Blog

January 8, 2017

Amathiphu angama-22 okuthola umsindo ongcono kuhlelo oluphezulu lomsindo - INGXENYE II

Voltage High resistors
ngu-Inthanethi Archive Book Izithombe

Amathiphu angama-22 okuthola umsindo ongcono kuhlelo oluphezulu lomsindo - INGXENYE II

9. Ukwenza isisekelo sezinsimbi zikaStatic Electricity; ikakhulukazi esimweni sezulu esimanzi nasezindaweni zokulalela ezigcwele ukhaphethi ngokuphelele, ugesi omile uba yinkinga. Ukhaphethi ukhokhiswa ngogesi ongaguquguquki ongadluliselwa kuzinto zombane nge-rack kanye / noma ngokuthinta komuntu. Ugesi omile kukhaphethi unamandla kangangokuba uma uhlolwe ekuseni ngaphambi kokuba othile ahambe kuwo, ungabonakala kahle ngamathuluzi alula athengiswa kuRadio Shack

Ukuze kuqedwe lo mphumela, izipikha zimile nezindawo zokubeka izinsimbi kufanele zixhunywe emhlabeni ngocingo oluncane. Ngaphezu kwalokho, izintambo zesikhulisazwi kanye nokuxhuma kufanele kususwe phansi ngenxa yomphumela ofanayo.

Yiziphi izinzuzo ongazilindela kule tweak angazi ukuthi kungani kodwa ukufiphala okuncane namanzi amaningi aphansi.

10. Ibanga lesikhulisazwi kude nodonga lwangaphambili; Abakhiqizi besikhulisazwi ngokuvamile batusa ibanga lesipika ngodonga lwangaphambili (udonga ngemuva kwezipikha). Ngokuvamile, isikhulumi kufanele sitholakale kude ngangokunokwenzeka nodonga lwangaphambili. (Izindonga eziseceleni) Uma zisondele kakhulu odongeni, amagagasi amile ama-bass azoqiniswa (kuchazwe ku-athikili yesihlanu) futhi ibhande le-mid / treble lizocindezelwa ngenxa yamandla amaningi we-bass.

Amanye ama-audiophiles athola ivolumu yebass oyifunayo ngokuwabeka eduze kodonga lwangaphambili olungalungile. Into eyodwa okufanele ibhekwe ukuthi ukukhuphuka kwamabhasi okunjalo akubanga ngenxa yomsindo woqobo kepha kungumphumela wempendulo yegumbi ebizwa nge-coloration.

11. I-Auto yangaphambili / iTransformer Passive Line Stage; Ubuchwepheshe obusha obuthuthukisiwe embonini yama-hi-end benza ama-pre-amplifiers angabazeka.

Ngaphambi kokuphela, isizathu se-preamplifier sichazwe ngezisekelo ezine;

a- Ukuxhuma ngaphezulu iyunithi elilodwa ndawonye
b- Ukuqopha itheyiphu kweminye imithombo
c- Ukukhishwa kwevolumu ephansi kanye nesignali ye-polarity eguquliwe yama-turntable (njengokuwukuphela komthombo womthombo)
d- Bass, izidingo zokulungiswa kwe-treble

Kulezi zinsuku, ama-CD, amayunithi we-SACD anganikeza okuphumayo okungu-5-8 Volts okungaphezulu kokwanele izikhulisi zamandla. Ama-audiophiles awasenantshisekelo ekulungisweni kwethoni kepha asagxila ekulula. Izigaba ze-phono ezinikezelwe zisetshenziswa ngokujwayelekile, ngakho-ke, iningi lezidingo alisasebenzi.

Umsebenzi omkhulu futhi okuwukuphela kwawo wesisekelo se-pre-amplifier yesimanje ukwehlisa izinga levolumu, hhayi ukuyinyusa !!
Vele uzame ukucabanga ngesiginali emsulwa evela kwi-CD, noma i-DAC ngesikhulisi samandla, bese usika lesi sixhumanisi, engeza ama-plugs amane, ama-plugs amane abesifazane, ama-interconnects, ama-resistor amaningi, ama-capacitors, amashubhu, ama-transistor nakho konke okukulo isixhumanisi. Ungakugcina kanjani ukuhlanzeka kwesiginali futhi ungenza okuthile okungcono kunokwasekuqaleni!

Isiteji somugqa osebenzayo sidiliza ukungathathi hlangothi nokuhlanzeka komsindo woqobo. Inkohlakalo enjalo kungenzeka ingabonakali kangako ezinhlelweni eziningi zokuxazulula okuphansi noma inganakwa ngabantu abathile ngenhloso. Zonke izigaba zomugqa ezisebenzayo zinobuningi bazo nombala. Empeleni, ama-audiophiles ngokuvamile asebenzisa izigaba zomugqa ukulinganisela izinkinga zabo zobuningi ezinhlelweni. Isibonelo, kusetshenziswa isigaba somugqa webhubhu ukwehlisa umsindo okhulisa amandla oqinile noma isiteji somugqa ocebile osetshenziswayo ukunxephezela isikhulisi samandla esintekenteke futhi okuphambene nalokho. Uma lokhu kunjalo ohlelweni, isigaba somugqa wemvelo ngokuphelele kanye nokushoda kombala ngeke kuthathwe yi-audiophile.

Ukungilandela, ukucabanga kufanele kube ukuguqula isikhulisi samandla kuze kube yilapho uthola umsindo owuthandayo kunokuba udlale nge-pre-amplifier. Ngamanye amagama, ukubhekana nenkinga yasekuqaleni kunalokho bese uzama ukufihla inkinga.

Kucishe kube ngukuvumelana ukuthi ukusebenzisa imbiza yevolumu elula kakhulu kunezela ukungathathi hlangothi okukhulu nobumsulwa kuzwakale. Kepha ezimweni ezinjalo, kuvela ezinye izinkinga. Ibhodwe levolumu okungahle libe yi-potentiometer noma i-alternator anyathelwe isebenza nezinhloko zokumelana. Zonke izinyathelo zevolumu zengeza indlela ehlukile yokuphikisana nesiginali, ngaleyo ndlela yehlisa ivolumu. Ngenxa yobunzima besiginali yomculo (20 Hz-20 kHz), umthwalo onjalo wokumelana uzosebenza njengesithiyo samaza ahlukahlukene. Isibonelo lapho wehlisa izinga levolumu, i-treble yehlisiwe futhi ama-bass anciphise noma uma unyusa ivolumu, ama-mids ngokweqile noma okuphambene nalokho. Okungafanele ukhohlwe ukusho ukungabi khona kobubanzi obushukumisayo futhi. Isigaba somugqa siqeda lezi zinkinga.
Ngenxa yalawa maqiniso, izimbiza zokulawula ivolumu noma ama-CD alawulwa ngevolumu ye-analog azikwazi ukusetshenziswa zizimele njengezigaba zomugqa

Ngobuchwepheshe obusha, izigaba ezintsha zomugqa wangaphambilini nezinguquko zenzelwe ukulawula ivolumu.

Amayunithi anjalo awasebenzi nezikhulu zokumelana futhi awafaki ukumelana nendlela yesiginali. Ukumelana kuphela kwama-amps anjalo cishe kungama-200 Ohms ngenxa yekhebuli e-windings.

Izigaba zomugqa wenguqu eziguquguqukayo ziqukethe ama-transformer amabili, eyodwa yesiteshi sangakwesokunxele, nesinye kwesokudla. Zinokugoba okukodwa okuyisisekelo kanye nezinyathelo eziningi (eziyi-12-24 zezinyathelo) zewindings yesibili. Uthishanhloko wabo ukuthanda ivolumu ngokushintsha ama-volts, kunalokho engeza ukumelana. Ngokwazi kwami, kunabakhiqizi abathathu kuphela balezi zigaba zomugqa. Ngisebenzise ezimbili zazo. Zombili zihlinzeka ngemisindo eyejwayelekile eyejwayelekile, ezolile nengaphazamiseki.

