Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub inverter yog tswj kev ua haujlwm ntawm tag nrho cov kab ke los ntawm kev tswj Circuit Court. Lub inverter Circuit Court ua kom tiav cov haujlwm ntawm kev hloov tam sim no ncaj qha mus rau alternating tam sim no, thiab lim Circuit Court yog siv los lim tawm cov cim tsis xav tau.
Kev ua haujlwm ntawm inverter Circuit Court kuj tuaj yeem ua kom zoo raws li hauv qab no: ua ntej, lub oscillating circuit converts direct tam sim no rau alternating tam sim no; thib ob, lub kauj boosts qhov tsis xwm yeem alternating tam sim no rau hauv square wave alternating tam sim no; thaum kawg, rectification ua rau alternating tam sim no mus rau hauv ib tug sine wave alternating tam sim no los ntawm ib tug square nthwv dej.
Lub hauv paus ntsiab lus ua haujlwm ntawm txhua qhov ntawm lub inverter
1. Input interface ib feem: Qhov input part muaj 3 teeb liab, 12V DC input VIN, ua hauj lwm pab kom voltage ENB thiab vaj huam sib luag tam sim no tswj teeb liab DIM. VIN yog muab los ntawm Adapter, thiab ENB voltage yog muab los ntawm MCU ntawm lub motherboard, thiab nws tus nqi yog 0 lub 3v. Thaum ENB = 0, lub inverter tsis ua haujlwm, thiab thaum ENB = 3V, lub inverter yog nyob rau hauv ib txwm ua hauj lwm lub xeev; thaum lub DIM voltage muab los ntawm lub ntsiab board, qhov sib txawv ntawm qhov sib txawv ntawm 0-5V. Qhov sib txawv DIM qhov tseem ceeb yog pub rov qab mus rau lub tswv yim davhlau ya nyob twg ntawm PWM maub los. Tam sim no muab los ntawm inverter rau lub load kuj yuav txawv. Qhov tsawg dua tus nqi DIM, cov zis tam sim no los ntawm inverter. Qhov loj dua.
2. Voltage pib Circuit Court: Thaum ENB nyob rau theem siab, nws outputs high voltage mus teeb lub vaj huam sib luag lub backlight raj.
3. PWM controller: Nws muaj cov haujlwm hauv qab no: internal reference voltage, yuam kev amplifier, oscillator and PWM, tiv thaiv overvoltage, under-voltage tiv thaiv, tiv thaiv luv luv, tso zis transistor.
4. DC conversion: Kev hloov hluav taws xob hloov hluav taws xob yog tsim los ntawm MOS hloov raj thiab lub zog cia inductor. Lub input mem tes yog amplified los ntawm lub laub-rub amplifier thiab ces tsav lub MOS raj mus hloov, yog li ntawd DC voltage tuaj yeem them thiab tso tawm cov inductor, kom lwm qhov kawg ntawm qhov inductor tuaj yeem tau txais AC voltage.
5. LC oscillation thiab tso zis Circuit Court: los xyuas kom meej 1600V voltage xav tau rau lub teeb pib, thiab txo qhov voltage mus rau 800V tom qab lub teeb pib.
6. Tawm tswv yim voltage: Thaum lub load ua haujlwm, tus qauv voltage yog pub rov qab rau stabilize qhov voltage tso zis ntawm lub inverter
