Cov txheej txheem:
- Kauj ruam 1: Yav dhau los Amplifier Version
- Kauj Ruam 2: Circuit Schematics
- Kauj Ruam 3: Teeb Teeb
- Kauj Ruam 4: Tshooj
- Kauj Ruam 5: Kev Txuas Hluav Taws Xob thiab Kev Siv Hluav Taws Xob
- Kauj Ruam 6: Kev Ua Si thiab Kev Txhim Kho Ntxiv
Video: PC Speaker Amplifier: 6 Kauj Ruam (nrog Duab)
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24
Nov yog lub zog me me (Tsawg dua 10Watt) transistor amplifier siv LM386 thiab TIP41/42.
Txawm hais tias lub zog tso tawm tsis zoo heev, nws tseem tuaj yeem ua haujlwm zoo li lub tshuab hluav taws xob rau PC hais lus thiab MP3 player.
Thaum nyob hauv chav tsev ntim khoom ua ke, ib nrab ntawm lub zog tso tawm los ntawm lub tshuab hluav taws xob no tsim tau yooj yim los ntawm kuv tsev neeg.
Xijpeem, nws tuaj yeem tsav 8ohm thiab 4ohm hais lus nrog lub zog 12V siab tshaj plaws.
Kuv tau txais daim duab qub los ntawm lub vev xaib (https://www.bristolwatch.com/radio/lm386_power_amp.htm, Lm386 Audio Amplifier Ntxiv Push-Pull Output Stage).
Raws li lub Circuit Court tsis siv dual polarity (+/-) lub zog xa khoom, tag nrho cov teeb meem hauv Circuit tsis nyuaj ntau thiab qhov loj me (15cm (W) x 10cm (D) x 5cm (H)) ntawm lub chassis tuaj yeem siv raws li qhia hauv daim duab saum toj no.
Kuv tau ua ntau lub tshuab hluav taws xob nrog cov duab qub thiab ib qho ntawm lawv tau qhia hauv daim duab saum toj no yog qhov kawg uas tau thov hloov kho me ntsis los ntawm qhov qub.
Kauj ruam 1: Yav dhau los Amplifier Version
Qhov no yog qhov qub version ntawm lub tshuab ua suab nrov raws li qhov qub schematics.
Nws siv TIP31/32 transistors li thawb-rub tawm theem.
Kuv tab tom siv LM7812 qhov ntsuas hluav taws xob ib txwm muaj thiab 220V (hauv)/15V (tawm) phab ntsa hloov ua lub zog siv vim tias lub tshuab hluav taws xob txuas hluav taws xob xav tau tsawg dua 1A tam sim no thaum ua haujlwm ib txwm muaj.
Nws txaus siab heev vim tias qib tso tawm txaus txaus los tsav ib qho ntawm 8ohm lossis 4ohm hais lus kuv muaj.
Lub suab zoo kuj tsim nyog thaum muab piv nrog lub suab nrov ua lag luam uas kuv tau siv ua ntej.
Tab sis nws zoo li lub suab nrov nrov tau tawm thaum hnov ze rau tus hais lus.
Tej zaum LM386 amplifier IC zoo li ua rau muaj suab nrov nrov nrov ua ke nrog lub suab tso tawm ib txwm muaj.
Yog li ntawd, lub tshuab hluav taws xob no tsis nquag siv li hnov ob peb teev feem ntau ua rau kuv tsis xis nyob vim yog lub suab nrov tawm los ntawm tus hais lus.
Thiab qee zaum RF (xov tooj cua ntau zaus) tawg tuaj thaum lub maus taus hla los ze kuv chav tsev nrog suab nrov loj.
***
Kuv tau tshawb hauv internet txhawm rau txo qis suab nrov thiab qee zaus RF khaws tag nrho.
Cov txheej txheem hauv qab no yog qhov txiaj ntsig uas tau thov nrog qee qhov kev hloov kho pom zoo hauv ntau lub vev xaib.
Kauj Ruam 2: Circuit Schematics
Raws li kuv tsis zoo ntawm cov khoom siv hluav taws xob sib piv, kev piav qhia tshawb fawb tsis muaj peev xwm ua rau kev hloov kho uas kuv tau ua hauv kab lus saum toj no.
Tab sis qhov txiaj ntsig tau txaus siab heev thaum kuv mloog MP3 ua si thiab hnov lub suab tso tawm ntawm cov vis dis aus tau ob peb teev nrog hloov pauv ntawm Circuit amplifier.
Raws li lub suab zoo yog qhov teeb meem tus kheej raws li tus kheej qhov kev xav, qhov kev kho mob saum toj no yuav tsis haum rau qee leej.
Tab sis txawm li cas los xij tsis muaj kev khaws RF ntau ntxiv thiab cov suab nrov ntawm cov teeb meem suab nrov ploj mus thaum kawg.
