Mubvunzo: Zvirokwazvo kuramba kwetambo yemhangura ipfupi mune diki yechiratidzo haina kukosha?

A: When the conductive band of Pcb bhodhi inoitwa yakafara, iko kukanganisa kwekuwana kuchaderedzwa. Mumatunhu eanalogog, zvinowanzo sanganisira kushandisa bhendi rakakura, asi vagadziri vePCB (uye maPCB vagadziri) vanosarudza kushandisa hushoma bhendi upamhi kufambisa chiratidzo kuisirwa mutsetse. Mukupedzisa, zvakakosha kuti uverenge kushomeka kweiyo conductive bhendi uye woongorora basa rayo mumatambudziko ese anogona kuitika.

Mubvunzo: Sezvambotaurwa pamusoro pevashori vanopokana, panofanira kunge paine vamwe vanopikisa vane mashandiro avo chaizvo izvo zvatinotarisira. Chii chinoitika kurwisa kwechikamu chetambo?

A: Mamiriro acho akasiyana. Iwe urikureva kune conductor kana inoitisa bhendi muPCB inoshanda se conductor. Sezvo nzvimbo-tembiricha superconductors isati yavapo, chero huremu hwesimbi waya inoshanda seyepasi-kuramba resistor (iyo inoshandawo se capacitor uye inductor), uye mhedzisiro yayo padunhu inofanirwa kutariswa.

Chii chakashata nePCB wiring

Mubvunzo: Pane dambudziko here neiyo capacitance yeiyo conductive bhendi ine yakawandisa upamhi uye iyo simbi yakatetepa kumusana kwePRINTED redunhu bhodhi?

A: Mubvunzo mudiki. Kunyangwe capacitance kubva kune inoitisa bhendi yePRINTED redunhu bhodhi yakakosha, inofanirwa kugara ichifungidzirwa kutanga. Kana iyi isiri iyo kesi, kunyangwe yakafara conductive bhendi ichiumba yakakura capacitance harisi dambudziko. Kana matambudziko akamuka, diki nzvimbo yepasi ndege inogona kubviswa kudzikisa iyo capacitance pasi.

Mubvunzo: Ndeipi ndege yekumhara?

A: Kana yemhangura foil parutivi rwese rwePRINTED redunhu bhodhi (kana iyo yakazara interlayer ye multilayer yakadhindwa redunhu bhodhi) inoshandiswa kugadzika, saka izvi ndizvo zvatinodaidza kuti ndege yekumisikidza. Chero waya yepasi inofanira kurongedzwa nediki diki inogoneka kuramba uye inductance. Kana sisitimu ikashandisa ndege yekumhara, kashoma kuti ikanganiswe neruzha rwepasi. Uye iyo yekumisikidza ndege ine basa rekudzivirira uye kupisa kupisa.

Mubvunzo: Ndege yekumisikidza yataurwa pano yakaoma kumugadziri, handizvo here?

A: Paive nemamwe matambudziko makore makumi maviri apfuura. Nhasi, nekuda kwekuvandudzwa kwe binder, solder kuramba uye tekinoroji yesimbi yekudhizaina mumapuraneti edhiraini, kugadzirwa kwenhandare yendege rave chiitiko chenguva dzose yemabhodhi wedunhu akadhindwa.

Mubvunzo: Iwe wakati hazvigoneke kuti system iiswe pachena kune ruzha rwepasi uchishandisa ndege yepasi. Chii chinosara padambudziko repasi pasi risingakwanise kugadziriswa?

A: Kunyangwe paine ndege yepasi, kuramba kwayo uye inductance hazvisi zero. Kana iyo yekunze sosi yazvino yakasimba zvakakwana, inokanganisa iyo chaiyo chiratidzo. Dambudziko iri rinogona kudzikiswa nekunyatso rongedza mapuraneti edunhu akakwenenzverwa kuitira kuti yakakwira yazvino isayerere ichienda kunzvimbo dzinokanganisa magetsi emagetsi. Dzimwe nguva kutyora kana kutsemura mundege yepasi kunogona kutsausa hwaro hwenzvimbo hombe kubva panzvimbo yakaoma, asi kumanikidza kushandura ndege yepasi kunogona kutsausa chiratidzo kuti chiuye munzvimbo yakaoma, saka maitiro akadaro anofanira kushandiswa nehanya.

Mubvunzo: Ndinoziva sei kudonha kwemagetsi kunoitwa mundege yakadzika?

A: Kazhinji kudonha kwemagetsi kunogona kuyerwa, asi dzimwe nguva kunogona kuverengerwa zvichienderana nekushomeka kwenzvimbo dzakadzika dzendege uye kureba kweiyo conductive bhendi kuburikidza iyo yazvino kufamba, kunyangwe kuverenga kwacho kungave kwakaomarara. Zvishandiso zvemidziyo zvinogona kushandiswa kumagetsi muDC kusvika pasi frequency (50kHz) renji. Kana iyo gudzazwi yepasi yapatsanuka kubva pasimba rayo remagetsi, iyo oscilloscope inofanira kunge yakabatana nesimba remagetsi wedunhu remagetsi rinoshandiswa.Akatungamira mwenje

Kuramba pakati pemamwe mapoinzi maviri mundege yepasi kunogona kuyerwa nekuwedzera chiongorori kumapoinzi maviri. Iko kusanganiswa kwekuwedzera gudziro uye oscilloscope senzwi inogonesa kuyerwa kwekuyera kusvika 5μV / div. Ruzha kubva kumagudzazwi rwuchawedzera hupamhi hweiyo oscilloscope waveform curve neinenge 3μV, asi zvichiri kukwanisika kugadzirisa resolution ye1μV, inokwana kusiyanisa ruzha rwepasi kusvika pa80% kuvimba.

Mubvunzo: Ungayera sei ruzha rwakanyanya rwekutambisa ruzha?

A: Izvo zvakaoma kuyera hf pasi ruzha ine yakakodzera wideband zvishandiso gudzazwi, saka hf uye VHF passive probes akakodzera. Inosanganisira ferrite magnetic ring (yekunze dhayamita ye6 ~ 8mm) ine mairi maviri e6 ~ 10 anotendeuka imwe neimwe. Kuti ugadzire yakakwira-frequency yekuzviparadzanisa shanduri, imwe coil inosunganidzwa kune iyo yekuyera yekuongorora yekuisa uye imwe kune yekuongorora. Iyo bvunzo nzira yakafanana neyepasi frequency kesi, asi iyo spectrum analyzer inoshandisa amplitude-frequency hunhu mamakureti anomiririra ruzha. Kusiyana nenguva yedome zvivakwa, sosi sosi dzinogona kusiyaniswa zviri nyore zvichibva pahunhu hwadzo. Uye zvakare, kunzwisisika kweiyo spectrum analyzer ingangoita 60dB yakakwira kupfuura iyo ye Broadband oscilloscope.