TSIS YOG* Zoo li BOSS Kev Txom Nyem: 4 Kauj Ruam (nrog Duab)

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

Nkees ntawm tib lub qub Boss-zoo li dual-diode-clamp distortion pedals?

Xav tau lub tsheb kauj vab uas muaj cov tsheb thauj khoom ntawm npau taws ntaus guitar, ncaj ncaj rau ntawm ciam teb ntawm kev qias neeg, tseem yog tseem muaj peev xwm ntawm mellow bluesy overdrive?

Xav tau lub stompbox uas tso cai rau koj qhib lub suab tsis zoo li cas, tsis yog tsuas yog xaiv ntawm 'crappy' thiab 'txawm tias crappier'?

Tom qab ntawv tus pedal no yog rau koj.

CEEB TOOM: Cov xwm txheej tsis sib xws ua ntej

Tus *Tsis *-Like-a-Boss-Distortion pedal siv lub transistor raws li tsis yog xov tooj ntawm tes, uas tso cai rau koj kho cov duab ntawm qhov txawv txav.

Kuv yuav piav qhia yuav ua li cas txhawm rau txhim kho tus ncej, yuav ua li cas Circuit Court ua haujlwm kom koj tuaj yeem ua rau koj cov phooj ywg zoo siab, thiab hav, tsuas yog vim koj tau nyem thiab nyeem cov lus qhia no, Kuv yuav txawm muab qee cov lus qhia yuav ua li cas los kho tus pedal no kom nws txawm ntau txawv! Kuv yuav xav tias koj muaj qee qhov kev paub nrog lub tsheb kauj vab/lub tsev tsim khoom. Yog tias muaj dab tsi tsis meej, thov hu dawb.

Nyeem rau…

Kauj ruam 1: Circuit Court

Cov txheej txheem tiv thaiv kab rov tav diode clampers raug txwv nyob rau hauv uas cov duab ntawm kev cuam tshuam yog ib txwm zoo ib yam. Kuv tau pom qee tus pedals uas sim daws qhov no los ntawm kev tso cai koj hloov hauv ob peb hom sib txawv ntawm diodes/leds, tab sis nws tseem muaj qee qhov txwv. Tus pedal no siv qhov tshwj xeeb uas tsis yog linear transistor Circuit (Q1 thiab Q2), uas tso cai rau koj los tswj cov duab ntawm qhov tsis sib xws nyob txhua qhov chaw los ntawm qhov ntiav saturation mus rau qhov txaus ntshai tsis-monotonic teb. Yuav ua li cas? theem nkag, U1a yog lub suab nrov yooj yim uas DC kev tsis ncaj ncees thiab nce tau tuaj yeem tswj tau, tsis muaj qhov tshwj xeeb nyob ntawd. Saib xyuas tias cov xov tooj ntawm tes tsis sib thooj nyob ib puag ncig ntawm lub ntsiab lus 'a', uas yog DC ib nrab ntawm cov khoom siv los ntawm U1b, yog li kom nkag siab tias qhov no ua haujlwm li cas, nws txaus los saib ntawm ib nrab (Q1, R8, R9, R12 thiab R18). Piv txwv tias lub rhaub dej ntawm R12 tig kiag mus rau sab xis. Tom qab ntawd R8, R9 thiab Q1 tsim qhov uas paub tias yog 'roj hmab zener': Q1 yuav yog qhov clamp zoo nkauj, qhov uas nws tsis yog rau R18, uas ua rau nws zoo li qhov clamp tsis zoo. Uas yog qhov zoo yog tias koj xav tau qhov muag tsis zoo ib yam. Tam sim no, yog tias lub rhaub dej ntawm R12 tig kiag mus rau sab laug, tom qab ntawd peb tau txais qhov tsis zoo uas tsis yog monotonic 'tsoo' zoo li cov lus teb. Qhov no txhais tau tias rau qhov ntsuas hluav taws xob me me, qhov hluav taws xob tso tawm (tus sau ntawm Q1) yuav ua raws qhov ntsuas hluav taws xob. Thaum cov tswv yim hluav taws xob siab txaus (0.6V ntawm lub hauv paus) hloov pauv ntawm Q1, cov zis yuav pib poob qis nrog nce qhov hluav taws xob nkag. Qhov no ua rau 'pob' teb: suab nrov heev. Yog li cov 'duab' lub lauj kaub tso cai rau koj los kho lub kaum sab sauv thiab qis dua cov duab sib cais, thaum qhov 'tsis ncaj ncees' teeb tsa tso cai rau koj xaiv qhov twg hauv qhov tsis ua haujlwm tsis ua haujlwm koj 'xoom' lossis so taw tes yog. Lub suab nrov thiab ntim qib tswj tau tsuas yog qhov ntawd: lub suab qis dhau yooj yim thiab qib tswj kev tso tawm. Lub vijtsam oscilloscope muab qee lub tswv yim ntawm qhov ua tau.

