Lub full-yoj rectifier, thiab yuav ua li cas nws ua hauj lwm

Rectifier hu ua hluav taws xob hwj chim converters, uas yog semiconductor los yog lwm yam electronic device rau converting AC tswv yim hwj chim rau DC tso zis. Wave rectifier ua rau ib tug ib nrab-choj los yog tus choj Circuit Court, lub ncauj lus kom ntxaws tsim ntawm uas peb yuav xav txog.

Lub essence ntawm cov ntaus ntawv thiab tag nrho cov-yoj rectifier

Feem ntau ntawm cov pab kiag li lawm tsim ib tug unidirectional ripple voltage. Yuav kom smooth lub mem, siv tshwj xeeb cov ntxaij lim dej.
Yuav kom txhim kho rectifier tsis tsim nyog los muab tam sim no txaus rau ob leeg ib nrab-lub sij hawm ntawm lub tswv yim voltage. Rau lub hom phiaj no, ob hom circuits siv ib tug ib nrab-yoj rectification, uas ua hauj lwm raws li antiphase thiab nyob rau hauv synchronism nrog ib tug ntau load.

Nrog rau qhov no xam nrog yuav tsum tau ob tug thawj voltage qhov twg los, uas yuav muaj ib qho chaw. Qhov no tswvyim no yog hu ua "full-yoj rectifier nrog nruab nrab point." Qhov nruab nrab nqi ntawm voltage nyob rau hauv lub load resistors nyob rau full-yoj rectification ntawm xws ntsuas yuav tshaj ob npaug ntawm ib nrab-yoj Circuit Court.

Nws yuav tsum tau muab sau tseg hais tias dvuhpolupeiodnoy schemes muaj qhov nruab nrab, nws muaj nws kev tsis zoo. Thaum tam sim no kis rau ib tug diode nyob rau opposite rov qab voltage ncov nyob rau hauv theem nce mus txog ib tug tshaj plaws ntawm ob zaug lub tswv yim voltage, dab tsi yuav tsum tau nco ntsoov hais tias xaiv diodes rau lub rectifier.

Nyob rau hauv no hais txog, xav txog ib tug ntau ncauj lus kom ntxaws tag nrho cov-yoj rectifier Circuit Court muaj ib tug hlau cov ntsiab lus muaj ib tug loj active sib npaug nrog kuj. Qhov no ua rau muaj cov loj loj losses txuam nrog ib tug tseem ceeb cua sov ntawm lub transformer.

Nyob rau hauv tsim xws li ib tug Circuit Court muaj ib tug smoothing capacitor, nws yog tsim nyog los xav txog tias qhov ntsuas alternating voltage yog ib txwm nyob rau hauv lub khiav hauj lwm tseem ceeb, uas yog ho me dua cov nyiaj pab ntau tshaj amplitude. Nyob rau hauv lub qhaj ntawv ntawm load rau hauv lub capacitor lub rectified voltage yog yeej ib txwm sib npaug zos amplitude. Qhov no txhais tau hais tias tag nrho cov-yoj rectifier muaj ib zaug xwb-theem alternating tam sim no ntawm lub capacitor 12, thaum tsis muaj load tau txais ib tug voltage ntawm 17 V. Los ntawm no, peb yuav xaus uas nyob rau hauv load cov rectified voltage txo, tab sis tsis ua tsawg tshaj li tus voltage uas twb muaj lawm ntau yam tam sim no thiab yuav tsum tau txiav txim los ntawm lub peev xwm ntawm ib tug smoothing capacitor.

Tej rectifier Circuit Court yog piav raws li nram no. Nyob rau hauv thiaj li yuav suppress lub cuam ntawm lub transformer thawj winding yog kev cob cog rua rau ib lim, uas yog li ntawm ob capacitors nrog daim ntawv nruab nrab point ntawm hauv av. Lawv yuav tsum tau unipolar, thiab txo lub neej puas yuav cov nyob voltage nyob rau ntawm lawv yog 200 V.

Feem ntau, tus tes hloov qhov yog teem rau lub condenser, nws yog tsim nyog los khaum cov mains voltage thaum lub sij hawm kev lag luam nyob rau hauv lub rectifier capacitors. Fullwave rectifier transformer muaj ib theem winding nrog ib tug center kais, tab sis nyob rau hauv no choj Circuit Court tso zis yog tsis tsim nyog. Lim rau lub rectifier thiab cov capacitor yog ob series resistor. Txawm li cas los, ib tug tsis tshua muaj qib ntawm ripple yog siv tau rau ntxiv lwm zis capacitor thiab resistor.

Txij li thaum hluav taws xob cav khiav lag luam raws li lub hauv paus ntsiab lus ntawm reversibility, voltage rectifiers ua ke nrog lub inverter yog ob hom hluav taws xob cav tov. Hu inverter ntaus converts DC voltage AC.