Turntable (phono) Preamp Nrog RIAA Kho: 7 Kauj Ruam

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

Nyob zoo. Nov yog kuv thawj qhov kev qhia. Kuv pom PCB sib tw yuam kev thiab txiav txim siab qhia qhov haujlwm no. Lub preamplifier no tau ua thaum Lub Peb Hlis-Plaub Hlis 2018. Zaj dab neeg pib thaum ib tus phooj ywg, leej twg yog tus tsim khoom thiab DJ, Mihail P, yuav lub tshuab cua. Nws paub sai uas tsis tuaj yeem siv nws yam tsis muaj phono preamplifier thiab thov kom kuv ua. Txhawm rau txuag lub sijhawm, kuv pib tshawb fawb thiab muaj hmoo kuv pom ib qho hauv ib qho kev tshawb fawb thiab txuj ci xov xwm los ntawm kuv lub tebchaws. PCB rau txoj haujlwm no tsis muaj khoom yog li kuv txiav txim siab ua kuv tus kheej. Thiab kuv hlub nws.

Cov lus uas koj pom ntawm PCB, thiab ntawm cov cim ntawm lub npov, yog lus Macedonian nrog Cyrillic cov tsiaj ntawv. Tab sis tsis txhob txhawj. Kuv rov ua dua txhua cov ntaub ntawv Eagle Cad thiab Cov Ntawv Sau ua lus Askiv thiab lawv tau muab tso rau ntawm no.

CEEV FAJ! Kev pheej hmoo ntawm hluav taws xob poob siab! Ib feem ntawm txoj haujlwm no yog siv hluav taws xob siab. Ceev faj.

Dab tsi yog phono preamp?

Phono preamplifier, yog lub cuab yeej siv suab uas nthuav tawm lub suab tso tawm los ntawm koj lub turntable. Feem ntau, tso tawm los ntawm lub tshuab raj tau qis heev thiab yog tias koj txuas lub turntable ncaj qha rau koj lub kaw lus suab koj yuav hnov lub suab qis heev. Qhov no yog vim li cas cov teeb liab yuav tsum tau ua kom nrov nrov. Phono preamp yuav tsum tau muab tso nruab nrab ntawm koj lub turntable thiab koj lub suab system.

RIAA kho/sib npaug yog dab tsi?

Nws yog qhov nyuaj, thiab tsis tas yuav tsum tau piav qhia ntxaws ntawm no. Tab sis luv luv, thaum lub suab kaw rau yas, ntau zaus sib txawv tau sau tseg nrog qhov sib txawv thiab qhov nrawm dua li qhov lawv tiag tiag, thiab muaj qhov laj thawj rau qhov ntawd. Qhov no hu ua RIAA kho/sib npaug. Vim li ntawd, nyob rau lwm qhov kawg, thaum lub turntable rov tsim dua lub suab, nws yuav tsum tau thov rov qab RIAA kho/sib npaug rau lub suab kom zoo li ua ntej kaw.

Yog tias koj xav paub ntau ntxiv txog qhov no, koj tuaj yeem nrhiav cov ncauj lus kom ntxaws hauv is taws nem.

Txoj haujlwm tau muab cais ua ob pawg PCB. Thawj qhov yog rau kev siv fais fab. Nws yog Dual thiab raws li Transformer nrog ob theem kev sib tw thiab qhov zoo thiab tsis zoo tawm qhov ntsuas hluav taws xob. Qhov thib ob yog preamplifier. Nws yog raws li op-amp TL074. Raws li lub thawv rau ob lub PCBs no tau siv PC PSU qub. Nrog kev ua haujlwm me me ntawm lub thawv thiab nrog ob daim ntawv lo, thaum kawg nws yuav zoo nkauj heev thiab paub tseeb tias koj yuav nyiam nws.

Txhua Dav Dav Dav, Cov Ntawv Cim (Corel DRAW) thiab cov ntawv PDF tau muab tso rau ntawm no. Koj tuaj yeem ua txoj haujlwm no txawm tias koj tsis muaj Eagle Cad vim tias PCB tau xa tawm mus rau PDF npaj rau luam tawm.

