Cov khoom ua haujlwm nquag, uas suav nrog diode, txawv ntawm qhov tsis muaj qhov txawv uas lawv xav tau kev sib txuas hauv ib qho polarity. Tsis tas li ntawd, thaum txuas cov diodes, nws yog ib qho tsim nyog yuav tsum coj mus rau hauv tus lej ntsuas xws li kev xa khoom tam sim no thiab rov qab qhov hluav taws xob.
Cov Lus Qhia
Kauj ruam 1
Lub cathode ntawm lub diode yog qhov tsis zoo electrode thiab qhov anode yog qhov zoo. Thaum qhov xaim hluav taws xob tau thov rau lub diode hauv qhov tshwj xeeb tshaj plaws polarity, nws qhov kev sib tw ua me me thiab qhov tseem ceeb tam sim no tuaj yeem ntws; thiab thaum nyob rau hauv rov qab polarity, qhov tsis kam ua loj heev thiab qhov tam sim no me me li uas nws tuaj yeem tsis raug. Tab sis nco ntsoov tias qhov polarity ntawm qhov hluav taws xob ntawm qhov tso tawm ntawm qhov rectifier tau txiav txim los ntawm qhov hluav taws xob twg txuas nrog rau qhov hluav taws xob. Lub davhlau ya nyob twg txuas nrog lub nra.
Kauj ruam 2
Piv txwv li, yog tias koj xav tau txais qhov hluav taws xob ntawm qhov tso tawm ntawm ib nrab-nthwv rectifier uas yog qhov zoo nrog rau kev sib hwm ntawm cov hlau, txuas lub diode anode mus rau theem nrab winding ntawm lub hloov pauv, thiab cathode rau lub nra. Cov seem uas tsis siv neeg txuas, ob qho tib si windings thiab thauj khoom, yuav tsum txuas nrog cov hlau tsis sib xws.
Kauj ruam 3
Lub tshuab hluav taws xob puv ntoob yuav xav tau ob lub diodes thiab cov hloov pauv nrog cov kais dej los ntawm nruab nrab ntawm kev sib hloov ua tiav rau nws kev tsim khoom. Txuas cov kais txuas rau cov xov hlau uas nquag, thiab txuas rau cov diode anode rau txhua qhov ntawm cov huab kawg ntawm kev sib hloov ntawm qhov ntsuas. Txuas lub cathodes ua ke. Txuas qhov zoo hu rau ntawm lub ntsaws rau qhov sib txuas txuas ntawm lub cathodes ntawm diodes, thiab kev tiv tauj tsis zoo rau cov hlau txuas. Yog tias koj hloov qhov polarity ntawm tig ntawm ob diodes, tom qab ntawd koj yuav tsum hloov lub polarity ntawm tig rau ntawm lub nra.
Kauj ruam 4
Tus choj txuas lub pob taws muaj plaub diodes. Siv ob lub diodes thiab txuas cov anode ntawm ib qho ntawm cathode ntawm lwm tus, thiab tsis txhob txuas rau cov coj ua txhua qhov chaw tsis tau. Nov yuav yog thawj qhov khoom siv AC. Ua tib yam nrog rau cov seem ntawm cov txuas ntawm diodes, thiab koj yuav muaj qhov thib ob AC voltage txhaj tshuaj taw tes. Txuas cov seem ntawm cathodes ua ke, thiab koj tau txais qhov ntsuas kom zoo xaim hluav taws xob taw tes. Txuas cov anodes uas tseem nyob ua ke, thiab koj tau txais cov ntsiab lus ntawm kev tshem tawm ntawm qhov tsis zoo rectified voltage. Tus choj rectifier, muaj txhua qhov zoo ntawm cov pa hluav taws xob uas muaj qhov hloov txhij txhua, tsis tas yuav tsum muaj lub tsho thib ob yuav tsum cuam tshuam.
Kauj ruam 5
Yog hais tias tus load nkag tau rhiab rau cov ripple, txuas lub taub lim dej hauv lub zuj zus, soj ntsuam qhov polarity. Nco ntsoov tias qhov no yuav ua rau kom qhov hluav taws xob tsim tawm (nce txog 1.41 npaug). Tsis txhob siab tshaj li cov diode tsis dhau mus: qhov siab tshaj plaws mus rau tam sim no (i.e., qhov siab tshaj plaws tam sim no uas tuaj yeem ntws los ntawm diode thaum nws nyob) thiab qhov hluav taws xob thim rov qab tshaj plaws (i.e., qhov hluav taws xob tau thov rau lub diode thaum tua). Tsis txhob kov cov kev coj ua ntawm cov khoom uas muaj nyob hauv qhov hluav taws xob siab (cov no kuj tuaj yeem pom hauv cov hluav taws xob theem ob), thiab hauv cov hluav taws xob uas tsis sib cais los ntawm lub network - cov kev coj ua ntawm txhua qhov chaw txhua. Yog tias cov ntxaij lim dej tam sim no, cov tawm hluav taws xob (capacitors) ua ntej kov qhov chaw tom qab fais fab tuag.
