DIY Microphone Amplifier: 11 Kauj Ruam

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

Nyob zoo txhua tus:) Kuv vam tias txhua tus muaj kev nyab xeeb thiab suab zoo. Hauv cov lus qhia no kuv yuav qhia koj yuav ua li cas kuv ua qhov kev lom zem tab sis muaj txiaj ntsig zoo rau qhov tsawg kawg ntawm lub tshuab hluav taws xob microphone uas tseem tuaj yeem siv los ua lub pob ntseg mloog vim nws muaj peev xwm tsav ob lub pob ntseg tau yooj yim thiab ua haujlwm hauv qhov hluav taws xob ntau ntawm 3 txog 6 dc zog. Nws siv yooj yim heev thiab yooj yim kom tau txais cov khoom.

Cia peb tsim lub tsev!

Khoom siv

1. Electret microphone
2. 3.5mm poj niam lub qhov (socket)
3. BC547 / 2N@2222 lossis sib npaug NPN transistors - 3
4. BC557 / 2N2907 lossis sib npaug PNP transistor - 1
5. 0.1uF ceramic capacitor - 1
6. 2.2uF ncov qaumteb qabteb capacitor - 2
7. 1K. 25 W resistors - 2
8. 100K.25 W resistors - 2
9. 4.7K.25 W resistor - 1
10. 100 Ohm resistor - 1
11. 1K kuj sib txawv resistor (preset) - 1
12. Lub hwj chim (3-6V), koj tseem tuaj yeem siv CR2302 khawm xov tooj lossis 3.7V lithium-ion cell
13. Cov khoom siv Soldering
14. Ib qho me me ntawm veroboard lossis perfboard

Kauj Ruam 1: Sau tag nrho cov Cheebtsam

Txhua qhov khoom siv hauv txoj haujlwm no yooj yim heev kom tau txais thiab tus nqi ntawm lawv kuj yog qhov tsawg heev. Koj tuaj yeem tau txais feem ntau ntawm cov khoom siv no los ntawm cov khoom siv hluav taws xob qub. Tsuas yog xyuas kom koj tau sim cov transistors yog tias koj tau khaws nws los ntawm cov khoom siv hluav taws xob qub.

Kuv kuj tau txiav ib daim ntawm perfboard kom me me los txhuam cov khoom sib xyaw hauv qhov chaw.

Kauj Ruam 2: Tshooj Lus Microphone

Txij li thaum peb tab tom siv lub tshuab electret microphone, cov khoom ntxiv uas peb xav tau txhawm rau txhawm rau txhawm rau txheeb xyuas lub suab cim yog rub tawm tus neeg tawm tsam (rau sab hauv MOSFET ntawm lub microphone) thiab txiav lub tshuab txiav kom tshem tawm txhua yam DC ntawm lub teeb liab.

Rau kuv daim ntawv thov, Kuv tau siv 4.7K rub tawm tus tiv thaiv thiab 0.1uF cov khoom siv hluav taws xob ua hluav taws xob raws li kev txiav tawm lub zog.

Kauj Ruam 3: The Amplification Stage

Lub teeb liab me me uas tsim los ntawm lub microphone yuav tsum tau ua kom nrov nrov kom cov teeb liab tso tawm muaj qhov txaus txaus los siv tau. Txog qhov no kuv tau siv 2 theem transistor kev nthuav dav hom uas thawj theem ncaj qha tau txais cov paib los ntawm lub mic thiab ua kom nrov nrov rau qib tom ntej uas tau txiav txim siab dua siv 2.2uF capacitor. Lub teeb liab mus rau theem theem thib ob yog tswj los ntawm lub hwj chim ntsuas nws ib qho tuaj yeem hloov pauv (lossis ntim ntim).

Kauj Ruam 4: The Driver Stage

Tom qab tsim nyog nthuav dav, peb ntxiv cov neeg tsav tsheb uas muaj peev xwm tsav ob lub pob ntseg thiab yog li muab lub suab zoo rau tus neeg siv. Tus neeg tsav tsheb theem suav nrog tus ncej totem ua los ntawm NPN thiab PNP transistor khub.

Kauj Ruam 5: Schematic ntawm Txoj Haujlwm

Nov yog daim duab qhia tag nrho ntawm txoj haujlwm. Txoj haujlwm ua haujlwm ntawm qhov ntsuas hluav taws xob tsis tshaj 6 volts. Koj tuaj yeem hloov lossis hloov kho qee yam khoom raws li qhov koj xav tau.

Kauj Ruam 6: Kuaj ntawm Breadboard

Xyuas kom tseeb tias koj sim koj lub Circuit Court ntawm breadboard ua ntej koj pib txheej txheem txheej txheem. Nws yog qhov tseem ceeb kom ntseeg tau tias peb lub Circuit ua haujlwm tau raws li qhov xav tau thiab ua qhov hloov kho tsim nyog yog xav tau.

Kauj Ruam 7: Npaj cov Cheebtsam hauv Qhov Chaw

Ua ntej pib txheej txheem txheej txheem, kuv tau npaj cov khoom sib xws hauv txoj hauv kev uas kev sib txuas tuaj yeem ua tau siv cov khoom siv sib txuas nkaus xwb thiab siv cov jumper lossis cov xov hlau raug zam, nws ua rau muaj kev sib txuas zoo thiab cog lus thiab tseem ua kom muaj kev sib txuas zoo. Koj tuaj yeem sim nrog cov qauv txheej txheem.

Kauj Ruam 8: Cov Txheej Txheem Ua Kom Tiav tiav

Nov yog qhov qauv zoo li cas tom qab tag nrho cov khoom sib cais tau muab muag. Tsuas yog cov kab laug sab laug tau siv los ua qhov Circuit no. Tsuas yog cov khoom siv ntxiv uas yuav tsum tau muag yog lub microphone, lub qhov (socket) thiab cov xov hlau rau lub hwj chim.

Kauj Ruam 9: Ua tiav

Qhov no yog qhov ua tiav module tom qab soldering. Kuv tau txuas qhov tso tawm rau lub oscilloscope no los tshuaj xyuas qhov ua haujlwm tawm suab thiab qhov loj.

Kuv vam tias qhov haujlwm no muaj txiaj ntsig. xav tias dawb los tso tawm cov lus qhia lossis tswv yim hauv cov lus hauv qab no. Txheeb tawm cov vis dis aus hauv cov kauj ruam tom ntej kom saib seb cov qauv no ua tau zoo li cas thiab thaum koj nyob ntawd xav txog kev sau npe yog tias koj nyiam kuv cov ntsiab lus.

Txog rau lwm lub sijhawm:)