Lub tso suab tso suab (6W+6W) Siv LA4440 IC: 4 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:29

Amplifiers xav tau ntau rau kev ua suab nrov. Muaj ntau ntau lub suab ICs muaj nyob hauv khw. Lawv muaj qhov sib txawv ntawm kev ntsuas lub zog, kev siv lub zog, mono lossis lub tso suab, thiab lwm yam Lawv muaj nyob hauv ntau pob xws li DIP, Pentawatt pob (Ntau TDA series IC muaj pob no), SIP14H pob, thiab lwm yam Hnub no kuv yuav tham txog LA4440 IC, uas muaj SIP14H pob. Qhov no yog lub suab tso suab zoo thiab zoo heev. Nws tuaj yeem xa 6W+6W tso zis zog, uas txaus rau koj lub tsev ua yeeb yam. Thaum siv hauv kev teeb tsa choj nws tuaj yeem xa mus txog 19W ntawm lub zog. Sib tham txog cov khoom sab nraud, koj yuav xav tau cov pawg ntawm cov capacitors, ob peb resistors. Kuv tus kheej nyiam nws heev thiab kuv yuav qhia txhua tus kom sim lub suab IC no. Nws zoo nkaus li zoo nkauj thaum koj ua koj tus kheej lub suab nrov yam tsis muaj teeb meem ntau dhau. Yog li cia peb pib.

Kauj Ruam 1: Qhov Yuav Tsum Tau

1. LA4440 IC nrog lub rhaub dej kub

2. 47uF cap ncov qaumteb qabteb

3. 100uF cap ncov qaumteb qabteb

4. 220uF cap ncov qaumteb qabteb

5. 1000uF cap ncov qaumteb qabteb

6. 4.7uF cap ncov qaumteb qabteb

7.10k qab

8. 2.2K resistor

9. 1K resistor

10. qhov hloov me me (tsuas yog koj xav tau kev hloov pauv lossis lub zog tshwj xeeb ntawm kev hloov pauv)

11. 3.5mm qhov (socket) poj niam thiab txiv neej

12. Ntsia qhov kawg

13. Breadboard (rau kev ntsuas lub hom phiaj)

14. Cov laug cam thiab cov khoom siv laug

15. 0.1uF (104) cap tsis ncov qaumteb qabteb (cov no yog nyob ntawm yeem)

16. 4.7ohm resistor (cov no yog nyob ntawm yeem)

17. poj niam chim chim rau fais fab mov

18. qee cov xov hlau txuas

19. Breadboard rau kev sim

20. 2 10W tus hais lus

Kauj Ruam 2: Txoj Kev Xav thiab Txoj Cai Ua Haujlwm

Kuv tau nyeem cov ntaub ntawv tiav thiab kuv tus kheej tau ua qee qhov kev hloov kho los ua kuv li 6W + 6W lub tso suab tso suab tso tawm Circuit. Rub tawm thiab luam tawm cov ntaub ntawv ntawm no

Daim duab kab hluav taws xob txuas nrog ntawm no.

Lub suab nrov yog lub tso suab tso suab. Yog li nws muaj 2 txoj hauv kev rau kev tawm suab. Yog li ib IC txaus rau 6W+6W lub tso suab tso suab. Tab sis rau kev txuas tus choj koj xav tau ob qho ntawm ICs. Txij li ob amps xav tau rau kev teeb tsa tus choj. Kev teeb tsa tus choj tuaj yeem muab txog 19W ntawm lub zog tso tawm. Tab sis kuv yuav siv hauv hom tso suab ntawm no. Koj tuaj yeem hla cov ntaub ntawv rau kev teeb tsa choj.

Qhov nce qhov hluav taws xob tau tsau ntawm no ntawm 52dB. Qhov ntawd tau nce yog kwv yees li 400. Tam sim no peb xav tau kev tswj hwm kom tau txais txiaj ntsig. Yog li peb ntxiv 22k lauj kaub ntawm sab nkag los sib txawv qhov nce. yog li 2 lub lauj kaub rau 2 raws (L thiab R). Yog li tom qab tso lub lauj kaub peb tuaj yeem sib txawv qhov nce los ntawm 52dB txog -0.847dB (uas yog 0). Thov cov mis: nce = 20*cav (Rf/(Rnf+Rnf ')) thiab koj yuav tau txais nws. Saib cov duab txuas ntawm no coj los ntawm cov ntawv teev npe.

Tam sim no 4, 7u thiab 2.2k tsim lub siab lim lim nrog txiav tawm ntawm kwv yees li 15hz. Thov cov mis fc = 1/(2*pi*C*R) thiab koj yuav tau txais nws.

