Yooj yim muab, hloov hluav taws xob hloov hluav taws xob tswj qhov hluav taws xob los ntawm kev tswj cov zaus hloov pauv, tab sis cov khoom siv hluav taws xob linear tswj qhov hluav taws xob los ntawm kev kho tus nqi tiv thaiv, uas yog piv rau kev hloov qhov hluav taws xob los ntawm kev kho cov zawv zawg rheostat. Tus nqi ntawm cov khoom siv hluav taws xob hloov pauv tau nce ua ke nrog qhov nce hauv cov zis hluav taws xob, tab sis ntawm tus nqi sib txawv ntawm cov khoom siv hluav taws xob linear dua li nws ua.
1. Ntawm qhov tso zis hluav taws xob tshwj xeeb, cov khoom siv hluav taws xob linear yog kim dua li hloov cov khoom siv hluav taws xob.
Yog li ntawd, kev hloov hluav taws xob siv thev naus laus zis tsis tu ncua ua rau kev nce qib thiab kev tsim kho tshiab nrog rau kev txhim kho thiab kev tsim kho tshiab ntawm cov tshuab hluav taws xob hluav taws xob. Hloov chaw, qhov kev txhawj xeeb ntawm tus nqi no tau hloov pauv hloov hluav taws xob thev naus laus zis mus rau qhov tso zis hluav taws xob qis kawg, muab lub zog hloov hluav taws xob rau ntau thaj chaw tshawb fawb.
2. Cov khoom siv hluav taws xob yog inextricably txuas mus rau ib qho kev cia siab rau lub hwj chim vim yog kev loj hlob nyob ze ntawm nws thiab tib neeg txoj hauj lwm thiab lub neej niaj hnub. Lub khoos phis tawj kiag li tau txais kev hloov pauv hluav taws xob thaum peb nkag mus rau xyoo 1980s. Cov khoom siv hluav taws xob hloov pauv tau ua nws txoj hauv kev mus rau hauv lub ntiaj teb ntawm cov khoom siv hluav taws xob thiab hluav taws xob hauv xyoo 1990.
Kev hloov hluav taws xob thev naus laus zis tau sai sai ua lub luag haujlwm tseem ceeb hauv cov khoom siv hluav taws xob hluav taws xob hauv qis dua kaum xyoo. Puas yog qhov no tsuas yog los ntawm kev hloov cov khoom siv hluav taws xob 'diminutive loj?
3. Nyob rau hauv qhov tseeb, nws yog tseeb los ntawm lub switching fais fab mov lub schematic daim duab uas nws tsis siv ib tug loj zog zaus transformer, thiab nws kuj ua tsis muaj ib tug loj lub dab dej kub vim hais tias tus nqi ntawm lub hwj chim uas yog dissipated nyob rau hauv lub adjustable raj yog ho txo. . Lub zog hloov hluav taws xob yog txo qhov loj thiab qhov hnyav raws li qhov tshwm sim. Cov txiaj ntsig tseem ceeb ntawm kev hloov cov khoom siv hluav taws xob yog lawv cov kev ua haujlwm siab thiab kev siv hluav taws xob tsawg. Lub transistor nyob rau hauv lub switching fais fab mov Circuit Court dua switches ntawm lub "on" thiab "tawm" lub xeev thaum muaj kev zoo siab los ntawm lub excitation teeb liab. Vim hais tias ntawm lub transistor lub incredibly ceev conversion ceev thiab tsawg zaus ntawm 50 Hz, lub zog efficiency yog ho nce.
4. Muaj ntau qhov kev tswj hwm qhov hluav taws xob muaj nyob rau hauv kev hloov hluav taws xob hloov. Lub voj voog lub luag haujlwm ntawm lub teeb liab excitation tswj qhov hloov hluav taws xob qhov hluav taws xob tso zis hluav taws xob, thiab qhov zaus lossis qhov dav hloov pauv tuaj yeem siv los ua kom muaj kev hloov pauv hauv cov teeb liab input voltage. Hauv qhov no, nws tseem muaj peev xwm muab qhov sib piv cov zis hluav taws xob zoo ib yam txawm tias thaum lub zog hluav taws xob sib txuas hluav taws xob sib txawv heev.
5. Kev khiav hauj lwm zaus ntawm kev hloov hluav taws xob tam sim no yog 50 kHz, uas yog 1000 npaug ntau dua li cov kab hluav taws xob tswj hluav taws xob. Raws li qhov tshwm sim, qhov kev ua haujlwm lim dej tom qab kev kho yog 500 lub sij hawm zoo dua li ntawm cov kab hluav taws xob tswj hluav taws xob. Thaum siv cov khoom siv hluav taws xob hloov pauv, lub lim capacitor lub peev xwm tsuas yog 1/500 txog 1/1000 ntawm qhov nws yuav yog nyob rau hauv ib txoj kab tswj fais fab nrog tib lub zog tso zis hluav taws xob.
