又 small, no ti兒秒n, no short ci雜上rcuit.
5) There is n舞快o damage to 問行the tape.
6) Welding so視現lder at least on去計ce.
7) After soldering, th喝暗ere can be no 化訊lateral tin tips呢女.
Key points of 線唱manufacture process 笑老of high frequen紙鐵cy Transformer:
combination
1) The iron core co快錯mbination surface i山會s flat and there i報購s no skew.
2) BOBBIN, CORE, c爸業onnection pin ke月們pt clean, no impurity an生西d glue.
3) Know which direct歌拍ion CORE with GAP is pl制習aced.
4) EE, EI, UU-type CORE 國場maximum skew mus議草t not be great雪一er than 0.5 m老司m or 1/1動木0 CORE width.
The high frequen跳笑cy Transformer時我 is the most important不科 part of the拍廠 switch power suppl到可y. There are many topo他水logies in the爸家 switch power supply. F計海or example, a half-bridg美有e power conversion在農 circuit, when working, 暗短two switch tran爸你sistors turn on and 務舞off to generat的空e a 100kHz high-freque校術ncy pulse wave我票, and then vary the電離 voltage through a high術少-frequency Transformer, 男空output alternatin玩對g current, an外得d the ratio of著女 the turns of她大 each winding訊章 coil of a hi大友gh-frequency遠南 Transformer. It 高通determines how much 場鄉the output voltage is. 著姐The most prominen算拿t of the typical half-b西筆ridge variable-vo長空ltage circuits are th開業e three high-frequency 志車Transformers: the 如話main Transformer, 費器the drive Trans得森former, and t資能he auxiliary Transf內說ormer(standby transf土做ormer). Each Transform街暗er has its own me聽吃asurement cri技讀teria in national 書你regulations, suc美海h as the main Tr議路ansformer., As lon什舞g as it is a p些請ower supply a和小bove 200W, its cor懂樂e diameter(heig紙視ht) must not 月上be less than 35mm. The a議銀uxiliary Transformer, 日醫when the power supp購綠ly does not exceed 300W,公那 its magnetic core di現是ameter reaches 16mm.
operating prin但國ciple
A transformer is a理算 device that conver黑快ts AC voltage, current問鄉, and impedance影相. When an AC curr時上ent is passe請河d through the primary co友開il, an AC flux is的雪 generated in the core(o畫公r core) so that the 我門voltage(or current) is 朋少induced in the sec村少ondary coil.
The transformer con制風sists of an iron術亮 core(or magnet放裡ic core) and市兒 a coil. The coi書頻l has two or m姐草ore windings機也. The windings of t資兒he connected p作機ower supply are c見放alled primary coils, and票坐 the remaining都黃 windings are 高聽called secondary coils.就書
Design principles匠去
In the high frequency 到新Transformer desig秒黑n, the leakage indu弟火ctance and distribut做作ed capacitance of the tr音水ansformer must be reduc房厭ed to a minimum, beca又錯use the high frequency雪那 Transformer in the s關懂witching power suppl笑著y transmits high frequ謝師ency pulse square生用 wave signals. In 爸煙the transient森裡 process of tran民都smission, leakage in笑見ductance and distributed白費 capacitance c近輛an cause surge cur暗黑rent and peak voltag會好e, as well as top oscil低家lation, resulting in電放 increased loss. Usu理還ally the leaka師多ge sensitivity of the Tr匠話ansformer is con明姐trolled by 1 % to 3 知離% of the prima花線ry inductance.
Leakage inductance 嗎費of primary coil-The lea什少kage inductance of the體人 Transformer i妹刀s due to the fact th近鐘at the flux 開錯between the primary c科報oil and the se白懂condary coil, 南雜between laye近行rs, and between turn煙年s and turns is no文通t fully coupled.
Distributed capacita身多nce-The capacitance嗎了 formed between t信票he winding turns of th作看e transforme場外r, between the upper and藍玩 lower layers of 輛草the same winding, bet道討ween different winding姐舞s, and between the師器 winding and th上好e shielding la草慢yer is called distribut站票ed capacitance.
Primary winding-Th家湖e primary winding sh站熱ould be placed in th下去e innermost la電音yer, so that the lengt紅弟h of each winding of the男美 primary winding of t得是he transformer can be k分作ept to a minimum, t看弟hus minimizing the use暗和 of the enti門兒re winding, which effe子通ctively redu物西ces the distribu作子tion capacita謝麗nce of the pri媽資mary winding its資志elf.
Secondary windin林為g -- the primary win弟化ding is finis拍媽hed, and the secondary 習技winding must 是討be made by w話樂inding(3 ~ 5) layer ins為她ulation liner. T的數his can reduce the cap開票acitance of the d在讀istributed capaci兵會tance between the pr校外imary winding and t如人he secondary wi音工nding, and also increa要高se the insulation照下 strength between the p明說rimary and secondary 用個winding, whi場家ch meets the requirement高我s of insulation花生 resistance.
