Mokhoa oa ho lekola tlhahiso ea amplifier ka multimeter

Li-amplifiers tsa koloi li thusa ho ntlafatsa boiphihlelo ba hau ba ho mamela, haholo ha ho tluoa 'mino o tsoang koloing ea hau kapa sistimi ea lapeng.

Ka tšebeliso ea li-transistors, li matlafatsa lets'oao la molumo ho tsoa mehloling ea ho kenya, kahoo li hlahisoa hantle ho libui tse kholo. 

Ha e le hantle, ha ho na le bothata ka amplifier, tsamaiso ea molumo ea koloi e senyeha.

Tsela e 'ngoe ea ho etsa tlhahlobo ke ho hlahloba hore na amplifier e hlahisa liphello tse nepahetseng, empa hase bohle ba tsebang ho etsa sena.

Tataisong ena, u tla ithuta ho lekola tlhahiso ea amplifier ka multimeter.

Ha re qaleng.

Ho hlahloba Mehloli ea Kenyelletso

Mohato oa pele oo u batlang ho o nka ke ho hlahloba hore na letšoao kapa matla a loketseng a tsoa mehloling ea ho kenya. 

Amplifier e tsamaisoa ke lithapo tse peli tse tsoang likarolong tse ling tsa koloi.

Tsena li kenyelletsa terata e le 'ngoe e tsoang betereng ea 12V le terata e' ngoe e tsoang sebakeng sa chassis ea koloi.

Haeba palo e nepahetseng ea matla e sa fanoe, u ka lebella hore amplifier e sebetse hampe.

1. Fumana amplifier ea hau le mohloli oa matla a kenyang

Hangata amplifier e fumaneha ka tlas'a dashboard, ka kutu ea koloi, kapa ka mor'a se seng sa litulo tsa koloi.

U tla boela u fumane hore na ke cable efe e fepa amplifier. U ka sheba bukana ea litaelo ea mong'a koloi ea hau kapa amplifier.

2. Bulela mollo oa koloi

U hloka hore terata e chese e le hore u fumane 'malo ho eona. Bulela mollo oa koloi ho qala ntle le ho bulela enjene. Ho lekane. 

3. Nka 'malo ho tloha lithapo tsa ho kenya

Beha multimeter ho voltage ea DC 'me u behe lintlha tsa tlhahlobo holim'a lithapo tse kentsoeng.

Beha loto ea teko e khubelu (positive) holim'a terata e ntle ebe u beha loto ea teko ea multimeter e ntšo (negative) holim'a terata ea fatše.

Phepelo e ntle ea motlakase e tla u fa lipalo lipakeng tsa 11V le 14V.

Teko ea molumo

Liteko tse ling tseo u ka li etsang li ka u fa leseli le eketsehileng mabapi le PSU ea hau.

Ha li-multimeter lead li ntse li hokahane le likhoele tse kentsoeng, phahamisa molumo ka koloing. 

Haeba u sa fumane keketseho leha e le efe ea ho bala ha motlakase, joale ho na le bothata ka mohloli oa ho kenya 'me u ntse u etsa lipatlisiso tse ling ka hona.

Teko ea fuse

Bothata bo bong ka phepelo e mpe ea matla a amplifier e ka ba fuse e senyehileng ea amplifier.

Ho leka sena, o fumana fuse ea matla ea amplifier ea hau, beha multimeter ea hau ho hanyetsa, 'me u behe liteko tsa liteko lipheletsong tse peli tsa fuse.

Haeba amplifier e bontša boleng bo fosahetseng, fuse e mpe 'me e hloka ho nkeloa sebaka.

U ka boela ua sheba tataiso ea rona ea ho hlahloba fuse ntle le multimeter.

Ntle le moo, li-amplifiers tse ling li na le mokhoa o bolokehileng.

Haeba ea hau e na le ts'ebetso ena 'me e kena ka mokhoa o sireletsehileng ha u e bulela, joale motlakase o fosahetse.

Taba e 'ngoe moo mokhoa o bolokehileng o ka kengoang ke haeba amplifier e behiloe holim'a kapa e ama sebaka sa conductive.

Mokhoa oa ho lekola tlhahiso ea amplifier ka multimeter

Kenya CD ho 50 Hz kapa 1 kHz ho 0 dB ka har'a lebokose la mohloli, beha multimeter ho AC voltage pakeng tsa 10 le 100 VAC, 'me u behe li-lead tsa multimeter ho li-terminals tsa tlhahiso ea amplifier. Amplifier e ntle e lebelletsoe ho fana ka lipalo tsa voltage tse tsamaellanang le matla a khothaletsoang hantle. 

Re tla hlalosa ka ho eketsehileng.

1. Tlosa libui

Mohato oa pele ke ho khaola lithapo tsa sebuela-hōle ho li-terminals tsa amplifier output.

Tsena ke li-terminals tseo u batlang ho leka ho tsona, kahoo ho khaola lithapo tsa sebuela-hole ho bohlokoa. 

Ntle le moo, o batla ho tima kapa ho tima li-crossovers tsa elektroniki tse hokahantsoeng le li-terminals tsa tlhahiso ea amplifier.

Sena se etsoa e le hore ho se be le tšitiso le liteko.

2. Beha multimeter ho voltage ea AC

Leha amplifier ea koloi e tsamaisoa ke motlakase oa DC, amplifier e fetola motlakase o tlase oa hona joale / o tlase hore e be molumo o phahameng oa tlhahiso.

E ea fapanyetsana, kahoo o beha multimeter ea hau ho voltage ea AC ho leka sephetho. Hangata motlakase oa AC o ngotsoe "VAC" ho multimeter. 

