Momwe mungayang'anire kutulutsa kwa amplifier ndi multimeter
Zamkatimu
Zokulitsa zamagalimoto zimathandizira kukulitsa luso lanu lomvera, makamaka ikafika panyimbo zagalimoto yanu kapena makina a stereo akunyumba.
Kupyolera mukugwiritsa ntchito ma transistors, amakulitsa chizindikiro cha mawu kuchokera kuzinthu zolowetsamo, kotero amapangidwanso bwino pa oyankhula akuluakulu.
Inde, pamene pali vuto ndi amplifier, makina omvera a galimoto amavutika.
Njira imodzi yodziwira matenda ndikuwunika ngati amplifier ikupanga zotulutsa zoyenera, koma si aliyense amene akudziwa momwe angachitire izi.
Mu bukhuli, muphunzira momwe mungayesere kutulutsa kwa amplifier ndi multimeter.
Tiyeni tiyambe.
Kuyang'ana Kochokera
Chinthu choyamba chimene mukufuna kuchita ndikuonetsetsa kuti chizindikiro choyenera kapena mphamvu zimachokera kuzinthu zolowetsamo.
Amplifier imayendetsedwa ndi mawaya awiri ochokera kumadera ena agalimoto.
Izi zikuphatikiza mawaya amodzi omwe amachokera ku batire ya 12V ndi waya wina wochokera pansi pa chassis chagalimoto.
Ngati kuchuluka kwa mphamvu sikukuperekedwa, mungayembekezere kuti amplifier ikuchita bwino.
- Pezani amplifier yanu ndi gwero lamagetsi
Amplifier nthawi zambiri imakhala pansi pa dashboard, mu thunthu la galimoto, kapena kumbuyo kwa mipando yamagalimoto.
Mupezanso chingwe chomwe chikudyetsa amplifier. Mutha kuloza buku la eni ake lagalimoto yanu kapena amplifier.
- Yatsani kuyatsa kwagalimoto
Muyenera waya kuti ikhale yotentha kuti muthe kuwerenga. Yatsani kuyatsa kwagalimoto kuti muyambe osayatsa injini. Ndi zokwanira.
- Tengani kuwerenga kuchokera ku mawaya olowetsa
Khazikitsani ma multimeter kukhala ma voliyumu a DC ndikuyika zowongolera pamawaya olowera.
Ikani chiwongolero chofiira (chabwino) pamawaya abwino ndikuyika chiwongolero chakuda chakuda (choyipa) cha multimeter pawaya wapansi.
Mphamvu yabwino imakupatsirani kuwerenga pakati pa 11V ndi 14V.
Kuyesa kwamphamvu
Kuyesa kwina komwe mungachite kungakupatseni zambiri za PSU yanu.
Pomwe ma multimeter amatsogolera akadali olumikizidwa ndi mawaya olowera, onjezerani voliyumu mgalimoto.
Ngati simukuwonjezera kuwerengera kwamagetsi, ndiye kuti pali vuto ndi gwero lolowera ndipo mukufunsanso zambiri za izi.
Fuse test
Vuto limodzi lokhala ndi magetsi oyipa amplifier litha kukhala fuse yowonongeka ya amplifier.
Kuti muyese izi, mumangopeza fuse yamagetsi ya amplifier yanu, ikani ma multimeter anu kuti asakane, ndikuyika zowongolera kumapeto onse a fuseyo.
Ngati amplifier ikuwonetsa mtengo woipa, fusesiyo ndi yoipa ndipo iyenera kusinthidwa.
Mutha kuwonanso kalozera wathu wowonera fuse popanda multimeter.
Kuphatikiza apo, ma amplifiers ena ali ndi njira yotetezeka.
Ngati yanu ili ndi ntchitoyi ndipo imalowa mumayendedwe otetezeka mukayatsa, ndiye kuti magetsi ndi olakwika.
Nkhani imodzi yomwe njira yotetezeka ingayambitsidwe ndi ngati amplifier imayikidwa kapena kukhudza malo oyendetsa.
Momwe mungayang'anire kutulutsa kwa amplifier ndi multimeter
Ikani CD pa 50 Hz kapena 1 kHz pa 0 dB m'bokosi loyambira, ikani ma multimeter kukhala AC voltage pakati pa 10 ndi 100 VAC, ndikuyika zotsogola za multimeter pazotulutsa za amplifier. Amplifier yabwino imayembekezeredwa kuti ipereke kuwerengera kwamagetsi komwe kumafanana ndi mphamvu yotulutsidwa bwino.
Tifotokozanso zina.
- Letsani okamba
Gawo loyamba ndikudula mawaya oyankhula kuchokera ku ma terminals a amplifier.
Awa ndi ma terminals omwe mukufuna kuyesa, chifukwa chake kuchotsa mawaya oyankhula ndikofunikira.
Kuphatikiza apo, mukufunanso kuzimitsa kapena kuletsa ma crossovers aliwonse amagetsi olumikizidwa ndi ma terminals a amplifier.
Izi zimachitidwa kuti pasakhale zosokoneza ndi mayesero.
- Khazikitsani ma multimeter kukhala magetsi a AC
Ngakhale amplifier yamagalimoto imayendetsedwa ndi magetsi a DC, amplifier imatembenuza ma voltage otsika / otsika kukhala owerengera apamwamba.
Zimasinthasintha, kotero mumayika ma multimeter anu kukhala AC voltage kuti muyese zomwe zatuluka. Mphamvu ya AC nthawi zambiri imatchedwa "VAC" pa multimeter.
Mutha kuyiyikanso mumitundu ya 10-100VAC kuti muwonetsetse kuti ma multimeter akupereka zotsatira zolondola.
