Riba:
- Ability don warware matsalar da'ira zuwa zato, dabaru da matakan naúrar kuma tambayi AI ta hanyar da aka tsara.
- Ability don tabbatar da AI shawarar juriya, iyawa da samun ƙima a kan daidaitattun jerin da iyakokin iko
- Ikon kama kurakuran ilmin lissafi da topology ta hanyar bincika fitar AI tare da SPICE ko lissafin hannu
Binciken kewayawa shine kashin bayan injiniyan lantarki da lantarki: farawa daga dokokin Ohm da Kirchhoff da kuma fadada zuwa masu rarrabawa, masu tacewa, amplifiers da hanyoyin samar da kayayyaki. AI na iya zama taimako mai ƙarfi a cikin waɗannan ayyuka; Yana ƙirƙira dalla-dalla, yana haifar da lamba ta farko, yana ba da shawarar madadin topologies, har ma yana rubuta jerin abubuwan SPICE. Amma AI baya "fahimtar" da'ira; ya kammala tsari. Sabili da haka, ƙimar juriya da yake ba da shawarar bazai kasance a cikin daidaitaccen jerin ba, yana iya wuce iyakar wutar lantarki, ko kuma yana iya saita topology ba daidai ba. A cikin wannan rukunin, za mu ga yadda za a tambayi matsalar da'ira ga AI ta hanyar da aka tsara, yadda za a tabbatar da fitarwa tare da lissafin hannu da SPICE, da kuma mafi yawan matsaloli.
Kafa Matsala Daidai: Zato, Formula, Unit
Kafin jefa matsalar da'ira a AI, raba shi zuwa sassa uku: sanannun (sarrafawa), da ake so (fitarwa), da ƙuntatawa (ikon, ƙarfin lantarki, daidaitaccen jerin). Wannan bambance-bambancen duka yana fayyace faɗakarwa kuma yana sa abin sarrafawa ya zama abin sarrafawa.
Misali na al'ada: resistor jerin don fitar da LED daga wadatar 5V. Sanannen: wadata 5 V, wutar lantarki na gaba na LED V_F ≈ 2.0 V, halin yanzu I = 10 mA. Bincika: R. Tsarin tsari mai sauƙi ne:
R = (V_supply - V_F) / IR = (5.0 - 2.0) / 0.010 = 300 Ω Rashin wutar lantarki: P = I² · R = (0.010)² · 300 = 0.03 W → 1/8 W ya wadatar
300 Ω yana samuwa a cikin ma'auni na E24. Idan ba haka ba, za mu zagaya zuwa madaidaicin ƙimar mafi kusa (misali 330 Ω) kuma duba yadda canje-canje na yanzu: I = (5−2)/330 ≈ 9.1 mA. Wannan shine ainihin kwararar da za a bi yayin tabbatar da fitarwa na AI: dabara → lamba → daidaitaccen jerin → duba wutar lantarki.
Tukwici: Lokacin da kuka sami juriya ko ƙimar ƙarfi daga AI, koyaushe ku tambayi abubuwa biyu: "Shin ana samun wannan ƙimar a cikin jerin E12/E24/E96?" da "Shin ƙimar ƙarfin / ƙarfin lantarki na wannan bangaren ya wadatar?" AI sau da yawa yana dawo da kyawawan dabi'u, waɗanda ba a samarwa ba.
Rauni Mai Sauƙi / Ƙarfi Mai ƙarfi
RAUNIYA: "Lissafi juriya ga LED." (Sakamakon: wanda LED, wanda wadata, wanda halin yanzu ba shi da tabbas; lamba ɗaya.) KARFI: "Kirga jerin juriya don fitar da ja LED a 10 mA daga samar da 5 V. LED na gaba ƙarfin lantarki ne 2.0 V. Nuna SEPARATELY: 1) Resistance dabara da sakamakon (Ω)4) Ƙimar Ƙarfin Ƙarfin Ƙarfin Ƙarfin Ƙimar Ƙarfin Ƙarfin Ƙirar Ƙimar 2 mafi kusa. na resistor da shawarar rating "Rubuta raka'a a duk matakai."
Tabbatar da Juriya, Ƙarfi, da Ƙimar Sami
Mafi yawan kuskuren AI shine yana dawo da ƙima waɗanda suke cikin lissafi "daidai" amma ba a iya amfani da su a aikace. Wuraren sarrafawa guda uku:
Standard serial iko. Resistors da capacitors ana samar da su a cikin E-jerin (E12, E24, E96...). Idan AI ya ce 4737 Ω, za ku yanke shawarar ko za ku yi amfani da 4.7 kΩ (E24) ko 4.75 kΩ (E96) dangane da haƙuri.
Ƙimar wutar lantarki da ƙarfin lantarki. Ikon da resistor ke watsawa yana da mahimmanci kamar darajarsa. Jurewar wutar lantarki na capacitor yana da mahimmanci kamar ƙarfinsa. AI yana tsallake waɗannan mafi yawan lokaci.