U ka e beha ka har'a 10-100VAC ho etsa bonnete ba hore multimeter e fana ka liphetho tse nepahetseng.

3. Beha li-multimeter lead li-terminals tsa tlhahiso ea amplifier

Ka mor'a hore mehato e 'meli e fetileng e phethoe, u beha feela tataiso ea multimeter ho li-terminals tsa amplifier.

Tsena ke liphetho tseo u khaolitseng lithapo tsa libuela ho tsona. 

Beha keta e ntle ea tlhahlobo ho terminal e ntle ea seholisa le moetapele oa tlhahlobo e mpe holim'a terminal ea tlhahiso e mpe.

Haeba amplifier e koetsoe kapa e sebetsa ka mono, kopanya feela tse ntle le tse mpe ho li-terminals tsa shunt output.

4. Sebelisa khafetsa tlhahlobo

Mokhoa o bonolo oa ho sebelisa maqhubu ho leka matshwao a tlhahiso ke ho bapala pina ea teko.

U kenya CD kapa u bapala pina e tsoang mohloling ofe kapa ofe oo u nang le oona.

Leha ho le joalo, ntho ea bohlokoa ka ho fetisisa ke hore pina ena e lokela ho utloahala ka makhetlo a nepahetseng bakeng sa libui tseo u li sebelisang. 

Bakeng sa li-subwoofers, u batla ho bapala pina ea 50 Hz ho "0 dB", 'me bakeng sa li-amplifiers tse bohareng kapa tse phahameng, u lokela ho bapala pina ea 1 kHz ho "0 dB".

Ntle le moo, o ka sebelisa jenereithara ea matšoao.

U hakolla lithapo tsohle tsa ho kenya le tse tsoang ho amplifier, hokela jenereithara ea matšoao ho li-terminals tse kentsoeng ka likhoele tsa RCA, 'me u behe li-multimeter lead li-terminals tsa tlhahiso ea amplifier. 

Ha jenereithara ea lets'oao e buletsoe, o fetola maqhubu ho ea boemong bo loketseng bakeng sa libui tsa hau.

Hape, o batla 50Hz bakeng sa li-subwoofers, kapa 1kHz bakeng sa li-amplifiers tsa midrange le treble. 

5. Reita liphetho

Ke mona moo ho bang thata.

Kamora ho sebelisa khafetsa ea tlhahlobo ea hau le ho hatisa 'malo oa hau oa multimeter, o tla hloka ho etsa lipalo. 

Li-amplifiers li lebelletsoe ho hlahisa matla a khothaletsoang ho tloha ho li-watts tse 50 ho isa ho tse 200, 'me hangata sena se boletsoe bukeng ea tataiso kapa ka har'a mokotla oa amplifier.

U fetola voltage ea hau hore e be li-watts 'me u etse lipapiso. 

Foromo ea ho bala li-watts 

E²/R moo E e leng voltage mme R e le khanyetso. 

U ka fumana khanyetso e khothaletsoang nyeoeng kapa bukeng ea hau ea amplifier.

Ka mohlala, sheba boemo boo u sebelisang 8 ohm subwoofers 'me u fumana ho bala ha voltage ea 26. Ka subwoofer, 8 ohms ke mojaro o tšoanang oa 4 ohm resistors ho amplifier.

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

Haeba matla a lekantsoeng a sa lumellane le matla a khothaletsoang a amplifier, joale amplifier ha e na sekoli 'me e tlameha ho hlahlojoa kapa ho nkeloa sebaka.

fihlela qeto e

Ho lekola tlhahiso ea amplifier ka multimeter ho bonolo. U lekanya motlakase oa AC o hlahisoang liteisheneng tsa eona ebe o o bapisa le metsi a khothaletsoang a amplifier.

Mokhoa o mong oa ho lokisa phallo e mpe ea amplifier ke ho hlophisa melemo ea eona, 'me u ka sheba sengoloa sa rona mabapi le ho lokisa le ho leka melemo ea amplifier ka multimeter.

Lipotso tse atisang ho botsoa

Mokhoa oa ho lekola amplifier bakeng sa ts'ebetso?

Tlhahlobo e potlakileng ke ho etsa bonnete ba hore boleng ba molumo bo molemo. Hape, haeba matla a ho kenya kapa mehloli ea molumo e le mpe, u tla ba le mathata le haeba amplifier e sebetsa hantle. Lekola mehloli ena.

Matla a sebuela-hōle a molumo ke eng?

Maqhubu a lebeletsoeng a sebuela-hōle sa molumo a boemong ba 14V ho isa ho 28V bakeng sa 8 ohm amplifier. Leha ho le joalo, sena se itšetlehile ka matla a ho kenya le mofuta oa amplifier e sebelisitsoeng.

U ka tseba joang hore amplifier e chesitsoe?

Matšoao a sebuela-hōle se cheleng a akarelletsa ho luma ho sa tloaelehang kapa melumo e sothehileng e tsoang ho libui, ’me libui ha li hlahise molumo ho hang, esita le ha tsamaiso ea molumo e buletsoe.

U bala li-amps joang ka clamp meter?

Beha terata pakeng tsa sleeve ea probe ea clamp ea hona joale, beha sebaka sa ho hanyetsa 'me u hlahlobe ho bala. Etsa bonnete ba hore terata e bonyane 2.5 cm hole le letsoho la sensor 'me u lekanye e le 'ngoe ka nako.

Mokhoa oa ho lekola li-amplifiers tsa DC ka multimeter?

Kenya loto e ntšo boema-kepeng ba "COM" le lead e khubelu boema-kepeng ba "Amp", hangata e ngotsoeng "10A", ho ipapisitse le multimeter. Ebe o beha mohala ho bala li-amps tsa DC.