Cov txheej txheem:

DIY Roj Teeb Powered Overdrive Pedal rau Guitar Effects: 5 Cov Kauj Ruam
DIY Roj Teeb Powered Overdrive Pedal rau Guitar Effects: 5 Cov Kauj Ruam

Video: DIY Roj Teeb Powered Overdrive Pedal rau Guitar Effects: 5 Cov Kauj Ruam

Video: DIY Roj Teeb Powered Overdrive Pedal rau Guitar Effects: 5 Cov Kauj Ruam
Video: PRETENDING to play GUITAR for the FIRST TIME😂 2024, Kaum ib hlis
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DIY Roj Teeb Powered Overdrive Pedal rau Cov Teeb Meem Guitar
DIY Roj Teeb Powered Overdrive Pedal rau Cov Teeb Meem Guitar

Txog kev nyiam nkauj lossis nyiam kev siv hluav taws xob, lub hom phiaj ntawm Cov Lus Qhia no yog los qhia qhov tseem ceeb npaum li cas SLG88104V Rail rau Rail I/O 375nA Quad OpAmp nrog nws lub zog qis thiab kev nce qib qis tuaj yeem hloov pauv kev siv hluav taws xob ntau.

Cov qauv tsim ntau dhau ntawm kev ua lag luam niaj hnub no khiav ntawm 9V. Txawm li cas los xij, raws li tau piav qhia ntawm no peb tuaj yeem ua tiav qhov kev tsav tsheb dhau los uas tau txais txiaj ntsig zoo hauv nws lub zog siv thiab ua haujlwm ntawm VDD qis uas nws tuaj yeem ua haujlwm siv tsuas yog ob lub roj teeb AA ntawm peb lub volts rau lub sijhawm ntev thiab lub roj teeb ntev heev. Txhawm rau khaws cia cov roj teeb ntxiv hauv chav, hloov lub tshuab rau kev tsis koom nrog yog siv tus qauv. Ib qho ntxiv, raws li tus hneev taw ntawm SLG88104V me me nrog cov roj teeb tsawg heev uas siv, lub me me lub cev hnyav tuaj yeem ua tau yog xav tau. Tag nrho cov no ua ke nrog cov suab zoo nyiam ua rau nws ua tus qauv tsim dhau los.

Amitified guitars tau tshwm sim thaum xyoo 1930's. Txawm li cas los xij, lub sijhawm ntawd cov neeg ua yeeb yaj kiab sau cia ua suab nrov rau cov suab paj nruag huv. Los ntawm 40's DeArmond tsim lub ntiaj teb thawj qhov kev ua haujlwm ib leeg. Tab sis nyob rau lub sijhawm ntawd cov tshuab hluav taws xob tau kaw raws qhov loj thiab loj. Thaum lub sijhawm 40's thiab dhau mus rau 50's txawm hais tias lub suab nrov huv tau nthuav dav, cov neeg sib tw thiab cov pab pawg tau hloov pauv lawv cov amps ntim mus rau qhov xwm txheej dhau los thiab lub suab tsis sib xws tau nrov dua. Hauv 60's transistor amplifiers pib tsim nrog Vox T-60, xyoo 1964 thiab nyob ib puag ncig tib lub sijhawm ntxiv los khaws cia lub suab tsis zoo uas tau nrhiav tom qab lub sijhawm ntawd thawj qhov cuam tshuam cuam tshuam tau yug los.

Kauj ruam 1: Yam yuavtsum tau kawm uantej

Yam yuavtsum tau kawm uantej
Yam yuavtsum tau kawm uantej

Kev sib piv lossis digital ua cov cim suab paj nruag tuaj yeem muab cov txiaj ntsig tshiab, thiab ua kom muaj zog dhau los ua kom rov muaj zog los ntawm cov kev txiav tawm ntawm cov amps thaum ntxov.