Amp nti muaj qhov ua haujlwm hloov pauv. 4 thiab 5 tus pin tuaj yeem siv rau qhov no, raws li cov ntawv teev tseg. Kuv tsuas siv tus lej 4 xwb. Raws li cov ntaub ntawv nws tau muab tias qhov hluav taws xob los ntawm 6V-9V yuav tsum tau muab rau tus lej thib 4, thiab tias 9V Kuv tau muab los ntawm lub zog hluav taws xob 12V nws tus kheej, los ntawm kev siv lub peev xwm faib tawm. Rau qhov txo qis dua siv tus lej 5, saib daim duab hauv daim ntawv qhia.

Lub rhaub dej kub yuav tsum tau muab txij li qhov no tso tawm ntau lub zog. heatsink tuaj yeem txuas nrog hauv av ntawm pcb. Qee cov lus qhia hais txog heatsink los ntawm cov ntawv teev npe kuj tau txuas ntawm no. Pom lawv.

Zobel network ntawm 0.1uf + 4.7ohm tuaj yeem siv raws li cov ntawv teev tseg. Kev siv lub hau uas tsis yog polar polyester yog qhov zoo vim tias nws muaj qhov kub thiab txias zoo.

Kev ua haujlwm ntawm tag nrho lwm cov khoom tau muab hauv cov ntawv teev tseg thiab kuv kuj tau txuas qhov tseem ceeb, yog tias koj tsis muaj sijhawm nyeem nws.

Kauj Ruam 3: Xeem ntawm Breadboard

Tam sim no rau kev sim breadboad yog qhov tsim nyog. Txuas lub Circuit Court raws li daim duab qhia chaw. Lub kaus mom siv qhov chaw ntau dhau. Sim muab lub kaus mom kom ze rau IC raws li ua tau kom txo qis RF cuam tshuam. Txuas 2-8ohms (hom tso suab) hais lus. Txiav ib lub hli 3 hli thiab ntxig tus txiv neej tus pin rau hauv koj lub xov tooj lossis lwm lub suab thiab txuas cov xov hlau mus rau cov tswv yim thiab suab gnd rau gnd. Muab yam tsawg kawg 12V (tsawg dua 18V) khoom thiab kuaj nws. Yog tias koj xav koom nrog kev ua haujlwm hloov pauv koj tuaj yeem ua qhov ntawd. Koj yuav hnov ntau qhov kev hloov pauv hauv daim ntawv tais tab sis tsis txhob txhawj. Yog tias lub suab tau ua tiav tiav, koj txhua tus npaj txhij mus rau PCB. Txhua lub suab nrov thiab cuam tshuam yuav raug tshem tawm tom qab koj pcb-fy nws. Tom qab ua tiav kev sim, sib sau txhua yam khoom siv rau pcb lossis zeroboard, txhua yam uas koj muaj.

Kauj Ruam 4: Ua PCB

Siv EasyEDA thiab tom qab ntawd xaj PCB los ntawm JLCPCB lossis PCBWay tuaj yeem yog qhov zoo tab sis ntawm no kuv siv cov txheej txheem zeroboard yooj yim soldering. Qhov chaw thiab muab tshuaj txhuam kom zoo zoo. Lub kaus mom yuav siv ntau qhov chaw tab sis koj yuav tsum khaws ob txhais ceg kom ze li sai tau rau Chip. Yog li tso lawv kom zoo thiab ceev faj txog qhov tsis sib xws thaum muaj cov kaus mom ncov qaumteb qabteb. Txuas cov kab sib txuas sib txawv rau kev tawm tswv yim thiab kev tso tawm thiab lub zog siv. Nws yuav siv sijhawm ntau tab sis ua siab ntev. Coj tus schematic ib sab koj thaum lub sijhawm ua haujlwm.

Tom qab ua tiav txoj haujlwm sim nws dua. Kuv paub tseeb tias tam sim no koj yuav tsis tau txais qhov cuam tshuam uas koj tau ua ntej. Kuv tus kheej nyiam lub rooj tsav xwm amp ntau heev thiab kuv nquag ua suab paj nruag hauv nws. Muab cov neeg hais lus tso rau hauv ib lub thawv ntoo uas kaw thiab hnov cov ntses bass thaj tsam. Koj tseem tuaj yeem ntxiv preamplifier qis dua theem rau ntau ntses bass thaj tsam.

Nrog koj zoo siab, koj tau ua tiav tsim koj tus kheej 6W+6W hais lus. Thov tawm tswv yim hauv qab no lossis xa ntawv tuaj rau kuv ntawm [email protected] rau qhov tsis meej pem.