Thov txim yog tias kuv tau ua yuam kev hauv kev sau. Lus Askiv tsis yog kuv hom lus.

Cia saib qhov khoom kawg …

Kauj Ruam 1: Txheeb Xyuas Qhov Khoom Kawg

Kuv ntseeg tias yog qhov zoo thawj zaug los saib seb cov khoom kawg zoo li cas, thiab tom qab ntawd mus ib kauj ruam zuj zus kom ua tiav. Vim li ntawd, ntawm no yog ob daim duab ntawm cov khoom kawg.

Kauj ruam 2: Txheej txheem cej luam ntawm Schematics

Hwj chim Mov

Schematic rau lub hwj chim tau paub zoo thiab yooj yim mus nrhiav hauv internet. Kuv tab tom siv lub tshuab hloov pauv nrog cov hluav taws xob tso tawm ntawm +15V/-15V thiab cov ntsuas hluav taws xob ncaj qha 7812 (rau qhov ntsuas hluav taws xob zoo) thiab 7912 (rau qhov tsis zoo). Qhov no txhais tau tias qhov hluav taws xob tso tawm ntawm txoj cai tswj hwm yuav yog +12V/-12V. Qhov no tau tso cai ntau rau preamp IC (TL074), uas yog los ntawm +9V/-9V txog +15V/-15V.

Koj tuaj yeem siv lwm tus hloov pauv thiab cov cai tswj hwm los ntawm koob 78XX thiab 79XX, tab sis nco ntsoov tias txhua yam nyob hauv qhov kev tso cai. Nov yog qhov tseem ceeb kom paub tias qhov hluav taws xob tso tawm ntawm lub tshuab hloov pauv yuav tsum muaj tsawg kawg 2Volt siab dua qhov tso tawm hluav taws xob ntawm cov tswj kab tawm.

Preamplifier

Schematic rau preamplifier, raws li kuv tau hais los lawm, yog los ntawm EMITER, kev tshawb fawb thiab thev naus laus zis los ntawm Macedonia. Lawv muab kev pom zoo rau kuv los qhia qhov haujlwm no ntawm no. Lawv lub vev xaib yog www.emiter.mk.

Lub plawv ntawm preamp yog IC1, TL074. Nws muaj plaub lub tshuab ua haujlwm zoo hauv nws pob. Ob ntawm lawv tau siv rau sab laug suab channel thiab lwm qhov ob rau sab xis. Nyob ib puag ncig nrog so ntawm cov tivthaiv nws thov tsim nyog RIAA kho/sib npaug thiab xav tau kev nthuav dav. Thawj theem (IC1A thiab IC1D) muab kev nthuav dav ntawm 22 zaug. Qib thib ob (IC1B thiab IC1C) muab lwm 4.5 zaug. Nyob rau hauv tag nrho nws yog 100 zaug amplification lossis 40dB. Qhov no yog qhov txaus rau kev xav tau ntawm turntable khaws nrog MM (txav cov hlau nplaum) lossis MC (txav kauj).

Kauj Ruam 3: PCB

Kuv tabtom ua PCS nrog hloov pauv toner, siv cov ntawv ci thiab dov nrog cov yeeb nkab inox ntawm phaj kub. Rau etching Kuv siv 12% hydrogen peroxide thiab 15-20% HCL. Muaj ntau txoj hauv kev los ua PCB. Feem ntau ntawm lawv nyob ntawm no cov lus qhia. Nov yog qhov laj thawj vim li cas kuv yuav tsis qhia koj ib qib zuj zus tias yuav ua li cas, tab sis tsuas yog qhov tshwm sim. Yog lawm, muaj cov neeg txaus uas yuav nyiam paub tias kuv ua PCB li cas, kuv yuav ua tus qhia tshiab rau qhov no xwb.

Thaum koj muab cov khoom siv hluav taws xob pov tseg, saib xyuas qhov sib txawv thiab kev taw qhia ntawm cov khoom.

