Passive Low Pass Lim rau Lub Suab Hluav Taws Xob (Dawb-Form RC Lim): 6 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Ib yam uas ib txwm ua rau kuv muaj teeb meem thaum ua cov cuab yeej siv hluav taws xob yog lub suab nrov tsis tu ncua cuam tshuam rau kuv lub suab qhia. Kuv tau sim tiv thaiv thiab cov tswv yim sib txawv rau cov xov hluav taws xob tab sis qhov kev daws teeb meem yooj yim tshaj plaws tom qab tsim tau zoo li yog cov khoom siv tsis zoo rau lim tawm qhov tsis xav tau ntau zaus.

Cov lus qhia no yuav yog chav kawm sib tsoo sai sai rau kev tsim ib qho ntawm cov ntxaij lim dej no nrog ob peb yam thiab cov hlau txuas.

Khoom siv

-1 resistor (Kuv tab tom siv 1k tab sis koj tuaj yeem siv qhov twg ua haujlwm rau koj. Saib cov theem tom ntej kom paub ntau ntxiv)

-1 capacitor (Kuv tab tom siv 1uf tab sis dua qhov no tuaj yeem sib txawv nyob ntawm qhov ntau npaum li cas koj tab tom nrhiav)

-2 audio jacks (tuaj yeem yog yam zoo li koj muaj, Kuv siv 3.5mm jacks)

Kauj Ruam 1: Kev nkag siab txog Circuit thiab xam koj tus kheej

RC lim tsuas yog lub lim dej ua los ntawm tus tiv thaiv (R) thiab lub peev xwm (C). Nws tsis xav tau lub hwj chim ua rau nws tsis muaj kev tiv thaiv. Lub lim dej ua haujlwm los ntawm kev siv tus tiv thaiv kom qeeb them ntawm lub capacitor. Cov teeb liab tso tawm tsis tuaj yeem ceev nrog qhov hloov pauv sai sai los ntawm cov teeb liab nkag mus, ua rau ntau zaus ntau zaus tsis dhau.

Txhawm rau xam qhov zaus uas tau lim tawm, peb tuaj yeem siv cov kab zauv hauv qab no:

F = 1/2 π*R*C

qhov twg F yog qhov txiav tawm zaus, R yog qhov muaj peev xwm tiv taus hauv ohms thiab C yog qhov muaj peev xwm ntawm lub capacitor hauv farads.

Yog li thaum kuv siv 1uf capacitor thiab 1k resistor, kuv cov mis txuas rau:

1/ 2π * 1, 000 * 0.000001 = 1/ 0.00628 = 159.236 ~ 160Hz

Lub ntsiab lus kev sib xyaw ua ke lim tawm ntawm ib puag ncig 160Hz.

Txog rau qhov tob tob rau hauv RC lim, Kuv pom zoo qhov vis dis aus no los ntawm Afrotechmods

Kauj Ruam 2: Txuas Cov Hluav Taws Xob hla Cov Teeb Pins ntawm Jacks

Solder ob txhais ceg ntawm tus tiv thaiv hla lub teeb liab tus pin (lossis pins) ntawm 2 lub suab ntsaws. txiav tawm cov xov hlau ntau dhau.

Kauj Ruam 3: Txuas Tus Capacitor rau Ib qho ntawm Jack's Signal Pin

Txuas qhov zoo ntawm lub capacitor mus rau ib qho ntawm lub jacks teeb liab tus pin.

NCO TSEG: Lub jack koj txuas rau sab zoo ntawm lub capacitor yuav yog qhov tso tawm.

Kauj Ruam 4: Txuas Ib Sab Tsis Zoo ntawm Capacitor hla Cov Pins Hauv Paus ntawm Ob Lub Suab

Siv qhov tsis zoo ntawm koj lub peev xwm, txuas 2 reaming 2 ceg ntawm lub suab nkaus.

Txiav cov xov hlau tshaj.

Kauj Ruam 5: Ntxuav thiab Kos Npe thiab Tso Tawm

Ntxuav tawm ib qho xov hlau txuas ntxiv uas tawm thiab cim qhov twg yog qhov koj nkag thiab qhov twg yog qhov koj tso tawm.

NCO TSEG: yog tias koj tsis paub meej tias qhov twg yog cov tswv yim lossis tso tawm, nco ntsoov tias lub jack nrog qhov zoo ntawm lub capacitor txuas nrog nws cov cim teeb liab yog qhov tso tawm.

Kauj Ruam 6: Kuaj thiab Kho

Plug lub lim ua tiav hauv kab nrog koj lub cuab yeej suab.

suab ntaus suab cable RC Lim lub suab hais lus lossis ntaus ntawv kaw

Qhib koj tus neeg hais lus thiab pom tias lub lim dej ua haujlwm li cas! Yog tias koj tseem tau txais lub suab nrov, koj tuaj yeem ua si ib puag ncig nrog cov txiaj ntsig sib txawv ntawm koj cov khoom. Yog tias koj lub cuab yeej siv suab nrov nrov ua av nkos, sim tso qis qis rau koj cov khoom siv kom tau rov qab qee qhov ntau dua uas tau raug lim tawm.

Cov ntaub ntawv txuas ntawm no yog ib qho piv txwv ntawm kuv tus kheej lub suab nrov nrov lim. Cov ntaub ntawv "tsis muaj lim.wav" yog ua ntej kuv ntxiv RC lim. Pom qhov ua siab tshaj blips thiab squeaks. Cov ntaub ntawv "nrog lim.wav" yog kaw hauv ib puag ncig los ntawm tib lub cuab yeej tab sis nrog lub lim nyob hauv kab nrog lub teeb liab.