Momwe mungakhazikitsire amplifier ndi multimeter

Kaya ndikuyenda m'mawa kwambiri kapena kuyenda usiku kwambiri, kuyimba nyimbo kuchokera pa stereo yagalimoto yanu ndi imodzi mwazabwino kwambiri. malingaliro abwino. Chomwe chimapangitsa kuti zikhale zabwinoko ndi makina abwino omvera omwe amakupatsani zonse zomwe zimamveka.

Kukhazikitsa koyenera pa amplifier kudzakuthandizani kupeza khalidwe lapamwamba la mawu. Komabe, anthu ambiri sadziwa kuti amplifier ndi chiyani ndipo sadziwa njira zoyenera zosinthira kuwongolera phindu.

Nkhaniyi ikukudziwitsani Zonse muyenera kudziwa, kuphatikiza kuwongolera pang'onopang'ono ndi DMM yokha. Tiyeni tiyambe.

Chifukwa chiyani multimeter ndi chida choyenera?

Zomwe zimatchedwanso multitester kapena volt-ohmmeter (VOM), multimeter ndi chipangizo chomwe chimagwiritsidwa ntchito poyeza kuchuluka kwa magetsi, panopa, ndi kukana komwe kulipo mu chigawo chamagetsi. Multimeter ndi yosavuta kugwiritsa ntchito.

Komano, amplifier ndi chipangizo chamagetsi chomwe chimagwiritsidwa ntchito kukulitsa kapena kukulitsa mphamvu yamagetsi, yapano, kapena mphamvu (amplitude) ya chizindikiro kuti ipindule.  

Kodi Amplifier Gain ndi chiyani? Ndi muyeso chabe wa matalikidwe kuchokera ku amplifier.

Umu ndi momwe multimeter ndi amplifier zimakhalira pamodzi. Kukonza amplifier kumangotanthauza kusintha matalikidwe a masipika agalimoto yanu. Izi zimakhudza mtundu wa mawu otuluka kuchokera kwa wokamba nkhani komanso, kumvetsera kwathunthu.

Mutha kugwiritsa ntchito makutu anu kuti muwone momwe ma audio awa akutuluka. Komabe, iyi si njira yabwino kwambiri yopezera mawu abwino kwambiri, chifukwa kupotoza kochepa kwambiri kumatha kuphonya.

Apa ndipamene multimeter imabwera bwino.

Multimeter ya digito imakuwonetsani mulingo wokulirapo wa ma audio anu.

Kumene muli ndi zikhalidwe zomwe mukuyembekezera ndi matalikidwe a siginecha, ma multimeter amakulolani kuti muwapeze mosavuta.

Ngakhale zonsezi, sizophweka monga momwe zikuwonekera. Mukakhazikitsa amplifier, voteji pakulowetsa mutu wa mutu uyenera kukhala wofanana ndi zomwe zimatuluka. Izi zimatsimikizira kuti zojambulidwa zimapewedwa.

Tsopano popeza zoyambira zaphimbidwa, tiyeni tipite ku bizinesi.

Kupanga amplifier ndi multimeter

Kuphatikiza pa multimeter, mudzafunika zida zina. Izi zikuphatikizapo

• Amplifier test speaker
• Buku la Amplifier kuti mudziwe zambiri za izo
• Calculator kuti muyese molondola kuchuluka kwa kupsinjika, ndi 
• CD kapena gwero lina lomwe limasewera pa 60 Hz. 

Zonsezi zimakhala ndi ntchito zake pokonza amplifier. Komabe, mudzagwiritsanso ntchito fomula. Ndiko kuti;

E = √PRkumene E ndi AC voteji, P ndi mphamvu (W) ndi R ndi kukana (Ohm). Tsatirani izi mosamala.

1. Yang'anani bukhuli kuti muwone mphamvu zotulutsa mphamvu

Onani buku la eni ake amplifier kuti mudziwe zambiri za mphamvu zake. Sizisintha ndipo mukufuna kuzilemba musanapitirize.

2. Onani kulephera kwa speaker

Kukaniza kumayesedwa mu ohms (ohms) ndipo mukufuna kulemba ma ohms akuwerengedwa kuchokera kwa wokamba nkhani. Ndondomekoyi ndi yosavuta.

Zomwe muyenera kuchita ndikulumikiza zolumikizira muzitsulo zawo; cholumikizira chowerengera chimalumikizana ndi cholumikizira cha VΩMa, ndipo cholumikizira chakuda chimalumikizana ndi cholumikizira cha COM.

Izi zikachitika, mumasuntha chosankha cha ma multimeter ku logo ya "Ohm" (yomwe nthawi zambiri imayimiridwa ndi "Ω") ndikuwonetsetsa kuti ikuwerenga 0 musanatenge njira zina. Izi zikuwonetsa kuti zolumikizira zotsogola sizikhudza. 