Nco tseg tias cov xov tooj ntawm tes uas tsis yog kab sib chaws tsis yog qhov sib npaug: R18 thiab R19 tsis sib xws. Qhov no tau ua tiav los ntawm lub hom phiaj los muab kev xaiv ntau rau koj.

Tswv yim: qhib R18 thiab R19 rau koj tus kheej nyiam, lossis zoo dua: hloov nws nrog lwm qhov sib txawv tiv thaiv kom muaj kev ywj pheej ntau dua.

Cov Lus Qhia Ntxiv: hloov R8 thiab R9 thiab zoo ib yam R10 thiab R11 nrog lub lauj kaub, wipers mus rau lub hauv paus ntawm Q1 thiab Q2 feem. Pom tseeb qhov no yuav tsis haum rau hauv 1590B ntxiv lawm.

TL; DR: Lub voj voog no txaus. Kuv vam tias kuv tau mloog zoo dua hauv 'Circuits 101'.

Kauj ruam 2: Tsim Circuit Court

Lub voj voog tuaj yeem yooj yim tau muab pov rau ntawm ib qho ntawm perfboard. Qhov xwm txheej, transistors Q1 thiab Q2 tuaj yeem hloov nrog txhua hom me me-teeb liab transistor. Tib yam mus rau TL072 JFET input opamp. Tsis muaj qhov tshwj xeeb xav tau ntawm no.

Kauj Ruam 3: Tsim Qhov Ruaj Ntseg

Lub Circuit Court yog nyob hauv qhov chaw Hammond 1590B nrov. Kuv tau tsim tus qauv rau sab xub ntiag hauv Inkscape. Tus 'bossy' saib tus cwj pwm yog ib yam uas ntab ncig hauv internet. Koj tuaj yeem yooj yim kho qhov tsim (.svg) rau koj tus kheej xav tau yog tias koj xav ua li ntawd.

Cov kauj ruam los npaj lub thawv ntawv yog tib yam li ntawm no:

www.instructables.com/id/Screaming-EX-Boos…

Nov yog qhov nws mus:

• luam tawm cov qauv tsim ntawm daim ntawv, txiav tawm thiab kaw kab xev rau hauv lub thawv ntawv,
• kos cov haujlwm rau lub qhov nrog cov khoom ntse thiab rauj,
• laum lub qhov, siv lub iav kev nyab xeeb rau pob ntseg, qhov muag thiab txhais tes (Kuv txhais tau tias!)
• ceev faj nrog txoj haujlwm ntawm lub hwj chim nkaus li lub lauj kaub muaj ib nrab hauv qab nws,
• ntxuav lub thawv, tsuag xim nws nrog ob peb txheej xim (qhov no yuav siv qee qhov kev xyaum),
• luam qhov tsim ntawm daim ntawv lo daim ntawv lo, txiav tawm thiab lo rau ntawm lub thawv ntawv. nco ntsoov kom tsis txhob muaj cua npuas,
• siv ob peb txheej ntawm cov txheej kom meej,
• lo ib co roj hmab taw rau lub hau.

Kauj Ruam 4: Sib dhos Pedal

Yuav luag muaj!

Tom ntej no sau cov lauj kaub, hloov thiab txuas. Cov kab laug sab luv (10cm, 4 ``) ua. Kuv tau txais cov no los ntawm tus tswv lag luam hauv zos. Ceev faj tsis khawb cov xim.

Ib daim yas los ntawm lub raj mis dej qab zib tau txiav rau qhov loj me thiab sib dhos ib ncig ntawm lub rooj tsav xwm hauv Circuit Court los tiv thaiv nws tiv thaiv luv.

Muab daim ntawv me me tso rau hauv lub thawv ntawv. Qhov no yuav pab tau yog tias koj yuav tsum kho nws qee hnub.

Qhov ntawd yog nws. Marvell ntawm koj qhov kev tsim!

Nco ntsoov qhia rau kuv paub koj cov txiaj ntsig yog tias koj tsim NLABD.

Muaj kev lom zem!

Kho kom raug: Thawj lub suab piv txwv yog nce thiab tsis ncaj rau 12h, zoo li 1 txog 9h, zoo li 2 txog 3h. Qhov piv txwv thib ob thib ob yog nrog qhov nce ntawm qhov siab tshaj plaws, kev ncaj ncees 12h, cov duab 1 thiab cov duab 2 rau qhov siab tshaj plaws. Tsis muaj lwm txoj hauv kev, tsuas yog ntaus cim guitar mus rau NLAB, rau hauv PC. Thov txim qhov ua tsis zoo;-)