Feem ntau tsis xav tau thiab txo qis raws li kev ua kom nrov dua qhov sib txawv yog qhov tseeb ntawm qhov txiaj ntsig no. Clipping tsim tawm ntau zaus uas tsis muaj nyob hauv lub suab qub thiab qhov ntawd tuaj yeem yog ib feem vim li cas rau nws rov hais dua thaum ntxov. Muaj zog thiab yuav luag ib puag ncig nthwv dej cuam tshuam nrog clipping ua rau muaj suab nrov heev uas tsis muaj suab nrov rau nws niam txiv lub suab, thaum lub suab mos muag ua rau muaj kev sib haum xeeb thiab yog li feem ntau lub suab tsim tawm yog nyob ntawm qhov txiav thiab ua kom ploj mus. Nws yog qhov kev ntseeg muaj zog ntawm tus sau phau ntawv no tias kev ua tau zoo ntawm lub pedal ntau dhau yog nyob ntawm nws qhov kev faib ua feem ntawm kev sib haum xeeb rau cov suab tsis sib xws thoob plaws hauv nws cov peev txheej thiab nws lub peev xwm los khaws cov suab sib haum ntawm ntau dua.

Kauj ruam 2: Txheej txheem cej luam

Txheej txheem cej luam
Txheej txheem cej luam

Saum toj no yog cov ntsiab lus ntawm cov phiaj xwm phiaj xwm, lub hom phiaj yog txhawm rau khaws cov cim uas twb muaj lawm thiab tsim cov suab nrov ntawd. Kev siv SLG88104V tso cai rau Overdrive pedal khiav ntawm 3 V siv ob lub roj teeb AA uas muaj dav dua thiab tsis kim los yuav ntau dua 9 V PP3 roj teeb. Yog xav tau, AAA roj teeb tuaj yeem siv tau dua, txawm hais tias lub peev xwm ntxiv ntawm AA ua rau nws ntau dua li qhov zoo. Ntxiv mus, Circuit yuav tuaj yeem ua haujlwm ntawm 4.5 V (1.5 V kab kab +3 V) lossis 6 V (3 V kab kab +3 V) yog xav tau, txawm hais tias tsis tsim nyog.

Xaiv qhov kev hloov pauv ntau zaus - kev hloov kho tseem ceeb kom ua tiav kev txhawb zog ntawm qhov qis dua.

Kauj Ruam 3: Piav Qhia thiab Txoj Kev Xav

Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav
Kev piav qhia thiab Kev Xav

Peb xaiv siv qhov tsis hloov pauv topology ntawm lub tshuab hluav taws xob ua lub hauv paus rau qib nce vim nws qhov kev nkag siab siab impedance thiab hloov pauv yooj yim rau xaiv zaus.

Saib Formula 1.

Raws li peb tau pom, qhov tau txais hauv qhov teeb tsa no tsuas yog muaj qhov xwm txheej ntawm kev tawm tswv yim. Yog tias peb hloov qhov no los ua qhov siab dhau topology, nce yuav yog nyob ntawm cov lus tawm tswv yim thiab cov lus tawm tswv yim raws li qee qhov kev npaj tsav ntau dhau. Ntxiv mus, yog tias cov lus tawm tswv yim hais txog cov xov tooj cua tau muab ob npaug, tom qab ntawd cov txheej txheem sab saum toj yuav siv ib qho ntawm cov lus teb tau txais txiaj ntsig rau cov tswv yim thiab tom qab ntawd sib txawv ntxiv ntawm cov txiaj ntsig tau txais txiaj ntsig.

Qhov teeb tsa no tuaj yeem ua haujlwm rau ob qho tib si qhia meej txog kev tsim qauv thiab tso cai rau ntau qhov kev taw qhia / xaiv kev nthuav dav. Hauv qab no yog daim duab ntawm kev npaj nrog cov qauv tsim cov lus xaus uas nthuav tawm. Cov txheej txheem sab saum toj no yog qhov tseem ceeb cuam tshuam los ntawm qhov kawg overdrive Circuitry uas yuav suav nrog nws ua lub hauv paus tseem ceeb ob peb zaug los tswj tus qauv ua haujlwm.

Txhawm rau saib qee yam yooj yim dua, rau qee qhov zaus peb siv Formula 2 thiab Formula 3.

Qhov sib npaug tiag rau AGain ntawm qhov tshwj xeeb zaus f yog li Formula 4 uas sib cais ntxiv los tsim qhov Formula 5 kawg.