Ngiguqule kakhulu i-Antique Sound Lab uqobo lwami oluwumkhiqizo omuhle kakhulu futhi oshibhile futhi, (ungalibukeli phansi inani layo) kepha i-Audio Rock Consulting's Silver Rock eyenziwe ngesiliva elimsulwa enye into.

Kufanele futhi kushiwo ukuthi izigaba ezinjalo zokwenziwa azikwazi ukufanelekela zonke izinhlelo. Esimweni esinjalo, impedance yokufaka yamandla amp kufanele iqhutshwe ngqo isigaba sokukhipha se-DAC noma isidlali seCD. Ukufakwa kwe-impedance ye-amp amp kufanele kube kuncane ngangokunokwenzeka. Indlela enhle yokufunda leli cala ukubhala amanani we-impedance kumkhiqizi bese ucela usizo ngaphambi kokuthenga.

12. Amashubhu Amahle (Amashubhu we-NOS); kunengqondo ukukhokha i-100? kuya nakubhubhu omdala ngenkathi entsha ibiza i-10? Ngikholwa ukuthi kunjalo. Ishubhu enhle ingashintsha izici zethubhu elekthronikhi sengathi ushintshe yonke iyunithi. Amashubhu ama-Nos akulula ukuwathola, abiza kakhulu kepha kufanelekile ukuwasebenzisa. Ikakhulukazi imvamisa engenhla yehssi iphansi impela ngamashubhu amaNos.

13. Indlela Elula Kakhulu Yokuthola Ubumbano; Ngokuvamile, ama-plugs we-AC ajwayelekile aseYurophu (aseJalimane) awanasiqondisi sesiginali. Ama-plugs ase-US, e-UK, eSwitzerland anendlela eyodwa yokuxhuma ku-AC, ngakho-ke - nezigaba azikwazi. Ngakho-ke ezimweni ezinjalo, akulula ukuthola ubumbano obufanele.

Izinto ze-elekthronikhi zingasebenza kahle kungakhathalekile ukuthi ubumbano kangakanani. Omabonakude bethu, iziqandisi, ama-bulb, amakhompyutha konke. Kungani i-AC polarity ibaluleke kakhulu ku-Hi-Fi!

Ugesi ufika usuka ku- (+) udlula isekethe le-elekthronikhi bese usuka usuka (-) Ngokuvamile ama-mains current afika ekunikezelweni kwamandla kweyunithi kuqala bese yehliselwa kumandla kagesi afiswayo ngamasekethe kagesi. Kulokhu, ama-mains ahlungwa ngokuzenzakalela yisigaba sokuphakelwa kwamandla. Isiguquli sesigaba sokunikezwa kwamandla siziphatha njengesihlukanisi sodwa, imisinga yokufaka kanye neyokukhipha ihlukaniswe ngokomzimba. Uma i-polarity ingalungile, ama-mains azofika ohlelweni ngqo ukusuka emnyango wangemuva futhi azothwala konke ukungcola okufana ne-RFI / EMI kuyise kuyunithi. Ngenxa yeqiniso, kubalulekile ukuthola ubumbano obufanele.

Iningi le-elektroniki 'polarity liyafana. Uma iyunithi inentambo kagesi ekhiphekayo nohlobo lokufaka lwe-IEC, imbobo yangakwesokudla kufanele kube (+) ama-maini uma ubheka ipulaki ngaphambili kobuso bangaphambili (njengoba kuboniswe ngezansi)

Enye indlela elula ukubheka amafuses amakhulu. Uma iyunithi linentambo yokuvikela yangaphandle, dedela i-fuse bese uyihlola ngepeni lokuhlola ugesi ngenkathi iyunithi ixhunywe kuma-mains. Kufanele kube yisiginali (+). Uma kungenjalo, buyisela emuva ipulagi ye-AC odongeni

14. Izinga Lokulalela Lamavolumu; Kuyibhizinisi elingenamuntu ukuthi likutshele lokho okuyilungiselelo elilungile levolumu yokulalela. Amanye ama-audiophiles afana nezinga lokulalela eliphansi kakhulu, amanye akhanyisa ivolumu kuze kuphuke amawindi.

