Kule post, siza kuphonononga i-pinout, umsebenzi, kunye ne-schematics yoqhagamshelwano lwe Uln2003, kunye nomzekelo wesicelo, ngaphezu komsebenzi wayo njengomlawuli we-relay. Ngaloo ndlela songeza elinye icandelo elitsha kuluhlu lwethu olude yezixhobo ezibonisiweyo.
Uyifunela ntoni i-ULN2003?
Iyunithi yolawulo enye ineseti ye imisebenzi yokulawula ezilawula amanqanaba ombane kumagalelo abo kunye neziphumo, kunye nezibali-xesha, PWM, ukuphazamisa, kunye neendlela zokutshintsha. Le misebenzi yokulawula ivumela ukuba sivelise imisebenzi emininzi ngaphandle kokuphazamisa yonke isiphaluka somlawuli. Ukuvelisa imisebenzi emininzi, isilawuli esilula kunye neprosesa yasetyenziswa. Ingxaki yayikukucutha isekethe yezixhobo zangoku zamandla ombane aphezulu.
Los iinjini ze-dc Amandla ombane aphezulu aye asetyenziswa ngokubanzi ngenxa yokusebenza kakuhle kwamandla. Ingxaki yayiyindlela yokulawula kunye nokunciphisa umjikelezo wezixhobo zombane ophezulu we-DC. Ukulawula imithwalo ye-DC ephezulu ye-voltage ukuya kwi-50 V kunye ne-500 mA, isekethe ye-logic kunye ne-Darlington transistor (NPN) isetyenziswe. Esi sekethi sasikwazi ukulawula umthwalo omnye kuphela. Ukusombulula le ngxaki, ii-ULN2003 ICs zaziswa.
Yintoni i-ULN2003?
Le IC inokhetho olubanzi lwezicelo. Inokulawula ukuya kuthi ga kwimithwalo esixhenxe ngexesha elinye usebenzisa iitransistor ezisixhenxe zaseDarlington. I-ULN2003 ifumaneka kwiindidi zephakheji ezahlukeneyo ezifana neSOP, PDIP, TSSOP, kunye ne-SOIC. I-ULN2003 iqulethe izikhonkwane ezisixhenxe eziphumayo ezinokuthi zisetyenziswe ngokuzimeleyo kwimibhobho yokufaka ukwenza i-transistor circuit. I-IC iyahambelana nayo nayiphi na isiphaluka ngaphandle kokuthatha indawo eninzi.
Ekubeni i-voltage ye-output izimeleyo kwi-voltage yegalelo, inokusetyenziswa kuyo nayiphi na isiphaluka njenge-microcontroller okanye i-microprocessor. Uluhlu lwe-voltage yemithwalo yi-50V, kodwa uluhlu lwangoku luyi-500mA. Olu luhlu lunokwandiswa ukuba izikhonkwane zemveliso ezininzi zisetyenziswa. I-ULN2003 ikhuselwe kwii-counter frequencys kwaye iye inkqubo yokukhusela yangaphakathi ngokuchasene ne-recoil ukukhusela isixhobo.
Iimpawu ze-ULN2003
Ewe ezona zinto zibalaseleyo ze-ULN2003 zezi:
- Iyakwazi ukuphatha i-voltages ukuya kwi-50V (kukho iinguqulelo ezinokunyamezela ukuya kwi-100V).
- Ikhoyo ngoku enokuthi iphathwe ukuya kuthi ga kwi-500mA ngegalelo ngalinye.
- Ibandakanya i-diode yokuqhwaba yangaphakathi ukukhusela isixhobo.
- Kananjalo inokhuseleko lwenkqubo ye-flyback yangaphakathi kunye nephini enye ingasetyenziselwa ukutshaja inductive.
- Inokuhlanganiswa ngokugqibeleleyo kunye ne-microcontrollers kunye neebhodi zohlobo lwe-Arduino.
- Iyahambelana ne-TTL logic kunye ne-5v CMOS.
- I-chip ye-ULN2003 inokuza kwiiphakheji ezahlukeneyo ezifana ne-SOP, i-TSSOP, i-PDIP, njl.
- Ngokubanzi, kwimarike iza nezinye izinto ezongezelelweyo ezifakwe kwimodyuli ukuququzelela unxibelelwano.
Phina
Itshiphu ye-DIP ye-ULN2003 yenziwe Iiplini ze16. Olu luthotho lwamagalelo kunye neziphumo endizichazayo apha:
- Igalelo 1: Le pin isetyenziselwa ukulawula imveliso ehambelanayo (imveliso 1). Ukuba iphezulu (5v) ngoko kuya kubakho imveliso, ngaphandle koko akuyi kubakho.
- Igalelo 2: Kuyafana nalapha ngasentla, kodwa kuchaphazela imveliso yesi-2.
- Igalelo 3: ngokufanayo, kulo mzekelo kwimveliso 3.
- Igalelo 4: ngokufanayo, kwimveliso 4.
- Igalelo 5: ditto, kule meko imveliso 5.
- Igalelo 6: njengasentla, kodwa kwimveliso 6.
- Igalelo 8: iyafana kodwa isetyenziswe kwimveliso yesi-7.
- GND: Le pin number 8 isetyenziselwa umhlaba kwaye iya kudityaniswa nombane.
- I-COM: Le phini inokusebenza imisebenzi emininzi. Isetyenziswa ngokubanzi njengephini lokuvavanya ukuvula zonke iziphumo. Isenokusetyenziswa kwakhona njengomthwalo okhuthazayo.
- Imveliso ye-7: yimveliso elawulwa yi-input 7 kunye naluphi na umthwalo we-50V kunye ne-500mA unokudibaniswa.
- Isiphumo sesi-6: Kuyafana nangasentla, kodwa kuchatshazelwa ligalelo 6.
- Imveliso 5: iyafana, kodwa ehambelana negalelo 5.
- Imveliso yesi-4: iyafana nale ingasentla, kodwa ilawulwa ligalelo 4.
- Imveliso yesi-3: iyafana ncakasana, kodwa yile ihambelana negalelo lesi-3.
- Imveliso 2: njengasentla, kodwa ihambelana negalelo lesi-2.
- Imveliso 1: ilawulwa yi-input 1, kodwa ineempawu ezifanayo njengezo zangaphambili.
Njengoko ubona, amagalelo kunye neziphumo zibuyiselwa umva ngolandelelwano, ke qaphela oku. Ukuze ufumane inkcazelo engakumbi, unokukhuphela ugcino lwedatha umenzi apho uthenge khona i-ULN2003 chip okanye imodyuli.
Izicelo
Abanye be ezona zicelo zibalaseleyo yale chip ingaba:
- Umlawuli ukuya kuthi ga kwi-7 relays okanye iimotor stepper.
- Lawula imithwalo ye-inductive.
- Lawula umthwalo ophezulu izibane ze-LED.
- Inokusetyenziswa njengesithinteli sengqiqo kwiisekethe ezininzi zedijithali.
- Etc
Isetyenziswa njani i-ULN2003
Ukuthenga phi
Ukuba ufuna Thenga enye yezi ULN2003, unokhetho oluninzi, mhlawumbi uyithenge kwimodyuli okanye uthenge itshiphu yodwa. Bakwathengisa iikhithi ezineenjini kunye nezihlanganisi ezifunekayo ukuze uqalise. Ukhetho lolwakho. Kuyo nayiphi na imeko, zibiza kakhulu. Nazi ezinye iingcebiso:
