Hauv tsab xov xwm koj yuav kawm yuav ua li cas ua lub raj amplifiers nrog koj tus kheej tes los ntawm cov ntaub ntawv improvised. Nws tsis muaj qhov zais cia tias lub suab raj zoo nkauj tshaj plaws, nws cov kiv cua yuav muaj nyob txhua lub sijhawm, txawm hais tias kev ua lag luam muaj ntau cov khoom siv me me raws li cov transistors thiab microcircuits. Ua tib zoo saib seb koj yuav tsum xav txog dab tsi thaum tsim lub raj amp.
Khoom noj yog qhov nyuaj
Yog, nws yog nrog lub zog uas muaj teeb meem tuaj yeem tshwm sim, txij li koj yuav xav tau ob qhov txiaj ntsig ntawm AC voltage: 6.3 V rau lub zog ntawm cov filaments thiab 150 V rau cov anodes ntawm lub teeb. Thawj qhov koj yuav tsum paub txog koj tus kheej yog lub zog ntawm kev tsim yav tom ntej. Lub hwj chim ntawm lub transformer rau lub hwj chim mov nyob ntawm qhov no. Thov nco ntsoov tias lub transformer yuav tsum muaj peb windings. Yog tias tsis muaj lub zog zoo li no, koj tsis tuaj yeem ua lub raj xa hluav taws xob nrog koj tus kheej tes.
Ntxiv rau cov lus hais saum toj no, yuav tsum muaj lub network (primary) ib qho. Nws yuav tsum muajntau lem rau lub transformer ua hauj lwm ib txwm. Thiab txawm tias muaj qhov tseem ceeb (thiab lub zog nce mus txog 250 V), lub winding yuav tsum tsis txhob overheat. Tau kawg, qhov ntev ntawm cov khoom siv hluav taws xob yuav loj dua vim qhov loj ntawm qhov hloov pauv.
Rectifier
Koj yuav tau ua lub rectifier kom tau txais yam tsawg kawg nkaus +150 volts DC tso zis. Txhawm rau ua qhov no, koj yuav tsum siv lub voj voog txuas txuas rau diodes. Diodes D226 tuaj yeem siv rau hauv kev tsim cov khoom siv hluav taws xob. Yog tias koj xav tau kom muaj kev ntseeg siab, ces siv D219 (lawv muaj qhov ua haujlwm siab tshaj plaws ntawm 10 amperes). Yog tias koj ua lub raj xa hluav taws xob nrog koj tus kheej tes, ua raws li cov cai kev nyab xeeb.
Diode sib dhos ua haujlwm zoo hauv cov khoom siv hluav taws xob. Nws tsuas yog tsim nyog xaiv cov uas muaj peev xwm ua haujlwm ib txwm nyob ntawm qhov hluav taws xob txog li 300 volts. Them tshwj xeeb rau kev lim cov zis DC voltage - nruab 3-4 electrolytic capacitors txuas nyob rau hauv parallel. Lub peev xwm ntawm txhua qhov yuav tsum yog tsawg kawg yog 50 microfarads, cov khoom siv hluav taws xob yuav tsum siab dua 300 V.
Vamp pre-amp circuit
Yog li, tam sim no ze rau lub tswv yim nws tus kheej. Yog tias koj tab tom ua ib lub raj guitar amplifier nrog koj tus kheej tes, los yog ua si suab paj nruag, koj yuav tsum nkag siab tias qhov tseem ceeb tshaj plaws yog kev nyab xeeb thiab kev ntseeg siab. Feem ntau cov circuits muaj ib lossis ob theem ua ntej amplifier thiab ib lub amplifier zaum kawg. Preliminaries yog tsim los ntawm triodes. Txij li thaum muajcov raj uas muaj ob lub triodes hauv tib lub hauv paus, koj tuaj yeem txuag tau qee qhov chaw thaum txhim kho.
Thiab tam sim no hais txog dab tsi cov ntsiab lus muaj lub raj amplifiers. Nrog koj tus kheej txhais tes koj yuav tau sib sau ua ke txhua yam rau hauv ib qho qauv. Rau lub teeb nyob rau hauv lub preamplifier, nws yog qhov zoo tshaj plaws los siv 6N2P, 6N23P, 6N1P. Ntxiv mus, txawm lub fact tias tag nrho cov teeb no yog analogues rau ib leeg, 6N23P suab ntau qab ntxiag. Lub teeb no tuaj yeem pom hauv PTK thaiv (xov tooj cua hloov pauv) ntawm cov qub dub thiab dawb TVs xws li Cov Ntaub Ntawv, Vesna-308, thiab lwm yam.
kawg amplifier theem
Raws li lub teeb tso zis, 6P14P, 6P3S, G-807 feem ntau yog siv. Tsis tas li ntawd, thawj zaug yuav yog qhov tsawg tshaj plaws, tab sis qhov kawg ob yog qhov zoo nkauj heev. Thiab rau G-807, lub anode yog kiag li nyob rau hauv lub Upper ib feem ntawm lub tog raj kheej. Thov nco ntsoov tias nyob rau hauv lub raj ULFs, nws yog ib qho tseem ceeb uas yuav tsum tau siv ib tug transformer mus cuag acoustics. Yog tias tsis muaj qhov sib xws li transformer, koj tsis tuaj yeem ua lub raj xa hluav taws xob nrog koj tus kheej tes.
Kev ua haujlwm zoo heev raws li cov khoom siv hluav taws xob tso tawm TVK siv hauv kev ntsuas ntsug. Nws thawj winding yog kev cob cog rua ntawm lub plus ntawm lub hwj chim mov thiab lub anode ntawm lub tso zis teeb. Ib tug capacitor yog txuas nyob rau hauv parallel mus rau windings. Thiab nws tseem ceeb heev uas yuav tau xaiv qhov yog! Ua ntej, nws yuav tsum yog daim ntawv (xws li MBM). Qhov thib ob, nws qhov peev xwm yuav tsum yog tsawg kawg 3300 pF. Tsis txhob siv electrolytic lossis ceramic.
Kev kho thiab lub suab tso suab
Ua lub suab tso suab yuav yooj yim heev. Nws yog txaus los ua ob lub amplifier zoo tib yam. Koj tuaj yeem nrhiav tau lub tso suab raj amplifier hauv qub Soviet technology. Koj tuaj yeem rov ua qhov tsim nrog koj tus kheej tes. Tab sis koj yuav tsum coj mus rau hauv tus account qee qhov nta:
- Lub ntim tswj tau txuas ncaj qha mus rau cov tswv yim ntawm lub tshuab hluav taws xob. Qhov sib txawv ntawm cov resistor uas siv rau nws yuav tsum tau xaiv xws li tias muaj ob lub ntsiab lus ntawm lub axis hauv ib lub tsev. Hauv lwm lo lus, yog li ntawd thaum lub pob qhov rooj tig, qhov tsis kam ntawm ob lub resistors hloov ib zaug.
- Cov kev xav tau zoo sib xws rau tus tswj hwm zaus. Nws muaj nyob rau hauv lub anode Circuit Court ntawm thawj triode ntawm lub preamplifier.
Amplifier vaj tse
Yog tias koj ua lub raj guitar amplifier nrog koj tus kheej tes, ces siv lub rooj plaub hlau ua rau kev nkag siab. Nws yuav tsis ntshai ntawm cov tshuab thiab lwm yam me me shocks. Tab sis yog tias koj tab tom ua ib qho amplifier rau siv hauv tsev, piv txwv li, rau kev txuas mus rau ib tug neeg uas ua ntawv, lub computer, ces nws yog wiser siv rooj plaub ntoo. Tab sis koj yuav tsum coj mus rau hauv tus account tias nws yog ntshaw kom muab lub hwj chim transformer rau rooj plaub siv roj hmab gaskets. Lawv txo kev vibrations.
Ntau yam nyob ntawm seb lub raj xa hluav taws xob yuav ua li cas. Nrog lawv tus kheej txhais tes, ntau craftsmen ua rooj plaub los ntawm daim ntawv txhuas. Yog tias txawm tias me me vibrations cuam tshuam lub teeb, nws daim phiaj yuav pib oscillate. Thiab cov kev hloov pauv no yuav pib hnyav zuj zus, thiab qhov tshwm sim yog qhov nrov ntawm cov neeg hais lus. Koj kuj yuav tsum tau ua ib lub tsheb npav, uas yuav tsum dhau los ze rau txhua lub teeb nrog rau hauvkev tsim kho. Txhua cov xov hlau uas nqa lub teeb liab yuav tsum tau tiv thaiv kom ntau li ntau tau - qhov no yuav tso cai rau koj tshem tawm ntau yam kev cuam tshuam.
Circuits nrog transistors
Thiab lwm qhov nthuav dav tsim yog tube-transistor amplifiers. Koj tuaj yeem ua cov no nrog koj tus kheej txhais tes thaum yav tsaus ntuj. Tab sis cov teeb pom kev zoo, raws li txoj cai, yog tsim los ntawm kev teeb tsa dai. Nws hloov tawm los ua qhov yooj yim tshaj plaws thiab yooj yim. Thiab yog tias siv cov transistors, cov ntawv luam tawm yuav tsum tau siv. Tsis tas li ntawd, qhov hluav taws xob ntawm 9 lossis 12 volts yuav tsum tau ua kom lub zog ntawm cov theem transistor. Ntxiv mus, transistors tsuas yog siv los tsim kom tau ib qho kev nthuav dav ua ntej. Hauv lwm lo lus, koj yuav tsuas muaj ib lub raj sab laug - nyob rau hauv cov zis theem (los yog ob, yog tias peb tham txog lub tso suab version).
