Ungahlola kanjani ukuphuma kwe-amplifier nge-multimeter

Izikhulisa-zwi zisiza ukuthuthukisa umuzwa wakho wokulalela, ikakhulukazi uma kuziwa kumculo ophuma emotweni yakho noma kusistimu yesitiriyo sasekhaya.

Ngokusebenzisa ama-transistors, akhulisa isignali yomsindo evela emithonjeni yokufaka, ngakho akhiqizwa kahle kakhulu kuzipikha ezinkulu. 

Yiqiniso, uma kunenkinga nge-amplifier, isistimu yomsindo wemoto iyahlupheka.

Enye indlela yokwenza ukuxilongwa ukuhlola ukuthi i-amplifier ikhiqiza imiphumela efanele, kodwa akuwona wonke umuntu owaziyo ukwenza lokhu.

Kulo mhlahlandlela, uzofunda ukuthi ungahlola kanjani ukuphuma kwe-amplifier nge-multimeter.

Ake siqale.

Ihlola Imithombo Yokokufaka

Isinyathelo sokuqala ofuna ukusithatha ukuhlola ukuthi isignali efanele noma amandla avela emithonjeni yokufaka. 

I-amplifier inikwa amandla yizintambo ezimbili ezivela kwezinye izingxenye zemoto.

Lokhu kufaka phakathi intambo eyodwa evela ebhethrini elingu-12V kanye nenye intambo evela endaweni ye-chassis yemoto.

Uma inani elifanele lamandla linganikezwa, ungalindela ukuthi isikhulisi sisebenze kabi.

1. Thola i-amplifier yakho kanye nomthombo wamandla wokufaka

Iamplifier ngokuvamile itholakala ngaphansi kwedeshibhodi, esiqwini semoto, noma ngemuva kwesinye sezihlalo zemoto.

Uzothola futhi ukuthi iyiphi ikhebula ephakela i-amplifier. Ungabheka imanuwali yomnikazi yemoto yakho noma i-amplifier.

2. Vula i-iignity yemoto

Udinga intambo ukuthi ishise ukuze uthole ukufundwa kuyo. Vula ukuthutha kwemoto ukuze uqale ngaphandle kokuvula injini. Sekwanele. 

3. Thatha ukufunda ezintanjeni zokufaka

Setha i-multimeter ku-voltage ye-DC bese ubeka imikhondo yokuhlola ezintanjeni zokufaka ezibonisiwe.

Beka umthofu wokuhlola obomvu (olungile) ocingweni oluphozithivu bese ubeka umthofu wokuhlola omnyama we-multimeter (negative) entanjeni yaphansi.

Ukunikezwa kwamandla okuhle kuzokunikeza ukufundwa phakathi kwe-11V ne-14V.

Ukuhlolwa kwevolumu

Ukuhlola okwengeziwe ongakwenza kungakunikeza ulwazi olwengeziwe mayelana ne-PSU yakho.

Ngenkathi imikhondo ye-multimeter isaxhunywe ezintanjeni zokufaka, khuphula ivolumu emotweni. 

Uma ungakutholi ukwenyuka kokufundwa kwe-voltage, khona-ke kunenkinga ngomthombo wokufakwayo futhi wenza eminye imibuzo ngakho.

Ukuhlolwa kwe-fuse

Inkinga eyodwa nge-amplifier power supply embi ingaba i-fuse ye-amplifier eyonakele.

Ukuhlola lokhu, uvele uthole i-fuse yamandla yeamplifier yakho, usethe i-multimeter yakho ukuze imelane, bese ubeka imikhondo yokuhlola kuzo zombili iziphetho zefuse.

Uma i-amplifier ibonisa inani elingalungile, i-fuse yimbi futhi idinga ukushintshwa.

Ungahlola futhi umhlahlandlela wethu wokuhlola amafuse ngaphandle kwe-multimeter.

Ngaphezu kwalokho, amanye ama-amplifiers anemodi ephephile.

Uma eyakho ifakwe lo msebenzi futhi ingena kumodi ephephile lapho ivuliwe, khona-ke ukunikezwa kwamandla kunephutha.

Icala elilodwa lapho imodi ephephile ingenziwa isebenze iwukuba i-amplifier ifakwe noma ithinte indawo yokuqondisa.

Ungahlola kanjani ukuphuma kwe-amplifier nge-multimeter

Faka i-CD kokuthi 50 Hz noma 1 kHz ku-0 dB ebhokisini lomthombo, setha i-multimeter ku-voltage ye-AC phakathi kuka-10 no-100 VAC, futhi ubeke imikhondo ye-multimeter kumatheminali okukhiphayo we-amplifier. I-amplifier enhle kulindeleke ukuthi inikeze ukufundwa kwamandla kagesi afana namandla okukhipha anconyiwe ngokuphelele. 

Sizochaza ngokuqhubekayo.

1. Khubaza izipikha

Isinyathelo sokuqala ukunqamula izintambo zesipika kumatheminali okukhipha i-amplifier.

Lawa amatheminali ofuna ukuhlola kuwo, ngakho ukunqamula izintambo zesipika kubalulekile. 

Ngaphezu kwalokho, ufuna ukucisha noma ukukhubaza noma yimaphi ama-crossover kagesi axhunywe kumatheminali okukhiphayo we-amplifier.

Lokhu kwenziwa ukuze kungabikho ukuphazamiseka ekuhlolweni.

2. Setha i-multimeter ku-voltage ye-AC

Nakuba i-amplifier yemoto inikwa amandla amandla kagesi e-DC, isikhulisi siguqula i-voltage ephansi yamanje/ephansi ibe ukufundwa kwesignali ephezulu.

Iyashintshana, ngakho-ke usetha i-multimeter yakho ku-voltage ye-AC ukuze uhlole okuphumayo. I-voltage ye-AC imvamisa ibhalwe ukuthi "VAC" ku-multimeter. 

Ungayisetha futhi kububanzi be-10-100VAC ukuze uqiniseke ukuthi i-multimeter inikeza imiphumela efanele.

3. Beka imikhondo ye-multimeter kumatheminali okukhiphayo we-amplifier

Ngemuva kokuthi izinyathelo ezimbili ezedlule seziqediwe, uvele ubeke umkhondo we-multimeter kumatheminali okukhiphayo we-amplifier.

Lokhu okukhiphayo onqamule kukho izintambo zesipika. 

Beka i-positive test lead kutheminali ephumayo ephozithivu ye-amplifier kanye ne-negative test lead kutheminali yokukhiphayo enegethivu.

Uma i-amplifier ivaliwe noma isebenza ku-mono, vele uxhume i-positive kanye ne-negative iholela kumatheminali okukhiphayo we-shunt.

4. Sebenzisa imvamisa yokuhlola

Indlela elula yokusebenzisa imvamisa ukuhlola amasignali okukhiphayo ukudlala ingoma yokuhlola.

Ufaka i-CD noma uvele udlale ingoma kunoma yimuphi umthombo wokufaka onawo.

Kodwa-ke, into ebaluleke kakhulu ukuthi le ngoma kufanele izwakale imvamisa efanele kuzipikha ozisebenzisayo. 

Kuma-subwoofers, ufuna ukudlala iculo le-50 Hz kokuthi "0 dB", futhi kuma-amplifiers amaphakathi noma aphezulu, udinga ukudlala ingoma engu-1 kHz kokuthi "0 dB".

Kungenjalo, ungasebenzisa futhi ijeneretha yesiginali.

Unqamula zonke izintambo zokufaka nezikhiphayo ku-amplifier, xhuma ijeneretha yesiginali kumatheminali okokufaka ngezintambo ze-RCA, bese ubeka umkhondo we-multimeter kumatheminali okukhiphayo we-amplifier. 