Raws li qhov pom tau tias qhov no zoo ib yam rau qhov sib ntxiv ntawm qhov sib npaug yooj yim saum toj no tshwj tsis yog qhov sib koom ua ke tau txais los ntawm lub tshuab hluav taws xob uas tsis tu ncua. Hauv kev xaus qhov kev teb tau nce ntawm txhua qhov kev tshaj tawm dhau los cov lus teb topology ceg tau sib xyaw.

Lub hom phiaj ntawm cov kev npaj no yog kom tau txais ntau qhov kev nthuav dav zoo ntawm cov teeb liab nkag mus rau ntau zaus kom nyob ntawm qhov ntau dua uas qhov OpAmp qhov nce tau raug txo, peb tuaj yeem qhia ntau ntxiv. Ntawm qhov hluav taws xob qis lub suab tuaj yeem khaws cia los ntawm cov qis zaus txawm hais tias lub hauv paus tsis siab heev.

Kauj Ruam 4: Daim duab Circuit Court

Daim duab Circuit Court
Daim duab Circuit Court

Kauj Ruam 5: Piav Qhia

Circuit piav qhia
Circuit piav qhia
Circuit piav qhia
Circuit piav qhia
Circuit piav qhia
Circuit piav qhia

SLG88103/4V suav nrog kev tiv thaiv kev tiv thaiv los tiv thaiv overvoltage ntawm nws cov tswv yim. Kev tiv thaiv diodes ntxiv tau ntxiv ntawm thawj theem ntawm kev tawm tswv yim dhau los rau kev tsim qauv muaj zog ntxiv.

Thawj theem kev hloov pauv ua raws li thawj theem siab tsis cuam tshuam thiab nthuav tawm thawj zaug los npaj rau qib dhau los. Kev nce yog nyob ib puag ncig ob txawm hais tias nws txawv nrog zaus. Nyob rau theem no kev saib xyuas yuav tsum tau ua kom ntseeg tau tias lub suab nrov qis qis, vim tias txhua qhov kev nthuav dav ntawm theem no tau muab tso rau hauv kev ua kom muaj zog ntau dua.

Ua raws li mus rau theem dhau mus, qhov twg lub teeb liab yuav dhau mus rau qhov tau txais txiaj ntsig ntau, xaiv xaiv qhov kev hloov pauv ntxiv kom ntseeg tau tias qhov ntau dua tau txais qhov ntawd txhawb rau kev nthuav dav zoo ib yam, thiab txuas ntxiv peb ua rau txiav siv ob lub diodes nyob rau hauv pem hauv ntej coj ua hom. Ib qho yooj yim lim qis dhau los ua cov suab nrov, thiab qhov no ua rau lub ntim yooj yim potentiometer thiab qhov tsis tuaj yeem tsav cov zis.

Tsuas yog peb ntawm on-board Operational Amplifiers tau siv, thiab qhov kawg tseem tshuav yog txuas txuas raws li qhov tsim nyog "teeb tsa kom raug rau OpAmps tsis siv". Yog xav tau, 2 x SLG88103V'S tuaj yeem siv hloov chaw ib leeg SLG88104V.

Lub zog hluav taws xob qis tshaj tawm lub diode qhia txog lub xeev. Qhov tseem ceeb ntawm nws yog lub zog hluav taws xob tsawg tsis tuaj yeem hais tsis tau vim yog qhov tsis muaj dej ntws qis thiab khiav lub zog ntawm SLG88104V. Lub zog siv hluav taws xob loj los ntawm Circuit yuav yog lub zog ntsuas LED.