- Ikani ma multimeter otsogolera pazigawo zotulutsa za amplifier
Masitepe awiri am'mbuyomu akamalizidwa, mumangoyika zotsogola za multimeter pazotulutsa za amplifier.
Izi ndi zotulukapo zomwe mudadulako mawaya a sipika.
Ikani chiwongolero chabwino pachotulutsa chabwino cha amplifier ndi chowongolera choyipa pachotulutsa choyipa.
Ngati amplifier yatsekedwa kapena ikugwira ntchito mu mono, ingolumikizani zabwino ndi zoipa zomwe zimatsogolera ku shunt linanena bungwe.
- Ikani pafupipafupi mayeso
Njira yosavuta yogwiritsira ntchito mafupipafupi kuyesa zizindikiro zotuluka ndikuyimba nyimbo yoyesera.
Mumayika CD kapena kungoyimba nyimbo kuchokera kumagwero aliwonse omwe muli nawo.
Komabe, chofunikira kwambiri ndichakuti nyimboyi iyenera kumveka pafupipafupi kwa okamba omwe mukuwagwiritsa ntchito.
Kwa ma subwoofers, mukufuna kuyimba nyimbo ya 50 Hz pa "0 dB", komanso zokulitsa ma frequency apakati kapena apamwamba, muyenera kuyimba nyimbo ya 1 kHz pa "0 dB".
Kapenanso, mutha kugwiritsanso ntchito jenereta yazizindikiro.
Mumadula mawaya onse olowetsa ndi kutulutsa kuchokera ku amplifier, kulumikiza jenereta ya siginecha kumalo olowera ndi zingwe za RCA, ndikuyika ma multimeter otsogola pazotulutsa za amplifier.
Ndi jenereta ya siginecha yoyatsidwa, mumasinthira pafupipafupi kuti mulingo woyenera kwa okamba anu.
Apanso, mukufuna 50Hz ya subwoofers, kapena 1kHz ya midrange ndi treble amplifiers.
- Voterani zotsatira
Apa ndi pamene zimakhala zovuta.
Mukamaliza kugwiritsa ntchito pafupipafupi mayeso anu ndikujambulitsa mawerengedwe anu a multimeter, muyenera kuwerengera.
Ma amplifiers amayembekezeredwa kupanga mphamvu yotulutsa yovomerezeka mumtundu wa 50 mpaka 200 Watts, ndipo izi zimanenedwa m'mabuku kapena pamilandu yokulitsa.
Mumasintha magetsi anu kukhala ma watts ndikupanga mafananidwe.
Fomula yowerengera ma watts
E²/R pomwe E ndi voteji ndipo R ndi kukana.
Mutha kupeza kukana kovomerezeka pamlanduwo kapena m'mabuku anu amplifier.
Mwachitsanzo, yang'anani momwe mukugwiritsa ntchito 8 ohm subwoofers ndipo mumapeza kuwerengera kwa magetsi a 26. Mu subwoofer, 8 ohms ndi katundu wofanana wa 4 ohm resistors pa amplifier.
Watt \u26d (26 × 4) / 169, \uXNUMXd XNUMX Watts.
Ngati mphamvu yoyengedwayo siyikufanana ndi mphamvu yotulutsa yomwe ikulimbikitsidwa ya amplifier, ndiye kuti amplifier ili ndi cholakwika ndipo iyenera kufufuzidwa kapena kusinthidwa.
Pomaliza
Kuwona zotsatira za amplifier ndi multimeter ndikosavuta. Mumayezera voteji ya AC yomwe imapangidwa pazigawo zake zotulutsa ndikuiyerekeza ndi madzi ovomerezeka a amplifier.
Njira imodzi yokonzetsera kusatulutsa bwino kwa amplifier ndikuwongolera zopindula zake, ndipo mutha kuyang'ana nkhani yathu pakukonzekera ndi kuyesa kupindula kwa amplifier ndi ma multimeter.
Mafunso ofunsidwa kawirikawiri
Momwe mungayang'anire amplifier kuti agwire ntchito?
Kufufuza mwachangu ndikuwonetsetsa kuti mawuwo ndi abwino. Komanso, ngati mphamvu yolowera kapena magwero amawu ndi oyipa, mudzakhala ndi mavuto ngakhale amplifier ikugwira ntchito mwangwiro. Yesani magwero awa.
Kodi magetsi otulutsa mawu a amplifier ndi chiyani?
Magetsi omwe akuyembekezeredwa amtundu wa amplifier amawu ali mumitundu ya 14V mpaka 28V ya 8 ohm amplifier. Komabe, izi zimatengera mphamvu yolowera ndi mtundu wa amplifier wogwiritsidwa ntchito.
Kodi mungadziwe bwanji kuti amplifier yatenthedwa?
Zizindikiro za amplifier yopserera ndi monga kulira kwachilendo kapena kumveka kolakwika kuchokera kwa okamba nkhani, ndipo zokamba sizitulutsa mawu ngakhale pang'ono, ngakhale pamene makina omvera amayatsidwa.
Kodi mumawerenga bwanji ma amps okhala ndi clamp mita?
Ikani waya pakati pa mkono wa probe wa clamp yapano, ikani kukana ndikuwunika kuwerenga. Onetsetsani kuti waya watalikirana ndi 2.5cm kuchokera pamanja ndikuyesa imodzi imodzi.
Momwe mungayesere DC amplifiers ndi multimeter?
Ikani chiwongolero chakuda mu doko la "COM" ndikuwongolera kofiyira padoko la "Amp", lomwe nthawi zambiri limatchedwa "10A", kutengera ma multimeter. Kenako mumayika kuyimba kuti muwerenge ma amps a DC.
