Kutheni kufuneka senze imingxunya yeefeni PCB uyila kuqala?

Zimbini iinjongo zemingxuma yeefeni, ukugqobhoza ukuze kungene indawo kunye nokunciphisa indlela yokubuya!

Umzekelo, umngxuma we-GND, umngxuma wefeni ekufutshane unokufezekisa injongo yokunciphisa indlela!

Injongo yokubethelwa kwangaphambili kukuthintela imingxuma ayinakubethelwa xa i-wiring ixinene kakhulu emva kokuba imingxuma ingabethelwa. Umgca we-GND uqhagamshelwe kumgama omde, oyindlela ende yokubuya.

Oku kuhlala kuhlangatyezwana nayo xa kusenziwa uyilo lwePCB olunesantya esiphezulu kunye noyilo lwePCB enamaleko amaninzi. Kukulungele kakhulu ukucima umngxuma emva kokubethelwa kwangaphambili. Ngokuchasene noko, kunzima kakhulu ukongeza i-via emva kokuba ugqibile ukuhambisa ucingo. Ngeli xesha, ingcamango yakho yesiqhelo kukufumana nje ucingo ukuyidibanisa, kwaye awukwazi ukuqwalasela i-SI yomqondiso. Ihambelana kakhulu neenkqubo eziqhelekileyo.

Indlela yokugweba abo kufuneka babe yimingxuma yeefeni?

Zombini zinokuba yimingxuma yeefeni. Imigca emifutshane inokudityaniswa ngokuthe ngqo kumaleko angaphezulu, kwaye imigca emide inokudityaniswa nemingxuma yabalandeli. Oku luncedo olukhulu kubayili bePCB ekucwangciseni nasekuqhubeni, kwaye imigca ephumayo icocekile kwaye mihle.

Imingxunya yeefeni zehlabathi phambi kobeko lwePCB

1. Imingxunya yeefeni ezichasene newotshi okanye ngasekunene; iingcingo ezimfutshane ziqhagamshelwe ngokuthe ngqo.

2. Ngokomzekelo, ungaqala ukusuka kwikona esezantsi ekhohlo kwaye udibanise ngokuthe ngqo ngomgca omfutshane. Intambo yamandla ijiyile ngokuthe ngqo. VIA-8-16mil.

shift+e ukubamba iziko.

3. Ngobuhle, i-VIA ilungelelaniswe phezulu nasezantsi okanye ekhohlo nasekunene.

4. I-Crystal oscillator, i-π-shaped filter. Ungabi nayo ngokusebenzisa inkqubo kwi-crystal oscillator circuit. Imbi kumqondiso. Emva koko jongana nesekethe ye-crystal oscillator.

5. Unikezelo lwamandla: i-vcc kunye ne-GND zinenani elifanayo le-vias.

6. Nika ingqalelo kwingqibelelo yendiza ephantsi xa udlula emingxunyeni. Kufuneka kubekho umhlaba phakathi kweendlela ezimbini zokudlula.