Kedu ihe bụ njirimara impedance na PCB?Kedu ka esi edozi nsogbu impedance?

Na upgrading nke ahịa ngwaahịa, ọ na-eji nwayọọ nwayọọ malite kwupụta direction nke ọgụgụ isi, otú ahụ chọrọ maka PCB osisi impedance na-aghọ ndị ọzọ stringent, nke na-akwalite na-aga n'ihu ntozu nke impedance imewe technology.
Kedu ihe bụ impedance njirimara?

1. Nguzogide na-emepụta site na ntụgharị nke ugbu a na ihe ndị ahụ metụtara ike na inductance.Mgbe enwere mgbasa ozi waveform eletrọnịkị n'ime onye na-eduzi ya, nguzogide ọ na-enweta ka a na-akpọ impedance.

2. Nguzogide bụ nguzogide na-emepụta site na ugbu a kpọmkwem na components, nke metụtara voltaji, resistivity, na ugbu a.

Ngwa nke impedance njirimara

1. A na-etinye ya na mgbasa ozi ngwa ngwa dị elu na sekit ugboro ugboro, arụmọrụ eletrik na-enye site na mpempe akwụkwọ ga-enwe ike igbochi ntụgharị uche n'oge nnyefe mgbaàmà, mee ka mgbaàmà ahụ ghara ịdị irè, belata nkwụsị nnyefe, ma rụọ ọrụ kwekọrọ.Mgbama zuru oke, ntụkwasị obi, ziri ezi, enweghị nchekasị na mkpọtụ enweghị mkpọtụ.

2. Enweghị ike ịghọta nha nke impedance dị ka ibu ka mma ma ọ bụ nke nta ka ọ dị mma, isi ihe na-adaba.

Njikwa akara nke impedance njirimara

The dielectric na-adịgide adịgide nke mpempe akwụkwọ, ọkpụrụkpụ nke dielectric oyi akwa, akara obosara, ọla kọpa ọkpụrụkpụ, na ọkpụrụkpụ nke solder nkpuchi.

Mmetụta na njikwa ihe mkpuchi solder

1. Ọkpụrụkpụ nke ihe mkpuchi na-ere ahịa nwere obere mmetụta na mgbochi.Ọkpụrụkpụ nke ihe mkpuchi na-ere ahịa na-abawanye site na 10um, na uru impedance na-agbanwe naanị 1-2 ohms.

2. N'ime imewe ahụ, enwere nnukwu ọdịiche dị n'etiti nhọrọ nke mkpuchi na enweghị mkpuchi mkpuchi mkpuchi, otu njedebe 2-3 ohms, na 8-10 ohms dị iche.

3. Na mmepụta nke mbadamba impedance, a na-achịkwakarị ọkpụrụkpụ nke ihe mkpuchi na-ere ahịa dị ka ihe mmepụta chọrọ.

Nnwale impedance

Usoro bụ isi bụ usoro TDR (Oge Domain Reflectometry).Ụkpụrụ bụ isi bụ na ngwá ọrụ ahụ na-emepụta ihe mgbaàmà pulse, nke a na-atụgharị azụ site na mpempe ule nke bọọdụ sekit iji tụọ mgbanwe na njirimara impedance nke ikuku na apịaji azụ.Mgbe kọmpụta ahụ nyochachara njiri mara njirimara, a na-emepụta impedance njirimara mmepụta.

Ijikwa nsogbu impedance

1. Banyere akara njikwa nke impedance, enwere ike nweta ihe nchịkwa chọrọ site na mgbanwe mgbanwe na mmepụta.

2. Mgbe lamination na mmepụta, a na-egbutu osisi ma nyochaa ya.Ọ bụrụ na ọkpụkpụ nke ọkara na-ebelata, enwere ike ibelata obosara ahịrị iji mezuo ihe ndị a chọrọ;ma ọ bụrụ na ọkpụrụkpụ dị oke oke, ọla kọpa nwere ike ịgbatị iji belata uru impedance.

3. N'ime ule ahụ, ọ bụrụ na e nwere ọtụtụ ọdịiche dị n'etiti ozizi na eziokwu, nnukwu ihe nwere ike ime bụ na enwere nsogbu na nhazi injinia na nhazi ule ule.


Oge nzipu: Nov-19-2021