Nnyocha nke ọla kọpa gbasara PCB

If there are many PCB ground, SGND, AGND, GND, etc., it is required to use the most important ground as reference to independently coat copper according to the different PCB board position, that is, connect the ground together.

Enwere ọtụtụ ihe kpatara ịtọgbọ ọla kọpa n’ozuzu ya. 1, EMC. Maka nnukwu ala ma ọ bụ ike ọkọnọ na -etinye ọla kọpa, ọ ga -arụ ọrụ nchekwa, ụfọdụ pụrụ iche, dịka PGND na -arụ ọrụ nchekwa.

2. chọrọ usoro PCB. Generally, in order to ensure the electroplating effect, or no deformation of lamination, for PCB board with less wiring layer copper.

3, chọrọ iguzosi ike n’ezi ihe mgbaàmà, nye mgbama dijitalụ dị elu ugboro ugboro ụzọ azụ azụ zuru oke, ma belata wiwi netwọkụ dc. N’ezie, enwere mwepụ ọkụ, ihe nrụnye ngwa pụrụ iche chọrọ ọla kọpa na ihe ndị ọzọ. Enwere ọtụtụ ihe kpatara ịtọgbọ ọla kọpa n’ozuzu ya.

1, EMC. Maka nnukwu ala ma ọ bụ ike gbasaa ọla kọpa, ọ ga -arụ ọrụ nchekwa, ụfọdụ pụrụ iche, dịka PGND na -arụ ọrụ nchekwa.

2. chọrọ usoro PCB. Generally, in order to ensure the electroplating effect, or no deformation of lamination, for PCB board with less wiring layer copper.

3, chọrọ nkwụsi ike nke akara, ka ọ bụrụ akara ngosi dijitalụ dị elu ugboro ụzọ azụ azụ zuru oke, ma belata wiwi netwọkụ DC. N’ezie, enwere mwepụ ọkụ, ihe nrụnye ngwa pụrụ iche chọrọ ọla kọpa na ihe ndị ọzọ.

A shop, a major advantage of copper is to reduce ground impedance (there was a large part of the so-called anti-jamming is to reduce ground impedance) of the digital circuit exists in a large number of peak pulse current, thereby reducing ground impedance is more necessary to some, is generally believed that for the whole circuit composed of digital devices should be large floor, for the analog circuit, Ala loop guzobere site n’ịtọba ọla kọpa ga -eme ka nnyonye anya njikọta elektrọnik (ewezuga okirikiri okirikiri dị elu). Yabụ, ọ bụghị okirikiri okirikiri niile chọrọ ọla kọpa zuru ụwa ọnụ (BTW: arụmọrụ paịlị ọla kọpa dị mma karịa ngọngọ niile)

Abụọ, uru ịtọgbọ ọla kọpa pụtara: 1, ịjikọ ọla kọpa na waya ala jikọtara ọnụ, ka anyị wee nwee ike belata mpaghara sekit 2, gbasaa nnukwu mpaghara ọla kọpa iji belata nguzogide ala, belata mgbada nrụgide na isi ihe abụọ a, ọnụọgụ abụọ, ma ọ bụ ịme anwansị kwesịrị ịdị. na-etinye ọla kọpa iji mee ka ikike mgbochi na-abawanye, na oge nke ugboro ugboro kwesịrị ịgbasa ala dijitalụ na analog ha iji kewaa ọla kọpa, mgbe ahụ ha na-ejikọ ha n’otu ebe, The single point can be connected by a wire wound around a magnetic ring several times. Agbanyeghị, ọ bụrụ na ugboro ugboro adịghị oke oke, ma ọ bụ ọnọdụ ọrụ nke ngwa adịghị njọ, ọ nwere ike zuru ike. Oscillator kristal na-arụ ọrụ dị ka onye na-ebugharị ugboro ugboro na sekit. Ị nwere ike dobe ọla kọpa gburugburu ya wee tụda shea kristal, nke ka mma.

Kedu ihe dị iche n’etiti ngọngọ ọla kọpa niile na okporo? Kpọtụrụ iji nyochaa ihe dị ka ụdị mmetụta atọ: 3 mara mma mkpọchi mkpọtụ 1 iji belata nnyonye anya ugboro ugboro (na ụdị sekit nke ihe kpatara ya) dịka ntuziaka wiring si dị: ike na nhazi dị ka o kwere mee ihe kpatara ịgbakwunye grid ah adịghị na ụkpụrụ anaghị ekwekọ na ya? Ọ bụrụ na site na nlele nke ugboro ugboro, ọ bụghị ihe ziri ezi na wiwi ikuku dị elu mgbe ọtụtụ taboo bụ eriri dị nkọ, na ike ọkọnọ nwere n karịa ogo 90 bụ ọtụtụ nsogbu. Ihe mere ị na-eme ya n’ụzọ ahụ bụ naanị ihe aka ọrụ: lelee ndị ejiri aka wee hụ ma a na-ese ya n’ụzọ ahụ. Ị na -ahụ eserese a ma ejiri m n’aka na enwere mgbawa na ya n’ihi na enwere usoro a na -akpọ ịgbanye ọkụ mgbe ị na -etinye ya na ọ ga -eme ka bọọdụ dị na mpaghara gị ma ọ bụrụ na itinye ya niile na ọla kọpa ụfọdụ ọnụọgụ ọnụọgụ. n’akụkụ abụọ dị iche na bọọdụ ga -agbago elu, mgbe ahụ nsogbu ga -ebilite, Na mkpuchi nchara (nke usoro a chọkwara), ọ dị nfe ịmehie na PIN nke mgbawa, ọnụego jụrụ ajụ ga -agbago n’ahịrị kwụ ọtọ. N’ezie, usoro a nwekwara ọghọm: N’okpuru usoro mmebi anyị ugbu a: Ọ dị nfe maka ihe nkiri ahụ ịrapara na ya, mgbe ahụ na ọrụ acid, ebe ahụ nwere ike ghara imebi, na enwere nnukwu ihe mkpofu, mana ọ bụrụ na ọ dị, ọ bụ naanị bọọdụ gbajiri na ọ bụ mgbawa na -agbada. bọọdụ! From this point of view, can you see why it was drawn that way? N’ezie, enwerekwa mpekere tebụl na -enweghị grid, site na echiche nke ịdị n’otu ngwaahịa a, enwere ike inwe ọnọdụ abụọ: 2, usoro nsị ya dị mma nke ukwuu; 2. Kama ịgbanye ọkụ, ọ na-anabata ịgbado ọkụ ọkụ dị elu, mana na nke a, itinye ego nke ahịrị mgbakọ niile ga-adị elu karịa ugboro 3-5.