Stereo Audio Amplifier With IC TEA2025: 4 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27

Koj puas xav txog kev ua lub tso suab tso suab? Yog tias koj yog, ces nws yog qhov chaw raug! Txoj haujlwm no yog hais txog kev ua 5 Watt lub tso suab tso suab siv TEA2025 IC.

Ua tsaug tshwj xeeb rau lub xaib no.

Nco tseg: Mane ntawm cov duab tsis yog kuv li.

Thov ua tib zoo saib xyuas thaum ua haujlwm nrog hluav taws xob thiab cov raj kub kub.

Kauj Ruam 1: Yam Koj Yuav Tsum Tau

Yam uas koj xav tau yog: 1) TEA2025 IC.

2) 10k-20k Potentiometer (2x)

3) 0.22uf capacitors (2x)

4) 100uf capacitors (6x)

5) 0.15uf capacitors (2x)

6) 470uf capacitors (2x)

7) 3 - 4 Watt Hais Lus (2x)

Kauj ruam 2: Txoj kev xav

TheoryThe UTC TEA2025 yog monolithic integrated audio amplifier IC hauv 16-pin yas dual hauv kab kab. Nws yog tsim los thawj rau cov tshuab ua suab paj nruag thiab cov xov tooj cua, tab sis nws tuaj yeem siv los ua lub suab tso suab zoo nkauj rau lub iPod lossis mp3 player. Nws xav tau ob peb yam sab nraud thiab tuaj yeem ua haujlwm qis li 3 V fais fab mov. Tus pin daim duab ntawm TEA2025 thiab daim ntawv thov Circuit Circuit rau daim ntawv thov tso suab tau tshwm sim. Qhov cuab yeej muab qhov siab tshaj plaws ntawm 45 dB. Txawm li cas los xij, nws tuaj yeem txo qis los ntawm kev tso ib qho RC sab nraud Circuit Court nruab nrab ntawm cov lus taw qhia tus pin (6 thiab 11, saib tus lej duab) thiab hauv av. Cov ntawv qhia tawm tsis txhob txo qis qhov nce hauv 36 dB. Txhawm rau kom tau txais qhov siab tshaj plaws, siv R = 0 thiab C = 100 µF (raws li tau hais hauv daim ntawv thov kev sib tham saum toj no) nruab nrab ntawm cov lus tawm tswv yim thiab hauv av. Qhov txiav qis qis zaus (fL) ntawm cov teeb liab tso tawm yog nyob ntawm qhov load tsis kam (hais lus, RL) thiab cov zis capacitor 470 µF. Yog tias tus neeg hais lus tsis kam yog 4?, Qhov txiav tawm tsawg zaus yuav yog, fL = 1/(2? CRL) = 80 Hz Cov yam ntxwv ntxim nyiam ntawm TEA2025 yog nws tau tsim hluav taws xob tiv thaiv hluav taws xob. Yog tias koj xav khiav nws ntawm nws lub peev xwm tag nrho (5 W), koj yuav tsum muab cov cua sov tso rau hauv Circuit Court. Yog tias koj tsis ua, kev tiv thaiv sab hauv cua sov yuav tsis cia lub cuab yeej puas; txhua yam uas tshwm sim yog tias lub zog tso tawm raug txo qis thaum qhov ntsuas kub ntau dhau dhau los. Thaum nkag mus rau theem, logarithmic dual taper potentiometer (10 lossis 20 K) tuaj yeem siv los muab lub ntim ntim tshwj xeeb. 0.22 µF capacitors ntawm sab nkag pab txo qis suab nrov vim qhov sib txawv resistor tiv tauj. 0.15 µF capacitors ntawm qhov kawg tso tawm yog rau kev ruaj ntseg zaus. Kev siv lwm tus nqi hluav taws xob tuaj yeem ua rau tsis xav tau ntawm qhov tso tawm. Kev sib txuas xov hlau ntev thiab cov kab hauv av hauv lub voj voog tseem tuaj yeem ua rau muaj kev sib kis, yog li kev teeb tsa zoo ntawm Circuit Court PCB yog qhov tseem ceeb heev. Koj tuaj yeem siv perfboard lossis stripboards ib yam nkaus! Tab sis koj xav tau kev paub zoo ntawm kev siv lub tshuab ua kom zoo dua.

Kauj Ruam 3: Ua Amplifier

Kuv tau tsim lub voj voog no ntawm lub prefboard raws li qhia hauv duab. Lub voj voos tau muab tso rau hauv 6 cm x 11 cm qhov loj me ntawm cov yas thiab cov kev sib txuas tsim nyog (lub hwj chim, tus hais lus, thiab lub tso suab tso suab tso tawm) tau rub tawm ntawm lub thawv. Lub tshuab hluav taws xob tuaj yeem siv hluav taws xob los ntawm 3-12 V.

Kauj ruam 4: Ta Da

Kuv tab tom ua qhov no nrog kuv lub roj teeb rov qab 9.6 V los ntawm kuv cov khoom ua si RC tawg. Kuv zoo siab nrog kev ua tau zoo ntawm TEA2025 ua lub tso suab tso suab tso suab.