1. Chip ndi pulogalamu
1. Tchipisi za EPROM nthawi zambiri sizoyenera kuwonongeka.Chifukwa chip chamtunduwu chimafunika kuwala kwa ultraviolet kuti chifufute pulogalamuyo, sichingawononge pulogalamuyo panthawi ya mayeso.Komabe, pali chidziwitso: chifukwa cha zinthu zomwe zimagwiritsidwa ntchito popanga chip, pamene nthawi imadutsa Nthawi Yaitali), ngakhale ngati sichikugwiritsidwa ntchito, ikhoza kuonongeka (makamaka imatanthawuza pulogalamu).Choncho m'pofunika kuchirikiza izo mmene ndingathere.
2. EEPROM, SPROM, etc., komanso chips RAM ndi mabatire, n'zosavuta kwambiri kuwononga pulogalamu.Kaya tchipisi zotere zidzawononga pulogalamuyo mutagwiritsa ntchitokusanthula ma curve a VI sikunatsikebe.Komabe, anzathu Tikakumana ndi zoterezi, ndi bwino kusamala.Wolembayo wachita zoyesera zambiri, ndipo chifukwa chake ndi: kutayikira kwa chipolopolo cha chida chokonzekera (monga tester, chitsulo chosungunula magetsi, etc.).
3. Kwa chip ndi batri pa bolodi lozungulira, musachichotse pa bolodi mosavuta.
2. Bwezerani dera
1. Pakakhala gawo lalikulu lophatikizika pa bolodi loyenera kukonzedwa, chidwi chiyenera kuperekedwa ku vuto lokonzanso.
2. Musanayambe kuyesa, ndi bwino kubwezeretsanso chipangizocho, kuyatsa ndi kutseka makina mobwerezabwereza ndikuyesa.Ndipo dinani batani lokonzanso kangapo.
3. Ntchito ndi mayeso a parameter
1.imatha kuwonetsa malo odulidwa, malo okulitsa ndi malo odzaza pamene azindikira chipangizocho.Koma sichingayeze zinthu zenizeni monga kuchuluka kwa magwiridwe antchito komanso liwiro.
2. Momwemonso, kwa TTL tchipisi ta digito, kusintha kokha kotuluka kwa milingo yayikulu ndi yotsika kumatha kudziwika, koma kuthamanga kwa m'mphepete mwake kukwera ndi kugwa sikungadziwike.
4. Crystal oscillator
1. Kawirikawiri ndi oscilloscope yokha (crystal oscillator iyenera kuyendetsedwa) kapena mita yafupipafupi ingagwiritsidwe ntchito poyesa, ndipo multimeter singagwiritsidwe ntchito poyeza, mwinamwake njira yoloŵa m'malo ingagwiritsidwe ntchito.
2. Zolakwika zofala za crystal oscillator ndi: a.kuwonongeka kwamkati, b.chigawo chotseguka chamkati, c.kusintha kwafupipafupi kupatuka, d.kutayikira kwa zotumphukira zolumikizidwa capacitor.Chochitika cha kutayikira apa chiyenera kuyezedwa ndi ma curve a VI.
3. Njira ziwiri zoweruzira zingagwiritsidwe ntchito pamayeso onse a bolodi: a.Pakuyesa, tchipisi tating'ono pafupi ndi kristalo oscillator zimalephera.b.Palibe zolakwika zina zomwe zimapezeka kupatula crystal oscillator.
4. Pali mitundu iwiri yodziwika bwino ya ma crystal oscillators: a.zikhomo ziwiri.b.zikhomo zinayi, zomwe pini yachiwiri imayendetsedwa, ndipo chidwi sichiyenera kufupikitsidwa pakufuna.Asanu.Kugawidwa kwa zochitika zolakwika 1. Ziwerengero zosakwanira za mbali zolakwika za gulu la dera: 1) kuwonongeka kwa chip 30%, 2) zowonongeka zowonongeka 30%,
3) 30% ya mawaya (PCB waya wokutira wamkuwa) wathyoka, 4) 10% ya pulogalamuyo yawonongeka kapena yatayika (pali njira yokwera).
2. Zitha kuwoneka kuchokera pamwambapa kuti pakakhala vuto ndi kugwirizana ndi pulogalamu ya bolodi la dera kuti ikonzedwe, ndipo palibe bolodi yabwino, osadziwika bwino ndi kugwirizana kwake, ndipo sangathe kupeza pulogalamu yapachiyambi, zotheka. za kukonza bolodi si zazikulu.
Nthawi yotumiza: Mar-06-2023