Qhov laj thawj ntawm kev ntxiv thiab tshem tawm cov khoom siv hluav taws xob muaj raws li hauv qab no.
***
- Ua ntawv thov qis (100uF) thiab siab (0.1uf) zaus hla cov capacitors tau pom zoo rau cov kab hluav taws xob ntawm LM386 kom tshem tawm cov suab nrov nkag mus rau IC amplifier
- Txo qhov nce ntawm LM386 (ua kom qhib tus pin 1 thiab 8 txhawm rau txhim kho qhov nce ua ntej 20 (26dB)) pab tshem tawm cov suab nrov nrov kuj tau pom zoo hauv lwm lub vev xaib.
- Thiab thaum kawg ntxiv ib qho ntxiv cov khoom siv hluav taws xob (0.1uF capacitor uas tau suav ua 3 hauv cov txheej txheem saum toj no) rau LM386 cov zis tau thov kom tshem tawm cov suab nrov nrov zoo tag nrho raws li cov khoom siv hluav taws xob ua hluav taws xob tau ua qis qis lim
***
Txhua qhov lus pom zoo saum toj no kuv pom hauv web-nplooj ntawv tau thov thiab sim ib los ntawm ib qho los tsim cov txheej txheem zaum kawg uas pom hauv daim duab saum toj no.
Ua ntej tshaj plaws, Kuv tsis xav tias ib qho ntxiv ntawm cov khoom siv hluav taws xob ntau (tus lej 3 feem hauv cov lej) rau LM386 tso tawm raws li lub tswv yim zoo.
Vim tias qhov muaj peev xwm tuaj yeem tshem tawm qee qhov muaj txiaj ntsig zoo siv lub teeb liab los ntawm tus neeg hais lus tso tawm yog qhov tsim nyog tsis txaus ntseeg rau leej twg.
Tab sis lub peev xwm sib ntxiv ua qhov kev daws teeb meem zoo kom tshem tawm RF tuaj tos thiab suab nrov nrov los ntawm lub suab tso tawm thaum kawg.
Kauj Ruam 3: Teeb Teeb
Raws li lub tso suab tso tawm xav tau, ob lub tshuab hluav taws xob sib txuas tau teeb tsa thiab txuas rau ntawm PCB thoob ntiaj teb.
Thaum sib piv cov duab kos thiab cov kab hluav taws xob sib dhos ua ke, koj tuaj yeem pom txhua txoj kab hluav taws xob uas tau piav qhia hauv cov duab kab lus tau sib phim nrog cov qauv thaiv hauv daim duab saum toj no.
Qhov loj me me ntawm txhua qhov khoom siv hluav taws xob tau piav qhia, nyob thiab txuas ua ke nrog lwm cov khoom siv hauv daim duab thaiv.
Yuav kom txo cov kab hluav taws xob ntev tag nrho, tsis siv oblong thiab txoj kab thaiv txoj hlua siv.
Thiab cov kab kab xim kab txaij tau txuas thiab txuas rau sab saum toj ntawm PCB.
Lub caij no lwm cov kab xim liab/ntsuab tau xaim thiab txuas tom qab (sab laug) sab ntawm PCB.
Kauj Ruam 4: Tshooj
Kuv tsis tuaj yeem piav qhia thiab piav qhia txhua feem ntawm ib qho hauv daim duab saum toj no.
Tab sis feem ntau ntawm cov khoom tsim nyog tau piav qhia hauv daim duab.
Cov ncauj lus kom ntxaws BOM (Bill of Materials) tau piav qhia hauv cov npe hauv qab no. (Tus nqi ntawm cov khoom siv tseem ceeb tau sau. Tab sis cov ntaub ntawv tus nqi raug muab raws li qhov qhia)
***
- LM386 amplifier IC x 2 (Txog 1 $)
- TIP41 (NPN transistor) x 2, TIP42 (PNP transistor) x 2 (Txog 1.2 $ rau txhua tus)
- 1N4148 diode x 4 rau kev ncaj ncees transistors li Class AB
- LM7812 tus tswj hluav taws xob (Lub zog siv hluav taws xob)
- ALPS xiav velvet 20K potentiometer (Tswj ntim, dual 20K VR suav nrog, 10 $)
- 1000uF electrolytic capacitor x 2 rau lim DC los ntawm cov suab tso tawm
- 100uF electrolytic capacitor x 2 rau kev hla dhau lub suab qis qis los ntawm kab hluav taws xob
- 10uF electrolytic capacitor x 2 rau kev hla lub zog nrog LM386 IC
- 2.2uF electrolytic capacitor x 2 rau kev txuas lub suab nkag mus rau lub tshuab hluav taws xob
- 0.1uF ceramic capacitor x 6 rau lub zog lim thiab tshem tawm suab nrov ntau zaus
- 0.33uF zaj duab xis capacitor x 1 rau LM7812 tus tswj hwm lub suab nrov lim
- 0.047uF zaj duab xis capacitor x 2 rau cov zis ruaj khov (Zobel network)
2.2ohm 1/2W resistor x 4 rau transistor thauj khoom
- 1K 1/4W resistor x 2 rau transistor biasing
- 10ohm x 2 rau cov zis ruaj khov nrog Zobel network
- Hais lus cable thaiv thaiv dav hlau thaiv (4 Pins, 3 $)
- 3.5mm lub tso suab tso suab lub qhov (socket)
- Lub zog hluav taws xob nkag rau lub qhov (socket) rau 15V phab ntsa mount fais fab mov adapter
- Universal PCB board txog 15cm (W) x 10cm (D)
- Acrylic board x 4 (15cm (W) x 10cm (D) x 5mm/3mm (H))
- Tus neeg txhawb nqa hlau M3 loj (ntsia liaj qhov rooj/txiv ntoo) 3.5cm x 4
- 2 xaim hluav taws xob (ntsuas 5V thiab ntau dua 2A)
***
Kev sib txuas transistor tau pom zoo hauv lub vev xaib uas qhov txheej txheem qub tau tshaj tawm.