Bias winding-whet文吧her the bias wind要鐘ing is wound betwe她新en the primary and 一妹secondary or&n很慢bsp;the outermost亮習, depending on whe裡門ther the adjustment 懂錯of the switching po我老wer supply is based快學 on the seco日日ndary or紅嗎 primary vol劇站tage. [ 1]
use
The high-fre離木quency Transformer i路人s a power transformer wh山山ose operating freque志新ncy exceeds the interm信喝ediate frequency(站放10kHz). It is mainly us器的ed as a high-frequenc自理y switching power sup影如ply Transfor暗兵mer in high-frequency sw厭化itching power suppl明又ies, and also fo微長r high-frequency inver近下ter power supp南愛lies and high-空不frequency inverter weldi一時ng machines. According學商 to the opera說麗ting frequency, it can b村錢e divided in唱森to several grades好道: 10kHz -50kHz, 50務見kHz -100kHz, 100kHz 紙分~ 500kHz, 500kHz ~ 1M長哥Hz, 1MHz or&nbs男妹p;more. In the case明民 of relatively la子懂rge transmission po音白wer, power devic請些es generally use I區是GBTs. Because IGBTs 兒黃have a cut-off current公和 trailing phe海生nomenon, the op樹員erating frequency i知有s relatively low; I內兒f the transm市人ission power is relativ麗從ely small, MOSFET c兒看an be used, and the ope厭費rating frequency i友開s relatively high音舞.
Manufacturing process
One of the main point個能s of manufacture proc業要ess of high frequenc光知y Transforme的湖r:
winding
A Determines BOBBI照城N parameters
B All winding r公土equirements are flat and銀笑 non-overlapping pr輛費inciples
C single winding l雨窗ines can be monochrome 明就lines, double文得 winding lines must 工熱be bichromatic 公公lines or 中錢open line immersed in t銀可in to separate foot門人 position, so as to avoi司麗d deviation.
D cross line must be土厭 taped away
1. Disclosed com年討pletely evenly.
2. Thick wind自現ing lines are un我舞iform and tigh聽吃t
3. Maintain a safe 拿信distance between th訊行e two sides of the co機科il and the edge of the 離們winding slot A, B
4. The length 章視of the sleeve must 可木be sufficient,站公 with one end exte房森nding into t線綠he safety tape of the w生上inding pipe and內議 the other end extendi長樂ng out of the用白 upper edge of BOBBIN, 姐讀but not near the 身劇PIN.
5. The outer我到most duct tape is cu亮工t on the core combina購光tion surface視信, and the cut草厭ting area must be cove我秒red by the core.志還
6. The edge of th坐光e tape is even wit拿們h the winding gr區船oove, the tap朋關e is not askew, and it 些討is not broken.
7. Tape the underside兒農 of the line and keep市自 the undersi務村de coil insulated.
The second k黑短ey point of high fr地制equency Transformer生科 manufacturing 醫煙process.
Twisted
A vertical BOBBIN視對
Rough: 0.8 φ Above windi大日ng 1 circle
Line 0.2-0 .8 φ windin懂對g 1.5 laps
Very thin line 0.2 φ地他 winding 2-3 laps森不
The principle of v離妹ertical BOBBIN ent離了anglement: The p校日rinciple of no門裡t exceeding 讀亮the convex point is t校他o press as m信又uch as possible.民紅
B Horizontal BO的做BBIN: About 笑煙2-3 laps, do no北現t wrap it to th空離e end, so as not t關動o burn BOBBIN when so木喝ldering. If there 習紅is a width lim高暗it and the specification從計s are strict商下, use this method to pr校章ess the thread to the 舞黃end and weld the ti為做n, and then cut但路 the edge PIN. T個務o reduce the width of th西請e whole Transform舞間er.
C horizontal(horizonta聽愛l, BOBBIN bi月坐nding method:玩能 about wrapped 了暗2-3 laps, do not 人民press to the end to a妹要void scald BOB我和BIN when solder睡信ing.
Note: If the國爸 product has a width 為媽limit and the路木 specification i個風s tight, it mu可離st be a specia黑公l case when the tang兵時ling part must b房能e cut short. At th但他is time, the錢科 tangling must be p不房ressed to the 站我end as much a離線s possible.
The key points of朋錯 high freque很船ncy Transformer 慢快manufacturing坐呢 process:
bush
General casing pos金吃ition rule:
External A: Th事務e shorter the影地 distance between the 放報end of the sleeve and th媽數e PIN, the b煙亮etter, but remember tha美錯t never wrap the 個喝sleeve around the P亮購IN will cause air是可 welding.
B interior: a b空黑oundless wall wit算老h flat BOBBIN ab懂木out 1/2 L in len水鐘gth
B With side walls, the 場師sleeve must be inside th外中e wall.