Qhov tseeb, vim tias qhov qis tshaj 375 nA tam sim no, lub zog txiav txim siab rau SLG88104V yog qhov tsawg heev. Feem ntau ntawm kev poob hwj chim yog los ntawm kev txiav qis qis qis thiab cov emitter follower resistor. Yog tias peb ntsuas qhov kev siv tam sim no ntawm qhov ua tiav ntawm qhov tsis txaus ntseeg tam sim no, nws hloov pauv tsuas yog kwv yees li 20 µA, nce mus txog ib puag ncig siab tshaj 90 µA thaum ntaus guitar. Qhov no me me piv rau 2 mA siv los ntawm LED thiab yog vim li cas kev siv lub zog qis LED yog qhov tseem ceeb. Peb tuaj yeem kwv yees kwv yees lub neej nruab nrab ntawm ib lub roj teeb AA alkaline kom ntws los ntawm tag nrho mus rau 1 V yog ib puag ncig 2000 mAh* ntawm qhov tso tawm ntawm 100 mA. Ib khub tshiab ntawm cov roj teeb uas tsim tawm 3 V yuav tsum muaj peev xwm dhau 4000 mAh. Nrog LED nyob rau hauv qhov chaw peb ntsuas ntsuas 1.75 mA kos los ntawm qhov peb tuaj yeem kwv yees ntau dua 2285 teev lossis 95 hnub ntawm kev siv txuas ntxiv. Vim tias overdrives yog lub zog ua haujlwm peb cov overdrive tuaj yeem tsim "lub ntuj raug txim ntawm kev ncaws" ntawm kev siv tam sim no. Raws li cov lus ceeb toom, ob lub roj teeb AAA yuav tsum nyob ib nrab ntawm lub sijhawm AA.

Hauv qab no yog tus qauv ua haujlwm ntawm cov kab hluav taws xob overdrive no. Pom tseeb, ib yam li cov ko taw, tus neeg siv yuav tsum tau kho cov teeb tsa kom pom lub suab uas zoo tshaj rau lawv. Tig lub amp nruab nrab thiab ntses bass thaj tsam siab dua treble zoo li muab lub suab txias txias dhau rau peb (raws li treble tau hnyav dua). Tom qab ntawd nws zoo li lub suab nrov zoo li qub.

Vim tias SLG88104V cov pob me me thiab siv hluav taws xob tsawg heev, peb tau ua tiav hauv kev ua tiav lub zog qis overdrive pedal uas tsis hnyav thiab ua haujlwm tsuas yog siv ob lub xaum roj teeb rau lub sijhawm ntev.

Cov roj teeb AA tau npaj ntau dua, thiab muaj qhov ua tau tias lawv yuav tsis hloov pauv mus rau lub neej ntawm ib chav haujlwm twg, ua rau nws yooj yim kho thiab yooj yim rau kev nyab xeeb. Ntxiv mus, nws tuaj yeem tsim nrog cov lej me me ntawm cov khoom siv sab nraud, yog li nws tuaj yeem ua tus nqi qis, yooj yim ua, thiab raws li tau hais ua ntej, lub teeb yuag.

* Tau qhov twg los: Energizer E91 Datasheet (saib kab duab kab), powerstream.com

Cov lus xaus

Hauv Cov Lus Qhia no peb tau tsim lub tswb hluav taws xob qis uas tsis muaj zog overdrive pedal.

Ib cag los ntawm kev tuav cov txheej txheem sib piv rau GreenPAK qhov sib xyaw teeb liab IC's thiab lwm cov khoom siv hluav taws xob ib leeg, GreenPAK's Rail rau Rail Tsawg Voltage, Tsawg Tam Sim No OpAmp's tau pom tias muaj txiaj ntsig hauv kev tsav tsheb ntau dhau. Lawv yog tus kheej hauv ntau lwm daim ntawv thov thiab tshwj xeeb tshaj yog muaj txiaj ntsig hauv daim ntawv thov lub zog.

Ntxiv mus, yog tias koj txaus siab rau kev tsim hluav taws xob kom zoo txaus los teeb tsa koj tus kheej IC cov qauv tsim kom rub tawm peb GreenPAK software muaj txiaj ntsig zoo rau cov qauv tsim lossis tsuas yog saib cov GreenPAK Tsim Cov Ntaub Ntawv muaj nyob hauv peb nplooj ntawv. Kev tsim vaj tsev yuav yooj yim dua, txhua yam koj yuav tsum tau ua yog txhawm rau GreenPAK Kev Txhim Kho Khoom Siv rau koj lub khoos phis tawj thiab ntaus qhov program los tsim koj li kev cai IC.

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