Dab tsi yog Txoj Cai Ua Haujlwm ntawm Inverter
Mar 14, 2023| Ib qho inverter yog DC rau AC transformer, uas yog qhov ua tau zoo ntawm kev hloov hluav taws xob nrog lub converter.
Lub inverter converter converts AC voltage ntawm daim phiaj fais fab mus rau hauv ib qho ruaj khov 12V DC tso zis, thaum lub inverter converts 12V DC voltage tso zis los ntawm lub adapter rau hauv high-frequency high-voltage AC; Ob qho tib si kuj siv tau siv Pulse Width Modulation (PWM) technology. Lub hauv paus tseem ceeb yog tag nrho cov PWM kev sib xyaw ua ke, nrog lub adapter siv UC3842 thiab inverter siv TL5001 nti. Qhov ua haujlwm voltage ntau ntawm TL5001 yog 3.6-40V, thiab nws tau nruab nrog qhov yuam kev amplifier, lub regulator, oscillator, PWM generator nrog rau qhov chaw tuag, tiv thaiv hluav taws xob tsawg, thiab luv luv tiv thaiv Circuit Court.
Input interface ib feem: Cov tswv yim ib feem muaj 3 lub teeb liab, 12V DC input VIN, ua hauj lwm pab voltage ENB, thiab vaj huam sib luag tam sim no tswj teeb liab DIM. VIN yog muab los ntawm lub adapter, thiab ENB voltage yog muab los ntawm MCU ntawm lub motherboard, nrog tus nqi ntawm 0 lossis 3V. Thaum ENB=0, lub inverter tsis ua hauj lwm, thaum thaum ENB=3V, lub inverter nyob rau hauv ib txwm ua hauj lwm lub xeev; Lub DIM voltage yog muab los ntawm lub motherboard, nrog rau qhov sib txawv ntawm 0-5V. Qhov sib txawv DIM qhov tseem ceeb tau rov qab mus rau qhov kev tawm tswv yim kawg ntawm PWM maub los, thiab qhov tam sim no muab los ntawm inverter rau lub load kuj yuav txawv. Qhov me dua tus nqi DIM, qhov ntau dua qhov tso zis tam sim no los ntawm inverter.
Voltage pib Circuit Court: ENB yog nyob rau hauv high voltage, thiab lub inverter outputs high voltage mus teeb lub backlight raj ntawm lub vaj huam sib luag.
PWM maub los: Nws muaj cov haujlwm hauv qab no: sab hauv siv voltage, yuam kev amplifier, oscillator thiab PWM, overvoltage tiv thaiv, undervoltage tiv thaiv, luv Circuit Court tiv thaiv, thiab tso zis transistor.
DC hloov dua siab tshiab: Ib qho hluav taws xob hloov hluav taws xob tsim los ntawm MOS hloov raj thiab lub zog cia inductors. Lub input mem tes yog amplified los ntawm lub laub-rub amplifier tsav lub MOS raj los ua kev hloov pauv, ua rau DC voltage kom them thiab tso tawm cov inductor, kom lwm qhov kawg ntawm inductor tuaj yeem tau txais AC voltage.
LC oscillation thiab tso zis Circuit Court: Xyuas kom qhov yuav tsum tau voltage ntawm 1600V rau lub teeb pib, thiab txo qhov voltage mus rau 800V tom qab teeb pib.
Tawm tswv yim voltage: Thaum lub load ua hauj lwm, lub tswv yim sampling voltage plays lub luag hauj lwm nyob rau hauv stabilizing lub voltage tso zis ntawm lub inverter.