Gain da bandwidth. A cikin da'irar op-amp, AI na iya ba da riba azaman R_f/R_in amma watsi da iyakar riba-bandwidth samfurin (GBW). Idan kuna son samun 100x tare da op-amp tare da 1 MHz GBW, bandwidth ɗin shine kawai 10 kHz.
bangaren
da AI
Ƙarin sarrafawa
Juriya
Darajar (Ω)
E-jerin, asarar wuta (I²R)
capacitor
Darajar (F)
Ƙarfin ƙarfi, nau'in ( yumbu / electrolytic)
Op-amp riba
R_f/R_in
GBW, adadin kashewa, tazarar ciyarwa
Tace
mitar yankewa
Haƙuri na zahiri na zahiri, tasirin kaya
Tabbatarwa tare da SPICE da Lissafin Hannu
Kafin amincewa da da'irar da aka samar da AI, gwada ta ta hanyoyi masu zaman kansu guda biyu: lissafin hannu (tabbatacciyar cak) da simulation SPICE (cikakken dubawa). AI na iya ma rubuta muku jerin abubuwan SPICE; amma aikinku ne don gudanar da jerin ayyukan yanar gizo da fassara sakamakon.
Misalin matatar ƙarancin wucewar RC: R = 1.6 kΩ, C = 100 nF. Yanke mita:
f_c = 1 / (2π · R · C) f_c = 1 / (2π · 1600 · 100e-9) f_c ≈ 995 Hz ≈ 1 kHz
Idan ka duba da'irar guda ɗaya tare da nazarin AC a cikin SPICE kuma ka ga cewa -3 dB batu yana a ~ 1 kHz, hanyoyin biyu suna haɗuwa kuma amincewa yana ƙaruwa. Idan ba su zo kan juna ba, akwai kuskure a cikin lissafin hannu ko jerin layi; Kuna kora duka.
* AI ta ba da shawarar RC tace netlist (duba!)V1 a cikin 0 AC 1R1 a cikin 1.6kC1 fita 0 100n.ac dec 100 10 100k.end
Hankali: Bi hanyar haɗin sunaye a cikin jerin layin SPICE da AI ta rubuta. Kuskuren gama gari shine haɗa wani sashi zuwa kumburi mara kuskure ko manta kullin ƙasa (0). Ko da netlist ɗin ya bayyana yana "aiki" yana iya yin kwaikwayon da'ira mara kyau.
Kama Kurakurai na Topology
Wani lokaci AI yana ba da ƙimar ɓangaren daidai amma yana saita topology ba daidai ba: haɗa ƙafar ra'ayi a baya, tuki op-amp daga shigar da ba daidai ba, ko manta da madaidaicin madaidaicin wadatar. Hanyar kama waɗannan shine ka sake zana kewaye da hannunka kuma ka bi kumburin kumburi. "Abin da AI ya ce" ba ya ba da hujjar topology; Dole ne ku tabbatar da dabarun aiki na kewaye.
Mini Case
Mai zanen Analog Kaan yana da jujjuyawar op-amp da aka ƙera don ƙara siginar firikwensin. AI yana ba da shawarar R_in = 1 kΩ da R_f = 220 kΩ; riba -220. Kaan yana duba bayanan bayanan: GBW na zaɓaɓɓen op-amp shine 1 MHz. A 220 riba bandwidth ana barin kawai a ~ 4.5 kHz, yayin da yana buƙatar wuce siginar har zuwa 20 kHz. Kaan ko dai ya zaɓi op-amp mai girma GBW ko kuma ya raba ribar zuwa matakai biyu. AI ya sami lissafi daidai; Amma Kaan ya kai iyakar jiki. Darasi: dabarar ribar AI na iya zama daidai, amma kuna sarrafa ainihin iyakar abin da ke cikin bayanan.
Kuskuren gama gari
- Yin amfani da ƙimar da AI ke bayarwa ba tare da la'akari da ko yana cikin ma'auni ba ko a'a.
- Yin watsi da ɓatar da wutar lantarki da ƙarfin ƙarfin capacitor.
- Ana ƙididdige ribar op-amp da manta da ƙimar GBW/slew.
- Amincewa da sakamakon ba tare da tabbatar da gani na SPICE netlist ba.
- Ketare kumburin ƙasa ko kewaye capacitor.
- Yarda da topology ba tare da tambaya ba, "Haka AI ta gina shi."
A takaice
- Matsala da aka tsara zuwa AI ta hanyar raba matsalar da'ira zuwa zato, nema da takurawa.
- Tabbatar da kowane juriya/ƙimar iya aiki tare da daidaitaccen jeri, ƙarfi da ƙimar ƙarfin lantarki.
- Bincika iyakoki na zahiri kamar GBW, kashe kisa da gibin ciyarwa a lissafin riba.
- Tabbatar da fitowar AI ta lissafin hannu da SPICE ta hanyoyi masu zaman kansu guda biyu.
- Kula da netlist da topology kumburi ta kumburi; Kuskuren gama gari shine haɗin da ba daidai ba.
- Ko da math ɗin daidai ne, injiniyan yana tabbatar da iyaka na zahiri da topology.
Aikin aikace-aikace
Zaɓi kewayawa mai sauƙi (Tace RC, mai rarraba wutar lantarki ko ƙarawa mai juyawa). Tambayi AI don ƙimar abubuwan da aka haɗa da jerin layin SPICE. Sa'an nan: (1) da hannu lissafta cutoff mita/riba/fitarwa, (2) gudanar da netlist a cikin wani SPICE kayan aiki, (3) kwatanta sakamakon biyu da ko zaɓaɓɓen aka gyara suna cikin daidaitattun jerin. Idan kun sami rashin daidaituwa, gano tushen sa (formula, netlist daurin, ko zagaye darajar) kuma gyara shi.