1.Copper cladding
Iyo inonzi copper coating, ndiyo nzvimbo isina basa pabhodhi redunhu se datum, uyezve yakazadzwa nemhangura yakasimba, idzi nzvimbo dzemhangura dzinozivikanwawo sekuzadza mhangura.
Zvinokosha zvemhangura yemhangura ndezvi: kuderedza pasi impedance, kunatsiridza anti-kupindira kugona;Deredza kudonha kwemagetsi, kuvandudza simba remagetsi;Yakabatanidzwa netambo yepasi, inogonawo kuderedza nzvimbo yechiuno.
Zvakare nechinangwa chekugadzira PCB welding se deformation sezvinobvira, vazhinji vanogadzira PCB vanozodawo kuti PCB vagadziri vazadze nzvimbo yakavhurika yePCB nemhangura kana grid pasi waya.Kana mhangura yacho isina kubatwa zvakanaka, inenge yatonyanya kukosha kurasikirwa nayo.Mhangura “yakanaka kupfuura yakaipa” here kana kuti “yakaipa pane yakanaka”?Sezvatinoziva tose, munyaya yehuwandu hwepamusoro, iyo yakagoverwa capacitance ye wiring pane yakadhindwa redunhu bhodhi ichashanda.Kana kureba kwakakura kupfuura 1/20 yewavelength inoenderana neruzha frequency, iyo antenna mhedzisiro inogadzirwa, uye ruzha rwunoburitswa kunze kuburikidza newaya.Kana paine mhangura yakadzikwa zvisina kunaka muPCB, iyo copper coating ichava chishandiso chekuparadzira ruzha.
Nokudaro, mumatunhu akakwirira, usafunga kuti pasi pane imwe nzvimbo, iyi "waya yepasi", inofanira kunge iri pasi pe λ/20 spacing, mu wiring kuburikidza negomba, uye pasi ndege ye multilayer "good grounding." ”.Kana chifukidzo chemhangura chakanyatsogadziriswa, chifukidzo chemhangura hachingowedzera ikozvino, asiwo chinotamba basa reviri rekudzivirira kupindira.Nokudaro, mumatunhu akakwirira, usafunga kuti pasi pane imwe nzvimbo, iyi "waya yepasi", inofanira kunge iri pasi pe λ/20 spacing, mu wiring kuburikidza negomba, uye pasi ndege ye multilayer "good grounding." ”.Kana chifukidzo chemhangura chakanyatsogadziriswa, chifukidzo chemhangura hachingowedzera ikozvino, asiwo chinotamba basa reviri rekudzivirira kupindira.
2.Zvimiro zviviri zvemhangura yemhangura
Pane kazhinji nzira mbiri dzinokosha dzekuvhara mhangura, kureva, nzvimbo yakakura yemhangura uye grid mhangura, inowanzobvunzwa kuti nzvimbo yakakura yemhangura kana grid copper yakanaka, haina kunaka kuita generalize.
Sei?Nzvimbo yakakura yemhangura yekuputira, pamwe nekuwedzera ikozvino uye kudzivirira huviri basa, asi nzvimbo huru yemhangura yekuputira, kana wave solder, bhodhi rinogona kukwidibira kumusoro, kana kutoputika.Naizvozvo, nzvimbo hombe yemhangura yakafukidzwa, uye akati wandei anovharirwa anowanzo kuvhurwa kudzikisa foil foil yemhangura.
Iyo yakapfava grid yakafukidzwa nemhangura inonyanya kudzivirira mhedzisiro, basa rekuwedzera ikozvino rakaderedzwa, kubva pakuona kwekupisa kupisa, grid ine zvakanakira (inoderedza kupisa kwemhangura) uye inotamba imwe basa remagetsi ekudzivirira.Kunyanya kudunhu rekubata, sezvakaratidzwa mumufananidzo uri pazasi: Izvo zvinodiwa kuratidza kuti grid inoumbwa nemitsara yakadzama.Isu tinoziva kuti kudunhu, hupamhi hwemitsara hunoenderana ne "kureba kwemagetsi" kune iyo inoshanda frequency yedunhu redunhu (iyo chaiyo saizi inogona kukamurwa nedhijitari frequency inoenderana nekushanda frequency, ona mabhuku akakodzera kuti uwane ruzivo) .
Kana iyo yekushanda frequency isiri yakanyanya kukwirira, pamwe mitsetse yegridi haibatsiri zvakanyanya, uye kamwe chete urefu hwemagetsi hunoenderana nehuwandu hwekushanda, hwakaipa kwazvo, uye unoona kuti dunhu harisi kushanda zvakanaka zvachose, uye kune masaini kwese kwese. izvo zvinokanganisa hurongwa.
Chirevo ndechekusarudza maererano nekugadzirwa kwebhodhi redunhu, kwete kubatirira pane chimwe chinhu.Naizvozvo, high frequency circuit inopesana nekukanganisa zvinodiwa zve-multi-purpose grid, low frequency circuit ine hombe yazvino dunhu uye zvimwe zvinowanzoshandiswa zvizere mhangura paving.