Txhawm rau ua kom lub suab zoo dua, feem ntau yuav tsum tau hloov pauv transistor rau kev txhawb nqa lub cev zoo ib yam ntawm NPN/PNP transistors.
Tab sis raws li cov txheej txheem sib dhos yog qhov ua rau me ntsis, kuv yuav tsis hais cov ntsiab lus hauv zaj dab neeg no.
Kauj Ruam 5: Kev Txuas Hluav Taws Xob thiab Kev Siv Hluav Taws Xob
Cov hlau xaim hlau (AWG 24 qhov loj me) tau siv los ua cov qauv thaiv raws li tau piav qhia hauv kab lus thiab kab duab kab.
Ob peb jumper cables tau siv vim qhov ua tsis raug thaum lub sijhawm siv tshuaj txhuam.
Raws li txoj hauv kev soldering tau piav qhia hauv lwm yam qhia (https://www.instructables.com/circuits/raspberry-pi/projects/recent/), Kuv yuav tsis piav qhia ntxaws hauv zaj dab neeg no.
Tab sis qhov tseem ceeb thaiv thiab ua haujlwm yog ua raws li cov ntsiab lus raws li qhia hauv daim duab thaiv.
Raws li pom hauv daim duab saum toj no, ntau cov kab txuas tau txuas nrog lub suab nrov suav nrog xws li lub tso suab tso suab, 2 lub xov tooj hais lus xov tooj cua thiab 15V lub hwj chim muab xov tooj.
Kauj Ruam 6: Kev Ua Si thiab Kev Txhim Kho Ntxiv
Raws li kev ua lub tshuab ua kom tiav, cia pib mloog qee cov nkauj nrog nws.
Tus hais lus pom hauv daim duab saum toj no yog Scandyna MicroPod SE uas tau yuav txog 10 xyoo dhau los.
Tam sim no lub suab txuas cov qauv txuas tau hloov pauv mus rau Bluetooth thiab tseem zoo ib yam ntawm cov qauv zoo li muaj rau kev yuav.
Tus kheej kuv xav tias tus hais lus cov lus qhia tshwj xeeb thiab kev ua tau zoo yog qhov tseem ceeb tshaj li lub tshuab raj rau lub suab zoo.
Tus neeg hais lus qhov kev qhia tshwj xeeb yog raws li hauv qab no.
***
-Cov ntawv thov Hi-Fi tso suab, AV-Tsev Theatre systems
- Amplifier xav tau 10 - 100 watt
Nominal impedance 4 Ω
Teb Zaus 65-20.000 Hz (± 3dB)
***
Kuv tau piav qhia txog kev siv lub suab nrov no rau PC hais lus.
Tab sis nws tuaj yeem cuam tshuam nrog cov suab sib txawv los ua suab paj nruag lossis yees duab.
Koj tuaj yeem saib cov vis dis aus ntawm lub tshuab ua haujlwm ua haujlwm txuas hauv qab no.
***
drive.google.com/file/d/131MuCqJzu-P7cf5pM…
***
Raws li kev kaw cia tau ua los ntawm lub xov tooj ntse, lub suab zoo tsis paub ntau.
Xijpeem kuv siv lub tshuab ua suab nrov no ua cov cuab yeej siv yooj yim rau rov ua dua txhua cov ntsiab lus tshaj tawm nrog PC, Raspberry Pi server, ntse-xov tooj thiab lwm yam.
Raws li kev txuas ntxiv ntawm txoj haujlwm no, qee qhov ntxiv rau kev ua haujlwm yuav suav nrog rau lub tshuab hluav taws xob no.
Ua tsaug rau kev nyeem ntawv.
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