Niaj hnub no, lub teeb txuag hluav taws xob thiab hluav taws xob ballast tshwj xeeb transistors qhia los ntawm kev lag luam tau mloog zoo rau kev tswj lub sijhawm cia. Vim tias lub sijhawm cia ts ntev dhau lawm, qhov zaus oscillation ntawm lub voj voog yuav poob, thiab qhov nce ntawm kev ua haujlwm tam sim no ntawm tag nrho lub tshuab yuav yooj yim ua rau kev puas tsuaj ntawm triode. Txawm hais tias lub choke coil inductance thiab lwm yam tsis tuaj yeem hloov kho kom tswj tau lub zog ntawm lub tshuab tag nrho, qhov tsis sib xws yuav ua rau cov khoom sib xws tsis zoo thiab kev ntseeg tau txo. Piv txwv li, nyob rau hauv lub quartz teeb hluav taws xob transformer Circuit Court, ib tug transistor nrog ib tug ntev lub sij hawm cia yuav ua rau lub Circuit Court oscillate ntawm ib tug zaus qis tshaj qhov kev khiav hauj lwm txwv ntawm cov zis transformer, uas ua rau saturation ntawm cov tub ntxhais nyob rau hauv lub kawg ntawm txhua lub voj voog. , uas ua rau transistor Ic tshwm nyob rau hauv txhua lub voj voog Spikes, thiab thaum kawg ua rau overheating thiab puas rau lub cuab yeej.
Yog hais tias lub sij hawm cia ntawm ob lub transistors ntawm tib kab sib txawv heev, lub sab sauv thiab qis ib nrab nthwv dej ntawm kev ua hauj lwm tam sim no ntawm tag nrho cov tshuab yuav hnyav asymmetrically, lub heavy-duty transistor yuav yooj yim puas, thiab cov kab yuav kuj. tsim ntau harmonics thiab electromagnetic cuam tshuam.
Kev siv tswv yim qhia tau hais tias kev tswj hwm nruj ntawm lub sijhawm cia thiab kev hloov kho kom zoo ntawm kev ua tiav Circuit Court tuaj yeem txo qhov kev cia siab ntawm hFE tsis. Nws tseem tsim nyog hais tias nyob rau hauv cov xwm txheej ntawm qee qhov chaw nti, cov yam ntxwv triode, cov yam ntxwv tam sim no thiab tiv taus qhov ntsuas hluav taws xob yog qhov tsis sib xws. Kev lag luam Suav ib zaug siv BUT11A ua 220V40W hluav taws xob ballast. Qhov pib taw tes yog tias BVceo thiab BVcbo qhov tseem ceeb yog siab. Txawm li cas los xij, nyob rau hauv feem ntau cov hluav taws xob ballast circuits, nws tsis tas yuav tsum xaiv qhov ntsuas hluav taws xob ntawm cov transistors siab dhau lawm.
