Indlela yokubala ye PCB ububanzi bomgca kunye nekhoyo ngoku kulandelayo:

Kuqala bala indawo enqamlezayo yeTrack. Ubunzima befoyile yobhedu kwii-PCBS ezininzi yi-35um (ukuba awuqinisekanga, ungabuza umenzi wePCB). Indawo enqamlezayo iphindaphindwe ngobubanzi bomgca. Kukho ixabiso elinamandla okuqina koxinzelelo lwangoku ukusuka kwi-15 ukuya kwi-25 amperes ngesikwere semilimitha.

Linganisa indawo yecandelo elinqamlezileyo ukuze ufumane amandla okuhamba ngokuhamba. I = KT0.44a0.75K lulungelelaniso lokulungisa. Ngokubanzi, i-0.024 ithathwa kulwahlulo lwangaphakathi lobhedu olunxityiwe, kwaye i-0.048t ithathwa kulwahlulo lwangaphandle njengokunyuka kobushushu, kwaye iyunithi yiCelsius (indawo yokunyibilikisa yobhedu yi-1060 ℃). Indawo enqamlezileyo yobhedu, kwaye iyunithi isikwere MIL (hayi mm mm, Mna lelona xesha liphezulu livumelekileyo ngoku, iyunithi ye-amperes (AMP) ngokubanzi yi-10mil = 0.010inch = 0.254, enokuba ngu-1A, 250MIL = 6.35mm, kwaye yidatha eyi-8.3A. Ukubalwa kwamandla e-PCB okwangoku okuphetheyo bekusilela kweendlela zobugcisa ezigunyazisiweyo kunye neefomula. Iinjineli ezinamava zeCAD zixhomekeke kumava abo ukwenza izigqibo ezichanekileyo ngakumbi. Kodwa kwi-CAD novice, akunakuthiwa uhlangabezana nengxaki enzima.

Umthamo wangoku wokuphatha we-PCB uxhomekeke kwezi zinto zilandelayo: ububanzi bomgca, ubukhulu bomgca (ubukhulu befoyile yobhedu), ubushushu obuvumelekileyo bokunyuka. Njengoko sonke sisazi, ububanzi bePCB, kokukhona amandla okuphatha ngoku. Apha, ndicela undixelele: ucinga ukuba i-10MIL inokumelana ne-1A phantsi kweemeko ezifanayo, ingakanani i-50MIL yangoku enokumelana nayo, ngaba ngu-5A? Impendulo, ewe, ayikho. Ububanzi bomgca ukwiyunithi ye-intshi (Inch Inch = 25.4 millimeters) 1 oz. Ubhedu = 35 micron ubukhulu, 2 oz. = 70 micron ubukhulu, 1 oz = 0.035mm 1mil. = 10-3inch. Landa uMthamo we-MIL STD 275

Uxinzelelo lokwehla okubangelwa kukungqinelana nobude beengcingo kufuneka kuthathelwe ingqalelo kulingo. I-tin kwinkqubo ye-welds isetyenziselwa kuphela ukwandisa umthamo wangoku, kodwa kunzima ukulawula umthamo we-tin. 1 OZ ubhedu, 1mm ububanzi, ngokubanzi 1-3 A galvanometer, ngokuxhomekeke kubude bomgca wakho, iimfuno zoxinzelelo lokwehla.

Elona xabiso liphezulu langoku kufuneka libe lelona xabiso liphezulu livumelekileyo phantsi komda wokunyuka kobushushu, kwaye ixabiso lefyuzi lixabiso apho ukunyuka kobushushu kufikelela kwinqanaba lobhedu. Umz. 50mil 1oz ubushushu bonyuka nge-1060 degrees (okt indawo yokunyibilika kobhedu), ngoku kungama-22.8A.