Njengoba i-generator yesignali ivuliwe, ushuna imvamisa ibe sezingeni elifanele lezipikha zakho.

Futhi, ufuna i-50Hz yama-subwoofers noma i-1kHz yama-midrange nama-treble amplifiers. 

5. Linganisa imiphumela

Yilapho kuba nzima khona.

Ngemva kokufaka imvamisa yakho yokuhlola futhi urekhoda ukufundwa kwakho kwe-multimeter, uzodinga ukwenza izibalo ezithile. 

Ama-amplifiers kulindeleke ukuthi akhiqize amandla anconyiwe aphumayo ebangeni lama-watts angama-50 kuye kwangama-200, futhi lokhu kuvame ukushiwo kumanuwali noma kukesi le-amplifier.

Uguqula i-voltage yakho ibe ama-watt futhi wenze ukuqhathanisa. 

Ifomula yokubala ama-watts 

I-E²/R lapho u-E eyi-voltage no-R engukumelana. 

Ungathola ukumelana okunconyiwe kukesi noma kumanuwali weamplifier.

Isibonelo, bheka isimo lapho usebenzisa ama-subwoofers angu-8 ohm futhi uthola ukufundwa kwe-voltage engu-26. Ku-subwoofer, i-8 ohms ingumthwalo ohambisanayo we-4 ohm resistors ku-amplifier.

Watt \u26d (26 × 4) / 169, \uXNUMXd XNUMX watts. 

Uma amandla alinganisiwe engafani namandla okukhipha anconyiwe esikhulisi, khona-ke i-amplifier inesici futhi kufanele ihlolwe noma ishintshwe.

isiphetho

Ukuhlola ukuphuma kwe-amplifier nge-multimeter kulula. Ukala i-voltage ye-AC ekhiqizwe kumatheminali ayo okukhiphayo futhi uyiqhathanise nomthamo onconywayo we-amplifier.

Enye indlela yokulungisa ukungaphumeleli kahle kwe-amplifier ukushuna izinzuzo zaso, futhi ungabheka indatshana yethu yokulungisa nokuhlola izinzuzo ze-amplifier nge-multimeter.

Imibuzo evame ukubuzwa

Ungahlola kanjani i-amplifier ukusebenza?

Ukuhlola okusheshayo wukuqinisekisa ukuthi ikhwalithi yomsindo yinhle. Futhi, uma amandla okokufaka noma imithombo yomsindo mibi, uzoba nezinkinga ngisho noma i-amplifier isebenza kahle. Hlola le mithombo.

Ithini i-voltage ephumayo yeamplifier yomsindo?

I-voltage ekhishwayo elindelekile yesikhulisi somsindo ikububanzi obungu-14V ukuya ku-28V ku-8 ohm amplifier. Nokho, lokhu kuncike emandleni okokufaka kanye nohlobo lwe-amplifier esetshenzisiwe.

Unganquma kanjani ukuthi i-amplifier ishisiwe?

Izimpawu ze-amplifier eshile zihlanganisa ukubhuza okungavamile noma imisindo ehlanekezelwe evela ezipikheni, futhi izipikha aziwukhiqizi nhlobo umsindo, ngisho nalapho isistimu yomsindo ivuliwe.

Uwafunda kanjani ama-amps nge-clamp meter?

Beka intambo phakathi komkhono we-probe we-clamp yamanje, setha ububanzi bokumelana futhi uhlole ukufundwa. Qiniseka ukuthi intambo ikude okungenani no-2.5 ​​cm kumkhono wenzwa futhi ukale eyodwa ngesikhathi.

Ungawahlola kanjani ama-amplifiers e-DC nge-multimeter?

Faka ukuhola okumnyama embobeni ethi "COM" kanye nomthofu obomvu embobeni ethi "Amp", ngokuvamile ebhalwe ukuthi "10A", kuye ngokuthi i-multimeter. Bese usetha ukudayela ukuze ufunde ama-amps e-DC.