Txoj kev tiv thaiv kom raug
Hauv kev tsim cov khoom lag luam, los ntawm kev xav ntawm tus nqi, kev nce qib, kev ua tau zoo thiab kev ua tau zoo, nws yog qhov zoo tshaj plaws los ua tib zoo xav txog thiab ua raws li cov qauv tsim nyog hauv kev tsim kho qhov project kom sai li sai tau. Cov kev daws teeb meem feem ntau tsis yog qhov zoo tshaj plaws ntawm cov khoom siv ntxiv thiab lwm yam kev kho "ceev" siv nyob rau lub sijhawm tom qab ntawm qhov project. Nws qhov zoo thiab kev ntseeg tau tsis zoo, thiab tus nqi ntawm kev siv ua ntej hauv cov txheej txheem yog siab dua. Qhov tsis muaj kev pom zoo nyob rau theem pib tsim ntawm qhov project feem ntau ua rau kev xa khoom qeeb thiab tuaj yeem ua rau cov neeg siv khoom tsis txaus siab rau cov khoom. Qhov teeb meem no siv rau txhua qhov tsim, txawm tias nws yog simulation, lej, hluav taws xob lossis tshuab.
Piv nrog rau qee thaj tsam ntawm kev thaiv ib leeg IC thiab PCB, tus nqi thaiv tag nrho PCB yog kwv yees li 10 npaug, thiab tus nqi thaiv tag nrho cov khoom yog 100 zaug. Yog tias koj xav tau thaiv tag nrho chav lossis lub tsev, tus nqi yog qhov tseeb ntawm astronomical daim duab.
Hauv kev tsim cov khoom lag luam, los ntawm kev xav ntawm tus nqi, kev nce qib, kev ua tau zoo thiab kev ua tau zoo, nws yog qhov zoo tshaj plaws los ua tib zoo xav txog thiab ua raws li cov qauv tsim nyog hauv kev tsim kho qhov project kom sai li sai tau. Cov kev daws teeb meem feem ntau tsis yog qhov zoo tshaj plaws ntawm cov khoom siv ntxiv thiab lwm yam kev kho "ceev" siv nyob rau lub sijhawm tom qab ntawm qhov project. Nws qhov zoo thiab kev ntseeg tau tsis zoo, thiab tus nqi ntawm kev siv ua ntej hauv cov txheej txheem yog siab dua. Qhov tsis muaj kev pom zoo nyob rau theem pib tsim ntawm qhov project feem ntau ua rau kev xa khoom qeeb thiab tuaj yeem ua rau cov neeg siv khoom tsis txaus siab rau cov khoom. Qhov teeb meem no siv rau txhua qhov tsim, txawm tias nws yog simulation, lej, hluav taws xob lossis tshuab.
Piv nrog rau qee thaj tsam ntawm kev thaiv ib leeg IC thiab PCB, tus nqi thaiv tag nrho PCB yog kwv yees li 10 npaug, thiab tus nqi thaiv tag nrho cov khoom yog 100 zaug. Yog tias koj xav tau thaiv tag nrho chav lossis lub tsev, tus nqi yog qhov tseeb ntawm astronomical daim duab.
Lub hom phiaj ntawm EMI shielded yog tsim Faraday tawb nyob ib ncig ntawm lub kaw RF suab nrov ntawm lub thawv hlau. Lub tsib sab ntawm sab saum toj yog ua los ntawm cov ntaub thaiv npog lossis lub tank hlau, thiab sab hauv qab yog siv nrog cov txheej hauv av hauv PCB. Nyob rau hauv lub zoo tagnrho plhaub, tsis muaj paug yuav nkag los yog tawm hauv lub thawv. Cov kev tiv thaiv tsis zoo no yuav tshwm sim, xws li tso tawm los ntawm perforation mus rau qhov nyob rau hauv cov kaus poom, thiab cov tin poom tso cai rau lub tshav kub hloov thaum lub sij hawm rov qab los ntawm solder. Cov xau no kuj tuaj yeem tshwm sim los ntawm qhov tsis xws ntawm EMI cushion lossis welded accessories. Lub suab nrov kuj tseem tuaj yeem tshem tawm ntawm qhov chaw nruab nrab ntawm cov av hauv av mus rau hauv av txheej.
Kev lig kev cai, PCB shielding txuas nrog PCB nrog lub pore vuam tail. Lub vuam tail yog manually welded manually tom qab lub ntsiab kho kom zoo nkauj txheej txheem. Qhov no yog ib lub sij hawm-siv thiab kim txheej txheem. Yog tias kev kho yuav tsum tau ua thaum lub sij hawm installation thiab tu, nws yuav tsum tau welded kom nkag mus rau hauv Circuit Court thiab cov khoom nyob rau hauv lub shielding txheej. Hauv cheeb tsam PCB uas muaj cov feem sib txawv, muaj ib qho kev pheej hmoo kim heev ntawm kev puas tsuaj.
Tus cwj pwm ntawm PCB kua qib shielding tank yog raws li nram no:
Me hneev taw;
Low-key configuration;
Ob-txheej tsim (lub laj kab thiab lub hau);
Pass los yog nto paste;
Multi-cavity qauv ( cais ntau yam khoom nrog tib txheej thaiv);
Yuav luag unlimited tsim yooj;
Qhov cua;
Aable hau rau ceev ceev cov khoom;
I/O qhov
Connector incision;
RF absorber txhim khu kev tiv thaiv;
ESD tiv thaiv nrog rwb thaiv tsev ntaub;
Siv lub xauv ruaj khov ua haujlwm ntawm tus ncej thiab lub hau kom ntseeg tau tias tiv thaiv kev cuam tshuam thiab kev co.
Tej yam khoom siv shielding
Muaj ntau yam khoom siv tiv thaiv feem ntau siv tau, suav nrog tooj dag, npib tsib xee nyiaj thiab stainless hlau. Feem ntau hom yog:
Me hneev taw;
Low-key configuration;
Ob-txheej tsim (lub laj kab thiab lub hau);
Pass los yog nto paste;
Multi-cavity qauv ( cais ntau yam khoom nrog tib txheej thaiv);
Yuav luag unlimited tsim yooj;
Qhov cua;
Aable hau rau ceev ceev cov khoom;
I/O qhov
Connector incision;
RF absorber txhim khu kev tiv thaiv;
ESD tiv thaiv nrog rwb thaiv tsev ntaub;
Siv lub xauv ruaj khov ua haujlwm ntawm tus ncej thiab lub hau kom ntseeg tau tias tiv thaiv kev cuam tshuam thiab kev co.
Feem ntau, tin-plated steel yog qhov kev xaiv zoo tshaj plaws los thaiv tsawg dua 100 MHz, thaum tin-plated tooj liab yog qhov kev xaiv zoo tshaj plaws saum 200 MHz. Tin plating tuaj yeem ua tiav qhov zoo tshaj plaws vuam efficiency. Vim tias cov txhuas nws tus kheej tsis muaj cov yam ntxwv ntawm cov cua sov dissipation, nws tsis yooj yim rau welding rau hauv av txheej, yog li nws feem ntau tsis siv rau PCB qib shielding.
Raws li cov kev cai ntawm cov khoom kawg, tag nrho cov ntaub ntawv siv los tiv thaiv yuav tsum tau ua raws li ROHS tus qauv. Tsis tas li ntawd, yog tias cov khoom siv nyob rau hauv qhov chaw kub thiab av noo, nws yuav ua rau hluav taws xob corrosion thiab oxidation.
Post lub sij hawm: Apr-17-2023