Daim ntawv teev npe rau Pawg Tswj Fais Fab:

TR1 = 2x15V ntawm cov zis. Cov tswv yim yuav yog 110V lossis 220V. Qhov no nyob ntawm koj lub tebchaws.

D1-D4 = 1N4007C1, C2 = 2200uF/=> 25VC3, C4 = 100nF/=> 25VC5, C6 = 220uF/=> 16VC7, C8 = 100nF/=> 16VIC1 = 7812IC2 = 7912

J1 tsis tsim nyog. Nws tsuas yog siv rau lub hom phiaj sim. Qhov no yog qhov tso tawm ntawm Cov Khoom Siv Hluav Taws Xob thiab yuav txuas nrog cov xov hlau mus rau pawg thawj coj ua ntej.

Daim ntawv teev npe rau Preamplifier Board:

R1, R7 = 47kR2, R8 = 2, 2kR3, R9 = 68kR4, R10 = 5, 1kR5, R11 = 150kR6, R12 = 15kC1, C5, C6, C10 = 100pC2, C7 = 1nC3, C8 = 1, 5uC4, C9 = 22nC11, C12 = 100nIC1 = TL074 Ib zaug ntxiv, tsis tas yuav muaj J1-J5. Lawv tsuas yog siv los ntsuas lub hom phiaj.

Rau lub suab zoo dua siv cov qib qib lub kaus mom ntawm pawg thawj coj ua ntej.

Cov cuab yeej xav tau:

Koj nyiam cov cuab yeej rau drillingSolderCutting pliers

Lwm yam xav tau:

Cov hlau xaim

Kauj Ruam 4: Npaj Lub Thawv

Raws li lub thawv rau txoj haujlwm no yuav siv lub thawv los ntawm PC PCU qub. Nws zoo li lub npov no tau ua kom raug rau peb cov kev xav tau. Hauv theem no peb yuav qhib lub hau npog, tshem cov hluav taws xob qub uas nyob sab hauv thiab ua qee qhov xyaum thiab txiav. Ua raws cov lus qhia hauv cov duab.

Tom qab koj ua tiav cov lus qhia los ntawm cov duab lo koj daim ntawv lo kawg thiab teeb tsa cov hauv qab no:

1. 16 hli hloov lub foob pob hluav taws. Nco ntsoov tias ON, (cim raws li kuv) yog ib sab.

2. Ob channel, vaj huam sib luag mount, RCA lub qhov (socket). Siv M3 ntsia hlau thiab txiv ntseej los ntsaws lub qhov (socket) no.

Cov cuab yeej xav tau:

Philips ntswj ntsia hlau

Kauj Ruam 5: Muab Peb Lub Tshuab Hluav Taws Xob Sab Hauv Lub Thawv

Siv ob daim ntoo, dav txaus los ntsaws peb ob lub PCB rau lawv. Koj tuaj yeem lo ob daim ntoo no rau ntawm lub npov, lossis koj tuaj yeem laum qhov hauv qab ntawm lub thawv thiab ntsia nws. Nws nyob ntawm koj.

Ua ntej koj ntswj PCB rau ntawm cov ntoo, koj yuav tsum tau muab qee cov xov hlau txuas. Ua ntej tshaj, muab peb lub xov hlau tso rau ntawm Lub Hwj Huam Lub Hwj Chim. Cov xov hlau no yog -12V, 0V, +12V, thiab tsis yog qhov tseem ceeb. Kuv tab tom siv xov hlau los ntawm cat5 LAN cable. Ntawm no yog qhov tseem ceeb kom xaim txhua lub xaim mus rau qhov chaw raug. Rau qhov no ua raws cov txheej txheem lossis pom hauv cov duab. Rau kev ua haujlwm zoo dua kuv tab tom siv xov hlau nrog cov xim sib txawv. Xiav rau -12V, Dawb rau 0V thiab Liab rau +12V. Solder lwm qhov kawg ntawm cov xov hlau no rau lub zog tawm tswv yim ntawm preamplifier board. Hauv peb qhov no yog qhov yooj yim. Thawj mus rau thawj, thib ob mus rau thib ob thiab thib peb mus rau thib peb. Ntawm lub rooj tsavxwm no koj yuav xav tau cov laug txuas thiab cov kab hluav taws xob rau kev tawm tswv yim thiab tso suab. Tam sim no, qhov zoo ntawm txoj hlua yog qhov tseem ceeb. Yuav cov kab hluav taws xob, lossis siv qee qhov los ntawm lub mloog pob ntseg qub, pob ntseg lossis hais lus. 15cm (~ 6inch) xov hlau yuav txaus rau txhua lub channel, rau kev tawm tswv yim thiab tso tawm suab. Saib cov duab.

