Lub mloog pob ntseg amplifier nrog koj ob txhais tes nyob rau hauv 15 feeb

Txhua pib wireless txhawb tom qab thawj zaug muaj kev vam meej thwmsim, koj cov tsos ntawm nws yeej, nws xav mus sim ua ib yam dab tsi tam sim no. Tsis yog ib tug qho khoom ua si, tab sis yeej ua hauj lwm tag nrho tshaj plaws. Ua li no, haum txig qhob yooj yim lub mloog pob ntseg amplifier, uas yog keej txhais tes yuav tuaj txoos ua ke nyob rau hauv cia li ib tug ob peb feeb.

Kuv yuav thov li cas? Ua ntej, rau nws npaj lub hom phiaj, uas yog, kom nrov loj lub teeb liab los ntawm lub suab nrov los yog preamplifier, uas yog qhov chaw uas cov lub teeb liab yog ib yam nkaus thiab tsis muaj zog, thiab nws yog tsis yooj yim sua mus cuag headphones. Nyob rau hauv cov ntaub ntawv no, koj yuav ua tau ib tug lub mloog pob ntseg amplifier nrog koj ob txhais tes.

Secondly, nws yog pab tau raws li ib tug ntxiv lub cuab tam. Portable lub mloog pob ntseg amplifier yog heev muaj feem xyuam rau kev soj ntsuam circuits. Vim hais tias feem ntau muaj yog ib tug yuav tsum tau nrhiav ib qhov chaw mus ua txhaum tshiab circuitry uas koj tau sau, tab sis nws tsis xav mus ua hauj lwm. Piv txwv li, koj tau ua ib yam lub mloog pob ntseg amplifier nrog koj ob txhais tes. Nws yuav pab nyob rau hauv cov kev tshawb fawb rau ua tus txhaum. Nrog nws, koj muaj peev xwm heev sai sai nrhiav tau tus taw tes uas lub teeb liab disappears. Nws yog feem ntau qhov no tshwm sim vim hais tias ntawm ib tug trifle: phem heev soldered ib feem, faulty capacitor, etc. Dig muag, los yog nrog ib tug tester qhov ua yuav ua tau yooj yim mus nrhiav tau.

Ua ib tug lub mloog pob ntseg amplifier nrog koj ob txhais tes xwb vim hais tias mono Circuit Court muaj tsuas yog tsib lub Cheebtsam. Nws yog raws li nyob rau hauv lub nti TDA7050, uas raug tus nqi 30-80 rubles. Tab sis kuv xav hais tias nyob rau hauv koj holdings hluav taws xob lub Cheebtsam, uas yog ib txwm muaj los ntawm tej siab cov ntaub ntawv no, muaj tshwm sim xws li ib tug nti. Nws yog feem ntau siv nyob rau hauv daig kab players thiab lwm yam suab me nyuam pab kiag li lawm yooj yim.

Nyob rau tib lub nti yuav tau ua thiab ib lub tso suab lub mloog pob ntseg amplifier nrog koj ob txhais tes. Nws yuav muaj mus ntxiv ob ncov qaumteb qabteb capacitor rau cov qhov tso zis (yuav ua tau ib tug uas), thiab lub tswv yim ntim tswj yuav tsum ua los ntawm ib tug dual nce mus nce los resistor.

Sheer nti yog ib tug hwj chim amplifier nyob rau hauv ib tug txheej txheem me me tsev nyob (DIP8). Ua hauj lwm voltage ntawm 1.6 mus rau 6 lub volts. Nws kov ib tug ntau ntawm lub zog. tso zis ntau zog nyob rau hauv lub mov voltage. Nyob rau hauv lub embodiment tso suab nyob rau hauv load ntawm 32 ohms thiab ib tug voltage ntawm peb volts rau cov qhov tso zis koj tau txais txog 130 milliwatts ib channel. Thaum kev cob cog rua nyob rau hauv ib tug choj Circuit Court nyob rau hauv lub embodiment ntawm mono muaj peev xwm yog ob npaug. Tso zis Circuit Court yog kev tiv thaiv tiv thaiv luv luv Circuit Court.

Schematic daim duab muab nyob rau hauv Daim duab 1. Lub tswv yim teeb liab yog thov mus terminals 1 thiab 3 thiab headphones 32 ohms yog kev cob cog rua rau terminals 7 thiab 8. Raws li cov specifications nyob rau hauv lub bridged hom, lub load yuav tsum tsis txhob yuav tsawg tshaj li 32 ohms. Yuav kom smooth lub voltage mov yog kev cob cog rua rau lub tsheb npav capacitors C1 thiab C2, 100, thiab 0.1 microfarads, ntsig txog. Resistor R1 - 22 ohms. Zoo, tej zaum, thiab tag nrho cov hauj lwm ntawm peb thawj qauv.

Qhov thib ob tswvyim ntawm daim duab 3 yog feem ntau siv nyob rau hauv me me-sized pab kiag li lawm prefabrication. Kom nws me ntsis nyuaj. Lub tswvyim qhia tau hais tias tag nrho cov tsim nyog paub meej. Daim duab 2 - tib yam tswvyim mus cuag tus tham. Raws li koj tau pom, qhov txawv yog me me. Lub Circuit Court rau tus tham ncov qaumteb qabteb capacitors yog siv nyob rau hauv txhua zis channel, thiab lub mloog pob ntseg - sawv ntau capacitor ntawm kev twb kev txuas taw tes rau hauv Circuit Court vaj tse rau lawv.