Kev hloov pauv hauv DC fais fab mov tso zis
DC fais fab mov yog ib qho khoom siv hluav taws xob uas nquag siv, uas ua kom muaj qhov hluav taws xob ruaj khov thaum cov kab hluav taws xob hloov pauv lossis hloov pauv. Ib qho tsis tshua muaj ripple, high precision voltage regulator qhov chaw muaj qhov tseem ceeb ntawm kev siv hauv kev ntsuas, kev tswj hwm kev lag luam thiab kev ntsuas. Qhov kev tsim ntawm no tsim nrog lub transformer tso zis ntawm ob pawg ntawm 17.5V AC winding, tsim ntawm peb tswj fais fab mov, ob tug uas 3V -15V adjustable, lwm pab pawg neeg ntawm tsau tso zis +5V ; rated kev khiav hauj lwm tam sim no ntawm 1.2A, thiab muaj ib tug "+", "-" kauj ruam voltage Adjustment muaj nuj nqi, yam tsawg kawg nkaus kauj ruam ntawm 0.12V, ripple yam tsis ntau tshaj 4%. Thiab muaj cov potentiometer X9318 los kho cov chav siv hluav taws xob hloov hluav taws xob los tsim kom muaj kev ntseeg siab, me me ripple thiab siab precision voltage tswj DC adjustable voltage regulator fais fab mov Circuit Court thiab microcontroller tswj.
Kev sib xyaw:
1, lub hwj chim transformer yuav yog 220V, 50Hz AC voltage mus rau hauv ib tug tsawg voltage AC voltage thiab tso zis DC voltage yog roughly sib npaug.
2, rectifier Circuit Court siv lub diode lub unidirectional conductivity ntawm low-voltage alternating tam sim no mus rau hauv ib tug unidirectional pulsating voltage, yuav ua tau ib nrab-yoj, tag nrho-yoj rectifier ntsiab lus.
3, lim Circuit Court siv impedance yam ntxwv ntawm inductance thiab capacitance, rectified unidirectional pulsating tam sim no nyob rau hauv lub AC tivthaiv lim tawm, lub unidirectional pulsating tam sim no mus rau ib tug du DC tam sim no.
4, voltage regulator Circuit Court thaum daim phiaj voltage hloov los yog load hloov yuav ua rau loads ntawm DC lub hwj chim tau txais ntawm qhov tsis ruaj tsis khov, cuam tshuam rau kev ua tau zoo ntawm cov khoom siv hluav taws xob, nrog rau lub zog hluav taws xob tswj lub raj, uas yog, kev siv ntau cov lus tawm tswv yim tsis zoo. txoj kev tswj lub voj voog, kom nws tuaj yeem kho qhov tsis ruaj khov yam thiaj li tau txais qhov ruaj khov voltage.
Cov kev cai yooj yim
① nrog lub transformer tso zis ntawm ob 17.5V AC winding, tus tsim ntawm peb tswj fais fab mov, ob tug uas 3V -15V adjustable, lwm yam tsau tso zis +5V;
② Qhov siab tshaj plaws tso zis tam sim no ntawm txhua pab pawg: 750 mA;
③ Kev ua tau zoo ntawm txhua pab pawg yog ntau dua 75%, ntsuas raws li cov xwm txheej ntawm 500mA cov zis, yuav tsum tau tshwj tseg hauv DC / DC input tam sim no ntsuas lub davhlau ya nyob twg;
Txhawm rau kom paub txog kev tswj hwm kev tswj hwm, MCU tswj interface yuav tsum tau tshwj tseg.
Cov zis ntawm DC fais fab mov tsis tas li, piv txwv li, thaum DC lub zog hluav taws xob ua haujlwm nyob rau hauv qhov hluav taws xob tsis tu ncua, nws cov zis hluav taws xob yuav yog vim qhov hloov pauv ntawm cov khoom siv hluav taws xob lossis vim qhov hloov pauv ntawm cov khoom siv hluav taws xob thiab cov zis hluav taws xob. tshwm sim los ntawm kev hloov ntawm cov zis voltage me ntsis, thaum lub DC fais fab mov nyob rau hauv lub tam sim no ua hauj lwm lub xeev, nws cov zis tam sim no kuj yuav yog vim qhov kev hloov ntawm cov input voltage los yog vim qhov kev hloov ntawm lub load thiab cov zis voltage. yuav tshwm sim los ntawm kev hloov ntawm cov zis voltage me ntsis.