Uma umphumela ukufeza ukuzungeza kwendawo eqoshiwe, izinga levolumu kufanele lilungiswe ngokufanele kepha hhayi ngaphezulu noma hhayi ngaphansi. Leli cala lisebenza kuzinsimbi zomculo kuphela kodwa hhayi kumculo we-elektroniki, i-jazz noma i-disco njll.

Noma ngabe yini irekhodi elalelwayo, ukusethwa kwevolumu efanele kufanele kube yilokho okungakhulisi noma kunciphise ithuluzi lokuqala. Amanani aphezulu kungenzeka Isibonelo, isigingci kufanele sidlalwe nomthamo wokuqala wesigingci ngokubeka ivolumu efanele. Uma izinga levolumu lenyuswa, umzimba wesigingci uzokhula ngokwamagama angabe usasebenza, ngakolunye uhlangothi, umzimba ogcwele wekhorasi kaMormoni ngeke ube ngokoqobo ngamanani aphansi

15. Ukufudumeza Izipikha Nezintambo Ngaphambi Kokulalela Okubucayi; Ngaphandle kombono wokuthi "i-Solid state electronics inikeza umsindo wayo omuhle imizuzu embalwa kuze kube yilapho ama-transistor efudumele." yonke imishini eyodwa yomsindo idinga isikhathi sokufudumala. Lesi sikhathi okungenani ihora elingu-1/2 noma ihora elilodwa yize abakhiqizi bancoma okuncane. Ngokwazi kwami, isizathu salokhu ukucaciswa kwama-resistors, ama-capacitors, amashubhu nezinye izinto kuyahluka uma kubanda noma kufudumele. Abakhi benza amasethingi wokugcina lapho amayunithi afudumele, ngaphandle kwalokho bezizodlala kahle isigamu sehora bese kuba kubi ngemuva kokufudumala.

Lowo thishanhloko usetshenziswa yi-audiophile ngayinye ye-elekthronikhi kepha hhayi ngaso sonke isikhathi kuzipika nezintambo.
Izipikha zibaluleke impela ngoba izingxenye zazo ezingenzi lutho kufanele zifudunyezwe njengeziphikisi ze-crossover. Amakhoyili abo ezwi kufanele afudunyezwe futhi. Izintambo nazo zibalulekile. Isikhathi sokufudumala singahle singalungele izintambo kepha izintambo kufanele zisebenze isikhashana kuze kukhokhiswe ama-dielectric awo.

Ngenxa yalokho, isikhathi sokufudumeza kufanele sigcwaliswe ngokudlala (kungahle kungalaleli) lonke uhlelo.

16. Ukukhethwa kwesipikha esifanele seGumbi Lokulalela; Isikhulisazwi kufanele kukhethwe ngokuhlangana nobukhulu begumbi lokulalela. Ngeshwa ukuthambekela okujwayelekile kuma-audiophiles ikakhulukazi e-US "kukhulu kungcono"

Kufana nabashushuluzi abasha abasha abakhetha okokusebenza okushushuluza okungcono kakhulu ngaphambi kokufunda nokubhekana nezinkinga eziningi ngemuva kwalokho.

Izipikha ezinkulu kunzima ukuzibeka, kunzima ukuzishayela, zithinteke kakhulu kusuka emingceleni yegumbi. Uma isipikha sikhulu egumbini, amandla we-bass ngokweqile azonciphisa imisindo esele. Isikhulumi esikhulu sisho izinkinga ezinkulu. Ukushayela izipikha ezinkulu kudinga inselelo, isipiliyoni, imithombo, isikhathi nemali.

Voltage High resistors , , , , , , ,