Tom ntej no, koj yuav tsum tau txuas ob lub xov hlau rau HIGH VOLTAGE cov tswv yim ntawm Lub Rooj Sib Tham Fais Fab. Kuv qhia koj kom siv cov xov hlau uas koj tsis tau muag ua ntej. Siv ib lub xaim los ntawm Neutral solder point ntawm Lub Hwj Huam Muab Khoom Siv rau lub Neutral davhlau ya nyob twg ntawm C14 lub qhov hluav taws xob. Tom qab ntawd, Cuam ib txoj xov hlau los ntawm Live qhov taw tes ntawm Lub Hwj Huam Lub Hwj Chim mus rau ib qho ntawm qhov txuas ntawm lub zog hloov pauv. Thiab txuas ib lub xaim los ntawm lwm lub davhlau ya nyob twg ntawm lub zog hloov mus rau Lub davhlau ya nyob twg ntawm C14 lub qhov hluav taws xob. Tam sim no koj tuaj yeem ntsia hlau ntawm lub rooj ntoo no. Thaum kawg, muab ib txoj hlua txuas rau hauv av hauv av ntawm C14 lub qhov hluav taws xob. Cov xaim no yuav tsum yog 25cm (~ 10inch) ntev. Ua tib zoo xyuam xim. Qhov no yog HIGH VOLTAGE. Nco ntsoov tias tsis muaj luv thiab txhua yam txuas nrog raug. Saib cov duab thiab ua raws li cov lus qhia.

Tom qab ntawd, muab cov kab hluav taws xob tso rau hauv nruab nrab kais ntawm RCA lub qhov (socket), thiab xaim av rau sab nrauv ntawm lub qhov (socket). Ua qhov no rau ob qho kev nkag mus. Saib cov duab.

Tom ntej no, ntawm lub davhlau ya nyob twg sab saum toj ntawm lub foob pob hluav taws hloov pauv, xaim hauv av xaim uas peb tau tshem tawm los ntawm C14 txuas lub zog. Lwm qhov kawg ntawm cov xaim no, ua ke nrog 25cm (~ 10inch) xaim uas peb tau muab tso rau ntawm C14 av dav hlau, yuav tsum tau kaw kom nruj rau cov ntsia hlau ntawm nruab nrab-sab saum toj ntawm lub hau npog. Rau qhov no peb yuav siv M5 ntsia hlau. Muab ib lub tshuab ntxhua khaub ncaws tso rau ntawm lub hau ntswj thiab tso ob lub xov hlau hauv av uas peb nyuam qhuav hais los no. Muab cov ntsia hlau no tso rau hauv lub qhov ntawm lub hau thiab ntawm sab nraud tso lwm lub tshuab ntxhua khaub ncaws. Tshaj li nruj qhov no nrog txiv ntoo.

Muab ob lub tshuab ntxhua khaub ncaws ntxiv thiab tom kawg kaw nrog lub txiv ntseej tis. Nruab nrab ntawm ob lub tshuab ntxhua khaub ncaws yuav ua kom nruj cov xov hlau hauv av uas yuav mus los ntawm turntable mus rau lub preamplifier no. Txiv ntseej tis yog kom yooj yim nruj nrog tes.

