Ezinye izinyathelo zokuphepha zokunaka ukusebenzisa amashubhu e-MOS emsebenzini

ଲେଖକ: ଆଇଫ୍ଲୋପାୱାର - Mpamatsy tobin-jiro portable

Intuthuko yomphakathi wesintu ayinakuhlukaniswa nayo yonke imikhakha yempilo, futhi ukubuyekezwa kwemikhiqizo ehlukahlukene ye-elekthronikhi ngeke kuyivule imizamo yomklami wethu. Eqinisweni, abantu abaningi ngeke bakuqonde ukwakheka kwemikhiqizo kagesi, njenge-MOS. Ithubhu.

Ishubhu ye-MOS ibandakanyeka ekuphatheni okuhamba phambili okuvela kubathwali abaningi, ababuye baziwe ngokuthi ama-single-pole transistors. Kungokwedivayisi yokulawula i-voltage semiconductor. Inokumelana nokokufaka okuphezulu (10 ^ 7 ~ 10 ^ 12Ω), umsindo ophansi, ukusetshenziswa kwamandla okuphansi, ububanzi obuguquguqukayo obukhulu, ukuhlanganiswa okulula, akukho okwenzekayo kokuhlukana kwesibili, ububanzi bendawo yokusebenza ephephile, njll.

, manje isiyi-bipolar transistor kanye nembangi enamandla ye-Power transistor. I-MOS tubular diode (eyaziwa nangokuthi i-parasitic diode) itholakala kudivayisi yeshubhu eyodwa ye-MOS, kodwa ayikho kumjikelezo ohlanganisiwe. I-diode ingasetshenziswa ekuvikelweni okuphambene nokuqhubeka kwedrayivu yamanje ephezulu kanye nomthwalo we-inductive.

Imvamisa, ukwehla kwengcindezi yangaphambili kucishe kube ngu-0.7-1V. Njengoba i-diode ikhona, idivayisi ye-MOS ayikwazi ukumane iqonde ukusetshenziswa kwesishintshi kumjikelezo.

Isibonelo, kumjikelezo wokushaja, ukushaja kuqediwe. Ngemva kokunqamula amandla, ibhethri izohlehla. Izinyathelo zokuqapha zokusebenzisa i-MOS (1) Ukuze kusetshenziswe amashubhu e-MOS ngokuphephile, inani elilinganiselwe lamandla ayo okuhlakazeka, amandla kagesi aphezulu okukhipha amanzi, amandla kagesi omthombo omkhulu wesango, namandla aphezulu amanje aweqiwe ekwakhiweni kwesekethe.

(2) Lapho kusetshenziswa izinhlobo ezihlukahlukene zama-transistors e-MOS, kufanele axhunywe kuyisekethe ngokuhambisana ngokuqinile nokuchema okudingekile, futhi kufanele anake ukuchema kwama-MOS transistors. Isibonelo, kukhona ukuhlangana kwe-PN phakathi komthombo kanye nokukhipha ithubhu ye-MOS, futhi isango le-tube ye-N-channel alikwazi ukucindezelwa. Isango le-p-channel tube alikwazi ukuchema okungalungile, futhi lolu hlobo lokusunduza.

(3) Njengoba i-impedance yokufaka ye-MOSMOS transistor iphakeme kakhulu, iphinikhodi kufanele lifinyezwe ngesikhathi sokuthutha nokugcinwa, futhi ukupakishwa kwesihlangu sensimbi kufanele kusetshenziselwe ukuvimbela isango lokuphuka elinamandla lokungeniswa ngaphandle. Kubalulekile ukuqaphela ukuthi ishubhu le-MOSMOS alikwazi ukufakwa ebhokisini lepulasitiki. Kungcono ukuyibeka ebhokisini lensimbi.

Ngesikhathi esifanayo, qaphela ukumelana nomswakama wepayipi. (4) Ukuze kuvinjwe ukuphuka kokungeniswa kwesango lepayipi le-MOS, wonke amathuluzi okuhlola, amabhentshi okusebenzela, insimbi yokunamathisela, kanye nesekhethi ngokwayo kufanele kusekelwe kahle; uma ushisela, sicela ushiselwe kuqala. Ngaphambi kwesifunda sokuxhuma, ukuphela kwe-tube kufanele kufinyezwe komunye nomunye, futhi impahla ye-short-circuit isuswe ngemuva kwe-welding; lapho ishubhu likhishwa ohlakeni lokuhlanganisa, qinisekisa ukuthi umzimba womuntu usekelwe ngendlela efanele, isibonelo usebenzisa indandatho ephansi.

