DIY Kuvaka yako wega mahedhifoni amplifier. Dhizaini, transformer, chokes, mahwendefa.

Ona mahedhifoni amplifiers muMuzyczny.pl

Ichi chikamu chekoramu kuenderera mberi kwechikamu chakapfuura, icho chaive rudzi rwekusuma kune nyika yemagetsi, umo takatora nyaya yekuvaka headphone amplifier pachedu. Mune izvi, zvakadaro, isu tichaswedera kune iyo musoro zvakadzama uye tokurukura chinhu chakakosha chemusoro wedu amplifier, inova magetsi. Kune chokwadi mashoma sarudzo dzekusarudza kubva, asi isu tichakurukura dhizaini yechinyakare mutsara wemagetsi magetsi.

Musoro wemagetsi ekugadzira dhizaini

Mune yedu kesi, iyo magetsi eiyo mahedhifoni amplifier haizove inoshandura. Iwe unogona ne theoretically kuvaka imwe kana kushandisa yakagadzirira-yakagadzirwa, asi kune yedu imba purojekiti isu tinogona kusarudza kushandisa yechinyakare magetsi emagetsi zvichienderana nekurova uye mutsara stabilizers. Mhando iyi yemagetsi iri nyore kugadzira, transformer haizodhure nekuti haidi simba rakawandisa rekushanda kwakaringana. Kunze kwezvo, hapazove nematambudziko nekukanganisa uye matambudziko anoitika nevashanduri. Simba rakadaro rinogona kuiswa nyore nyore pabhodhi rimwechete seyose system kana kunze kwebhodhi asi mukati meimba imwechete. Pano, munhu wese anofanira kuzvisarudzira kuti ndeipi sarudzo inomukodzera zvakanyanya.

Tichifunga kuti isu tinotarisa pakuvaka yakanaka mhando amplifier, magetsi ayo haagone kuvakwa asina kusimba. Zvichienderana nezvakatsanangurwa zveIC, magetsi edunhu redu guru anofanira kunge ari pakati pezvakatarwa. Mhepo inonyanyozivikanwa yemhando iyi yemidziyo ndeye + -5V uye + - 15V. Nemhando iyi, ini ndinokurudzira kuti uise iyi parameter zvakanyanya kana zvishoma uye isa iyo magetsi, semuenzaniso, kusvika ku10 kana 12V, kuitira kuti kune rumwe rutivi tive nekuwedzera chengetedzo, uye kune rumwe rutivi, isu hatiremerwe. hurongwa nekushandisa zvakanyanya simba. Iyo voltage inofanirwa kuve yakagadzikana uye nekuda kweizvi iwe unofanirwa kushandisa stabilizer kune yakanaka voltage uye yakaipa voltage, zvichiteerana. Mukuvakwa kwesimba rakadaro, tinogona kushandisa, semuenzaniso: SMD zvinhu kana kuburikidza-gomba zvinhu. Tinogona kushandisa zvimwe zvinhu, semuenzaniso kuburikidza-gomba capacitor, uye eg SMD stabilizers. Pano, sarudzo ndeyako uye zvinhu zviripo.

Transformer sarudzo

Icho chinhu chakakosha icho chinhu chakakosha chekushanda kwakanaka kwesimba redu rekupa. Chokutanga pane zvose, tinoda kutsanangura simba rayo, iro risingafaniri kunge rakakura kuti riwane maitiro akanaka. Isu tinongoda mashoma watts, uye iyo yakakwana kukosha ndeye 15W. Kune akati wandei marudzi etransformer pamusika. Iwe unogona kushandisa, semuenzaniso, toroidal transformer yepurojekiti yedu. Inofanirwa kunge iine zvombo zviviri zvechipiri uye basa rayo richave rekugadzira symmetrical voltage. Sezvineiwo, taizowana anenge 2 x 14W kusvika 16W alternating voltage. Rangarira kusapfuudza simba iri rakawandisa, nekuti voltage inozowedzera mushure mekutsvedzerera nema capacitors.

Tile kugadzira

Nguva dzekuti maelectronics kumba etch ma plates ega apera. Nhasi, nekuda kweichi chinangwa, tichashandisa akajairwa maraibhurari ekugadzira mataira, ayo anowanikwa pawebhu.

Kushandiswa kwemazino

Pamusoro pezvakajairwa zvinodikanwa zvemagetsi edu emagetsi, zvakakosha kushandisa chokes pamagetsi emagetsi, ayo pamwe chete nema capacitors anoumba yakaderera-pass mafirita. Nekuda kwemhinduro iyi, tichadzivirirwa kubva mukupinzwa kwekunze kwekukanganiswa kubva pamagetsi emagetsi, semuenzaniso kana imwe mudziyo wemagetsi uri pedyo unobatidza kana kudzima.

Summation

Sezvatinoona, magetsi emagetsi chinhu chiri nyore-ku-kuvaka chinhu cheamplifier yedu, asi yakakosha. Ehe, unogona kushandisa dcdc converter pachinzvimbo chemagetsi emagetsi, anoshandura voltage imwe kuita symmetrical voltage. Iyi inzira inofanirwa kutariswa kana isu tichinyatsoda kudzikisa iyo PCB yeakavakirwa amplifier yedu. Nekudaro, mukuona kwangu, kana isu tichida kuve nemhando yepamusoro inogoneka yeruzha rwakagadziridzwa, iyo inonyanya kubatsira mhinduro ndeyekushandisa yakadaro yechinyakare mutsara magetsi.