Tam sim no, muab ib lub xaim los ntawm tus pin 1 ntawm 3.5mm lub tso suab tso suab, mus rau lub davhlau ya nyob twg ntawm lub foob pob hluav taws hloov uas ib sab thiab mus rau sab nrauv ntawm lub qhov (socket) RCA. Koj tuaj yeem pom tus pin 1 ntawm daim duab.

Tom ntej no, txuas lub teeb liab rau txoj cai tso tawm channel rau tus pin 2 ntawm 3.5mm lub tso suab lub tso suab, thiab teeb liab xaim rau sab laug tso tawm channel rau tus pin 5. Twist av xov hlau rau ob txoj hauv kev thiab txuas lawv rau tus pin 1.

Nov yog ib qho tseem ceeb. Nco ntsoov tias qhov ua tau zoo ntawm qhov txuas uas yog rau zawm lub 3.5mm lub qhov (socket), tsis txhob kov lub hau. Vim li no ua rau lub qhov me me loj dua thiab muab daim kab xev cais rau sab hauv sab hauv ntawm lub npog thiab cais cov tshuab ntxhua khaub ncaws ua ntej txiv ntoo ntawm sab nraud. Saib cov duab.

Tsuas yog kom ntseeg tau, ntsuas kev ua haujlwm ntawm lub thawv thiab cov txiv ntoo nrog multimeter. Koj tsis xav kom muaj conductivity.

Thaum kawg, kaw lub hau.

Cov npe:

2 x ntoo ntoo 4 ntsia hlau lossis kua nplaum los lo cov ntoo no nrog lub thawv. 8 ntsia hlau rau zawm cov laug cam rau ntoo ntoo. 2 x M3 ntsia hlau thiab txiv ntoo rau RCA qhov ntsaws 1 x M5 ntsia hlau, 4 x tshuab ntxhua khaub ncaws, 1 x txiv ntoo hexagonal thiab 1 x tis txiv ntseej rau hauv av ntawm npog. 1 x Lub tso suab RCA rau kev teeb tsa vaj huam sib luag (piv txwv) 1 x 16mm hloov lub foob pob hluav taws (dub lossis dawb) 1 x 3.5 mm lub tso suab tso suab rau lub vaj huam sib luag mount (piv txwv) 1 x cais tshuab ntxhua khaub ncaws 4 x 15cm (~ 6inch) suab cablesWires los ntawm lub rooj tsav xwm fais fab rau preamp1 x 25cm (~ 10inch) xaim rau txuas hauv av hauv av ntawm C14 lub qhov hluav taws xob ntswj rau ntawm lub hau.

Cov cuab yeej xav tau:

Solder ironPliersCutting PliersElectric drillRotary tool or angle grinderFlat and philips type screwdriver. Utility knife

Lwm yam xav tau:

Cov hlau xaim

Kauj Ruam 6: Txuas Nrog Turntable

Txuas cov zis los ntawm koj lub turntable rau cov tswv yim ntawm lub preamplifier no. Tom qab ntawd txuas cov zis los ntawm lub preamplifier, rau koj lub suab kaw lus. Nws yog ib qho tseem ceeb heev uas yuav tsum tau siv cov suab zoo suab zoo. Thaum kawg, siv cov xov hlau thiab txuas hauv av los ntawm turntable thiab hauv av los ntawm koj lub suab (yog tias nws muaj) mus rau hauv av ntawm preamplifier.

Hloov lub foob pob hluav taws hloov pauv yog siv los cais lossis txuas lub teeb liab thiab lub hauv paus tseem ceeb. Nws tuaj yeem pab tiv thaiv kom tsis txhob muaj av hauv av thiab ua kom nrov nrov. Humming tuaj yeem yog teeb meem loj hauv suab.

Nov yog uploade tag nrho Eagle Cad, Corel (Labels) thiab PDF cov ntaub ntawv hauv ib daim ntawv RAR.

Kauj ruam 7: Txaus siab rau

Txaus siab rau mloog koj cov nkauj thaum koj ua lub preamplifier.

Nov yog daim vis dis aus ntawm preamlifier hauv kev nqis tes ua.

Ua tsaug rau koj lub sijhawm.

Nrog hwm, Zoran Velinov Saamoday