Siv LM386 Ua Tus Oscillator: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31

Cov neeg feem coob paub LM386 ua lub tshuab tso suab mono. Dab tsi yuav ua rau qee tus neeg xav tsis thoob yog tias LM386 tuaj yeem hloov pauv tau yooj yim mus rau hauv oscillator yam tsis muaj lwm yam tshwj xeeb IC's zoo li ib txwm 555 timer nti.

Hauv Cov Lus Qhia no, Kuv yuav muab cov phiaj xwm ncaj qha mus rau tom ntej thiab qee qhov kev piav qhia luv luv tias qhov no yuav ua haujlwm li cas thiab tseem muaj qee lub tswv yim hais txog yam zoo li cas uas koj tuaj yeem ua nrog cov cuab yeej no.

Kauj Ruam 1: Daim Ntawv Teev Npe

LM386 Amplifying ICResistors 1k Ohm 10k Ohm 100 Ohm 100k Ohm * * Cov resistor no tuaj yeem sib txawv ntawm 10k Ohm thiab 100 k Ohm tab sis lwm lub lauj kaub (200k lossis 1M) suab zoo heev. Capacitors 470 microFarad Polarized (Kuv nyiam qee yam qis dua 100 microFarads thiab kuv xav kom qhia siv 50 microFarad capacitor). 0.01 microFarad tsis-Polarized) * * Cov peev txheej no tuaj yeem sib txawv ntawm 0.01 microFarads thiab 0.27 microFarads. Kuv pom tias siv 0.1 microFarad capacitor tau txais ze ze rau ntawm lub xwmfab plaub fab. 8 Ohm Hais Lus 9 volt Roj teeb 9 volt Connector Potentiometer (rau kev hloov ntim)

Kauj ruam 2: Schematic

Qhov no xav tau tsuas yog qee yam khoom siv. LM386 muaj cov lus tawm tswv yim tiv thaiv (1350 K Ohms) los suav nrog qhov ua rau koj yuav siv roj teeb rau koj li haujlwm. Los ntawm kev txuas tus Pin 1 thiab 8 ua ke, koj tab tom hla tus tiv thaiv no. Pin 7 tsis txuas rau txhua qhov. Pin 6 txuas rau lub roj teeb 9 volt. Pin 4 txuas rau hauv av Raws li pom hauv thawj daim duab, Red X's qhia tias muaj tsis muaj kev sib txuas. Yog li Pin 2 thiab 3 tsis txuas, thiab Pin 2 thiab 4 tsis txuas. Tus so yuav tsum ncaj ncaj rau tom ntej. Qhov duab thib ob yog qhov ua piv txwv yav dhau los. Nws zoo ib yam tab sis muaj ob peb qho ntxiv. R t thiab C t qhia tias cov khoom no tuaj yeem sib txawv. Los ntawm kev hloov cov khoom no koj tuaj yeem ua rau Zaus raug tsim tawm. Qhov sib npaug yooj yim (lossis yog li kuv tau hnov) los txiav txim siab Zaus hauv Hertz yog (2.5)/(R t * C t). Rt yuav nyob nruab nrab ntawm 10, 000 thiab 100, 000 Ohms. Yog R3 (100 Ohm) sab laug lossis tshem tawm, koj yuav tau txais lub suab nrov nrov yog li sim zam qhov ntawd.

Kauj Ruam 3: Yam Yuav Sim

Koj tuaj yeem ntxig lub pob qhov ntim los ntawm kev tso qhov hloov pauv tsis sib xws hauv koob nrog 8 Ohm Hais Lus. Khaws nws tsawg dua 500 Ohms. Kuv sim qhov no nrog 1k Ohm kuj tsis paub meej resistor thiab nws tsis ua haujlwm zoo tiag tiag. Hloov R nrog PhotoCell los tsim Hnub Ci theramin yam ntaus ntawv. Hloov 0.01 microFarad capacitor nrog txhua yam ntawm 0.27 microFarads. Kuv tsis paub meej txog qhov no tab sis nrog 470 microFarad capacitor, Kuv tau txais suab nrov nyem/tapping suab ntau dua li lub suab (tej zaum kuv tsuas yog ua yuam kev). Kuv kho qhov no los ntawm kev siv ntau lub zog me me. Kuv pom tias txhua yam loj dua 100 microFarads suab zoo li miv miv tab sis txhua yam me me zoo li lub suab tiag.

Kauj ruam 4: Xaus

Nrog LM386, Kuv muaj peev xwm ua lub hnub ci me me theramin uas kuv tau teeb tsa ntawm 1 nti los ntawm 1.5 nti PCB pawg thawj coj. Kuv hloov lub 8 Ohm hais lus nrog 1/8 nti lub mloog pob ntseg nkaus. Kuv hloov R t nrog Photocell. Qhov zoo tshaj plaws txog qhov no yog nws tsis ntws lub zog ntawm 9 volt roj teeb. Nrog rau lwm cov phiaj xwm, 9 volt ntws tawm hauv ib hnub.

Kauj Ruam 5: Square Wave

Cov txheej txheem yav dhau los kuv tshaj tawm tsis yog ib puag ncig ib puag ncig yoj, yog li kuv tau hloov qee qhov thiab sim nrog lub suab.

Schematic tshaj tawm hauv cov duab yuav tsum muab rau koj ib puag ncig yoj oscillation.