The width and material 飛技of the wall tape ca小厭n not be arbitrarily r就高eplaced because th就關e width and mat黃亮erial of the tra我影nsformer are女工 all related to safet少謝y regulations.
Width of the wall嗎對 tape: It is genera校工lly necessary 司光to be equal to票船 the height of習煙 the winding to preven好照t the copper化亮 wire from being stac綠是ked on the false wa銀低ll during windi冷章ng, but if it 器拿is difficult to load the個科 core, it will sometimes子藍 be about 1/2 -3 / 4拍女 height. However, 們銀the principle tha在道t the winding line is n舊中ot stacked on a fals書能e wall.
Skills: Sometimes if爸男 the thickne站但ss of the casing can be 河會affected by the thick ac坐錢cess line and 票媽if it affects its thick很年ness, it is nece微友ssary to pay sp鐘西ecial attenti紙白on to the positio唱中n of the sleeve, an員資d must have a safe dista音開nce(deep into the爸妹 width of the false wa秒湖ll).
This point must be 用坐deep into the false wal拍睡l sometimes because o她新f the large gap between 鄉村the false wall&nb草為sp;or when the cop鐘村per foil and the M/歌匠F are coiled, the錯日re is no obviou說錯s difference betw和城een the depth of th好商e false wall 南用;or the 訊慢online M/T. 些很Safety rods with友放 the same wi化見dth as the M/T有拿 must be selected. Each兵船 one is measu一小red.
Fourth, the manufact議日uring process of麗舞 high frequency T農美ransformers:
The principle of w要好inding copper tablets g上南enerally has the fo吃資llowing methods:
A circle is not con鄉快nected to the l物舊ead line, head an湖個d tail must not s鐵是hort-circuit, there is 慢們insulation betwee姐動n the head and業話 tail
B round lead wire,和笑 tape width 事劇must be greater th腦水an the width o用山f the copper器門 sheet,
Two lead wire船服s for copper plates 家章in C circle or&音物nbsp;more
D Middle extende報多d copper sheet, three購地 leads
Key Points of 畫店High Frequen笑通cy Transformer Manufac我討turing Techno章務logy:
Line
1) Vertical L地那ine Standard
A fine line, ro書子ugh line must be cov錢這ered by more費業 than one circl那金e, the line positio朋物n is between th歌很e base and the third友答 height of the conve吧頻x platform(if in城科sufficient, increase th畫火e number of rat雨術ional coils)
The length of the 嗎雜B-line head must no土分t exceed half of the adj身業acent two-foot dis還金tance and the maxim看坐um length must黑視 not exceed 1m上讀m.
C multiple group冷他s of lines and win頻新ding lines, t朋作hin lines on the 算冷top and can not finish 火線one and then an女動other.
D If there is a ca民拍sing, the length of 紅身the sleeve is not less t地腦han the base
When E is grooved with 弟廠different foo廠新t lines, it is wou務工nd in the same d分土irection.
2) Horizontal line市術 standards
A line is evenly dist算自ributed on the foo刀什t, and the line算站 head must exceed at le但冷ast half of t票體he line foot(if it i南遠s insufficient, in市請crease the number of cab秒花le coils to 間腦make up, but not文放 exceed the length of th說上e line foot)
The B thread is理你 spiral upward fro子拿m the root of the fo短地ot and at least藍街 one full circle.
The length of the C-line民姐 head must not器對 exceed half of the adja路還cent two-foot distance討南 and the maxim到唱um length mu問白st not exceed 1mm.
D multiple gro化厭ups of lines and wind厭自ing lines, t資間hin lines on the to站舞p layer and c是坐an not finish one a分來nd then another.
When E is in diffe南人rent grooves, it can be美購 wound in the 白哥same direction and 和個the length of the sl鐵自eeve is not lower廠公 than the base and is 拿些not close to the分他 PIN.
Key points of manufa輛新cturing proce習書ss for high f女靜requency Transform員歌ers:
tin solder
1) After soldering, the 吧中PIN foot is smo區船oth and smooth, withou票廠t foreign mat得知ter.
2) The threa有區d head is not家又 higher than the bump.
3) BOBBIN is complete a線爸fter soldering, with n理微o damage and short 水爸feet.
4) Oil(flux) residue is間又 small, no ti兒秒n, no short ci雜上rcuit.
5) There is n舞快o damage to 問行the tape.
6) Welding so視現lder at least on去計ce.
7) After soldering, th喝暗ere can be no 化訊lateral tin tips呢女.
Key points of 線唱manufacture process 笑老of high frequen紙鐵cy Transformer:
combination
1) The iron core co快錯mbination surface i山會s flat and there i報購s no skew.
2) BOBBIN, CORE, c爸業onnection pin ke月們pt clean, no impurity an生西d glue.
3) Know which direct歌拍ion CORE with GAP is pl制習aced.
4) EE, EI, UU-type CORE 國場maximum skew mus議草t not be great雪一er than 0.5 m老司m or 1/1動木0 CORE width.