Tsopano mukukhudza zigawo zozungulira zowonekera pa sipika ndi mapiniwa. Apa ndipamene mumayang'anitsitsa kuwerengera kwa ohm pa multimeter.

Makhalidwe okana mu ohms amasinthasintha mozungulira 2 ohms, 4 ohms, 8 ohms ndi 16 ohms. Nawa kalozera woyezera kulephera kwa speaker.

3. Kuwerengera Target AC Voltage

Apa ndipamene ndondomeko yomwe yatchulidwa pamwambapa imabwera. Mukufuna kudziwa voteji yomwe mukufuna kugwiritsa ntchito mphamvu ya amplifier ndi ma speaker impedance zomwe mwalemba.

Apa ndipamene mumayika ma values ​​mu fomula. 

Mwachitsanzo, ngati kutulutsa kwanu kwa amplifier ndi 300 watts ndipo cholepheretsa ndi 12, chandamale chanu cha AC voltage (E) chidzakhala 60 (square root of (300(P) × 12(R); 3600).

Mudzazindikira kuchokera pa izi kuti mukamakulitsa chokulitsa chanu, mukufuna kuonetsetsa kuti multimeter ikuwerenga 60. 

Ngati muli ndi ma amplifiers okhala ndi maulamuliro angapo opindula, zowerengerazo ziyenera kuyikidwa mu fomula palokha.

 Tsopano kwa masitepe otsatirawa.

4. Chotsani mawaya othandizira

Mukazindikira mphamvu yamagetsi yomwe mukufuna, mumapitilira ndikudula zida zonse kuchokera pa amplifier. Izi zikuphatikizapo oyankhula ndi subwoofers.

Mfundo imodzi ndikudula ma terminals abwino okha. Izi zikuthandizani kuti mudziwe komwe mungawalumikizenso mukamaliza njira zonse.

Musanapitirire, onetsetsani kuti oyankhula achotsedwa kwathunthu ku amplifier.

5. Sinthani zofananira kukhala ziro

Tsopano mumayika zofananira zonse kukhala zero. Mwa kutembenuza zipolopolo zopindula pa iwo pansi (nthawi zambiri zotsutsana ndi wotchi), mumapeza kuchuluka kwa bandwidth.

Ma Equalizers akuphatikizapo Bass, Bass Boost Treble, ndi Loudness, pakati pa ena.

6. Khazikitsani voliyumu ya mutu wagawo

Kuti zotulutsa za stereo zikhale zoyera, mumayika mutu wanu kukhala 75% ya voliyumu yayikulu.

7. Sewerani kamvekedwe

Uwu ndiye mawu omvera kuchokera ku CD kapena gwero lina lolowera lomwe mumagwiritsa ntchito poyesa ndikuwongolera bwino amplifier yanu.

Chilichonse chomwe mumagwiritsa ntchito, muyenera kuwonetsetsa kuti sinus wave wave ili pa 0dB. Toni iyeneranso kukhala pakati pa 50Hz ndi 60Hz pa subwoofer ndi 100Hz pa amplifier yapakati. 

Sungani kamvekedwe mu kuzungulira.

8. Kupanga amplifier

Multimeter imayatsidwanso. Mumalumikiza zolumikizira ku madoko a speaker a amplifier; pini yabwino imayikidwa pa doko labwino ndipo pini yoyipa imayikidwa pa doko loyipa.

Tsopano mutembenuza pang'onopang'ono kuwongolera kwa amplifier mpaka mutafika pa chandamale AC voteji yolembedwa mu sitepe 3. Izi zikakwaniritsidwa, amplifier yanu idzakonzedwa bwino komanso molondola.

Zachidziwikire, kuti mutsimikizire kuti mawu ochokera ku zokuzira mawu anu ndi oyera momwe mungathere, mumabwereza izi pama amps anu onse.

9. Bwezeretsani voliyumu ya mutu wagawo 

Apa mutembenuza voliyumu pamutu mpaka ziro. Zimaphanso stereo.

10. Lumikizani Chalk onse ndi kusangalala nyimbo

Zida zonse zolumikizidwa mu gawo 4 zimalumikizidwanso ndi ma terminals awo. Mukaonetsetsa kuti zolumikizira zonse zalumikizidwa bwino, mumawonjezera kuchuluka kwa mutu wamutu ndikuyatsa nyimbo zomwe mukufuna kumvera.

Zotsatira

Mutha kuwona kuchokera pamasitepe omwe ali pamwambapa kuti kukhazikitsidwa kwanu kwa amp kumawoneka ngati kwaukadaulo. Komabe, kukhala ndi ma multimeter pamanja kumakupatsani zowerengera zolondola kwambiri zomwe zingakupatseni mawu abwino kwambiri.

Kupatula kugwiritsa ntchito makutu mosadalirika, njira zina zochotsera kupotoza zimaphatikizapo kugwiritsa ntchito oscilloscope. 

Ngati masitepe onsewa ndi ovuta kutsatira, kanema iyi ingakuthandizeni.