Yebo ungasebenzisa. Insimbi kagesi yokushisisa okuthuthukisiwe kulula kakhulu ukushisela ishubhu le-MOS ukuqinisekisa ukuphepha; lapho amandla engavaliwe, isibani sifakwe kumjikelezo noma kusuka kumjikelezo. Kufanele unake izinyathelo zokuphepha ezingenhla uma usebenzisa i-MOS.

(5) Lapho ufaka ishubhu le-MOS, qaphela indawo yokufaka ukuze ugweme ukusondela entweni ephehla ukushisa; ukuze uvimbele ukudlidliza kwe-tube, kuyadingeka ukulungisa izindlu zesibani. Uma umthofu wephini ugobile, ububanzi bawo kufanele bube bukhulu kunosayizi wempande ongu-5 mm ukuvimbela inaliti ukuthi igobe futhi iholele ekuvuzeni komoya. (6) Uma usebenzisa i-VMOS, kufanele kwengezwe usinki wokushisa ofanelekile.

Thatha i-VNF306 njengesibonelo, ngemva kokufaka i-radiator engu-140 × 140 × 4 (mm), amandla amakhulu angafinyelela ku-30W. (7) Ngemva kokuxhuma ubuningi bamashubhu ngokuhambisana, njengoba amandla phakathi kwama-electrode kanye nomthamo wokusabalalisa, izici zemvamisa ephezulu ye-amplifier ziyancipha, futhi i-oscillation ephezulu ye-parasitic ye-amplifier kulula ukwenzeka. Ibangelwa impendulo.

Ngakho-ke, ngokuvamile akuwona amashubhu ahlanganisiwe angu-4 ngokuhambisana, futhi i-oscillation resistor ye-parasitic ixhunywe phansi noma isango le-tube ngayinye. (8) I-voltage yomthombo wesango yeshubhu ye-MOS ayikwazi ukuhlehliswa, engagcinwa endaweni evulekile. Uma i-tube ye-MOS yesango elivinjiwe ingasetshenziswa, ngenxa yokumelana nokufaka okuphezulu, i-electrode ngayinye kufanele ibe mfushane ukuvimbela amasimu kagesi angaphandle.

Ukulimala komphumela wepayipi. (9) Lapho ushisela, i-casing yangaphandle ye-soldering iron kufanele ifakwe ngocingo lwangaphandle lwangaphandle ukuvimbela ukulimala kwepayipi ngenxa yensimbi kagesi. Ngokuphathelene nenani elincane le-welding, ungakwazi futhi ukushisa insimbi ye-solder ngaphambi kwe-welding futhi ukhiphe ipulaki noma ucime amandla.

Ikakhulukazi, lapho ushisela ishubhu ye-MOS yesango elingafakiwe, ukushisela kufanele kwenziwe ngokulandelana kwesango lokuvuza lomthombo, futhi ukushisela kufanele kunqanyulwe. (10) Uma ithengiswa nge-25W soldering iron, kufanele isheshe. Uma usebenzisa i-45~75W soldering iron, sebenzisa ama-tweezers ukuze ubambe izimpande zephini ukuze usize ukuqeda ukushisa.

I-tube ye-MOS ingasetshenziswa ukuhlola ngokufanelekile ikhwalithi yeshubhu ngefayela lokumelana namamitha (hlola ukumelana okuhle nokuhlehlayo phakathi kokuhlangana kwe-PN ngayinye kanye nokumelana phakathi kokukhipha amanzi), futhi ishubhu lomphumela wesango elihlanganisiwe alikwazi ukuhlolwa ukuze lisetshenziswe i-multimeter, kufanele isetshenziswe i-Tester. Ngaphezu kwalokho, imizila yesikhathi esifushane ye-electrode ngayinye ingasuswa kuphela ngemva kokuxhuma umhloli. Lapho uqaqa, kufanele uyifinyeze, bese uyisusa.

Okubalulekile wukuvimbela umnyango ukuthi ungantanti. Kafushane, qiniseka ukuthi ukusetshenziswa kokuphepha kokuphathwa kwe-MOS, kuyadingeka ukuthi unake izinyathelo zokuphepha ezihlukahlukene ukuze kube izinhlobonhlobo, iningi lochwepheshe abangochwepheshe, ikakhulukazi iningi labashisekeli be-electronic, kufanele baqale ngokuvumelana nesimo sabo sangempela, Thatha indlela engokoqobo, ukusetshenziswa okuphephile nokuphumelelayo kweshubhu le-MOS. .