Dab tsi yog qhov loj ntawm lub fuse rau 1000W amplifier (ntxiv)
Txheem
Koj tau txais kev tiv thaiv los ntawm ib qho hluav taws xob fuse nkaus xwb yog tias qhov ntsuas qhov sib npaug ntawm lub voj voog lossis cov kab hluav taws xob uas nws tau nruab.
Thaum qhov kev ntsuam xyuas no siab dua li qhov xav tau, koj tau txais kev puas tsuaj rau koj cov neeg hais lus, thiab thaum nws qis dua, koj mus tas li ua txhaum cov fuse hlau thiab lub suab kaw lus.
Nyeem ntawv kom paub cov fuse ratings koj yuav tsum tau nruab los tiv thaiv koj 1000W amplifier hauv koj lub tsheb lossis hauv tsev.
Cia peb pib.
Dab tsi yog qhov fuse loj rau 1000W amplifier?
Rau 1000 watt suab amplifier hauv koj lub tsheb, koj yuav xav tau ib lub fuse ntawm 80 amps los tiv thaiv nws. Qhov kev ntsuam xyuas no tau txais los ntawm cov mis I = P / V, uas yuav siv sij hawm rau hauv tus account lub hwj chim ntsuam xyuas ntawm lub amplifier, lub zog tso zis ntawm lub tsheb lub alternator, thiab cov efficiency ntawm lub amplifier.
Txawm hais tias lub tsheb lub suab amplifier feem ntau tuaj nrog lub fuse sab hauv los tiv thaiv nws ntawm lub zog hluav taws xob, qhov kev tiv thaiv no tsis txuas mus rau sab nraud ntawm cov neeg hais lus thiab tag nrho lub suab.
Qhov no txhais tau tias koj tseem xav tau lub fuse hluav taws xob los tiv thaiv koj lub tshuab hluav taws xob tag nrho thiab xaim hluav taws xob thaum muaj hluav taws xob surge.
Feem ntau, xaiv lub fuse tshiab yuav tsum ncaj nraim. Koj tsuas yog xaiv ib qho nrog tib tus qauv thiab ntsuas raws li lub thawv qub cua tshuab fuse.
Txawm li cas los xij, qhov no yuav nyuaj yog tias koj tsis muaj qhov qhia txog qhov ntsuas lossis yog tias koj tab tom txhim kho lub amplifier tshiab hauv koj lub tsheb.
Txhawm rau pab koj nkag siab txog yuav ua li cas kom loj qhov hluav taws xob fuse, peb yuav piav qhia peb yam uas tau hais los saum toj no yog dab tsi. Peb tseem yuav qhia koj qhov chaw nyob hauv cov qauv qhia.
Amplifier hwj chim ntsuam xyuas thiab efficiency chav kawm
Lub zog ntawm lub suab amplifier yog lub zog tso zis uas nws tawm thaum ua haujlwm. Thaum koj saib ntawm koj lub tsheb amplifier, koj pom qhov ntsuas wattage hauv cov specs. Hauv peb qhov xwm txheej, peb cia siab tias yuav pom 1000W spec. Tam sim no muaj lwm yam los xav txog.
Lub suab amplifiers feem ntau poob rau hauv cov chav kawm sib txawv, thiab cov chav kawm no yog tus cwj pwm los ntawm ntau theem ntawm kev ua haujlwm hauv kev ua haujlwm. Cov qib efficiency ntawm lub amplifier yog tus nqi ntawm lub zog nws radiates nyob rau hauv watts piv rau nws input zog.
Cov chav kawm suab nrov nrov tshaj plaws thiab lawv cov qib kev ua tau zoo tau teev tseg hauv qab no:
- Class A - efficiency 30%
- Class B - 50% efficiency
- Class AB - efficiency 50-60%
- Chav Kawm C - 100% efficiency
- Class D - 80% efficiency
Koj thawj zaug coj cov txiaj ntsig zoo rau hauv tus account thaum xam qhov tseeb lub hwj chim lossis lub hwj chim tus nqi nkag mus rau hauv cov mis. Koj yuav siv lawv li cas?
Class A amplifiers feem ntau yog siv nyob rau hauv qis zog circuits vim lawv inefficiency. Qhov no txhais tau tias koj tsis nquag pom lawv ntawm 1000 watt systems.
Koj yuav muaj feem cuam tshuam nrog chav kawm AB, chav kawm C thiab chav kawm D amplifiers vim lawv cov kev ua haujlwm siab dua thiab kev nyab xeeb hauv 1000 watt systems.
Piv txwv li, rau 1000 watt chav kawm D chav tsev nrog 80% kev ua haujlwm, koj lub tshuab hluav taws xob pib lub zog tawm mus txog 1250 watts (1000 watts / 80%). Qhov no txhais tau hais tias tus nqi hluav taws xob koj nkag mus rau hauv cov qauv yog 1250W, tsis yog 1000W.
Tom qab ntawd, koj khaws 1000 watts rau chav kawm C amps thiab txog 1660 watts rau chav kawm AB amps.
Generator tso zis
Thaum peb xam cov fuse rating rau amplifiers, peb yeej xam qhov tam sim no los yog tam sim no xa los ntawm nws lub hwj chim mov. Nyob rau hauv cov ntaub ntawv ntawm lub tsheb amplifier, peb tab tom xav txog qhov tam sim no muab los ntawm lub alternator.
Tsis tas li ntawd, qhov ntsuas ntawm hluav taws xob fuses yeej ib txwm qhia hauv amperage. Yog tias koj pom qhov ntsuas "70" ntawm lub fuse, nws txhais tau tias nws tau ntsuas ntawm 70 amps. Txij li thaum lub hwj chim yam ntxwv ntawm cov neeg hais lus feem ntau yog lub hwj chim muaj nuj nqis, cov qauv yuav pab ua kom cov kev hloov pauv uas tsim nyog.
Lub 1000W amplifier yeej ib txwm khiav 1000W alternator, yog li peb xav hloov lub zog ntawd rau amps. Qhov no yog qhov uas tus qauv tuaj rau hauv.
Cov qauv yooj yim rau hloov watts rau amps yog raws li hauv qab no:
Ampere = W / Volt or I = P/V Qhov twg "Kuv" yog lub amp, "P" yog lub zog, thiab "V" yog voltage.
Kev txiav txim siab qhov hluav taws xob muab los ntawm lub tshuab hluav taws xob tsis yog qhov nyuaj, vim nws feem ntau tau teev nyob rau ntawm cov khoom siv hluav taws xob. Qhov nruab nrab, tus nqi no nyob ntawm 13.8 V rau 14.4 V, nrog rau qhov tom kawg yog ntau dua. Tom qab ntawd, hauv cov mis, koj khaws 14.4V raws li tus nqi hluav taws xob tas li.
Yog tias koj xav tau qhov tseeb hauv koj qhov kev kwv yees, koj tuaj yeem siv multimeter los kuaj xyuas lub tshuab hluav taws xob muab hluav taws xob. Peb cov lus qhia rau kev kuaj mob lub tshuab hluav taws xob nrog lub tshuab hluav taws xob multimeter pab nrog qhov no.
Piv txwv ntawm Fuse Ratings rau Amplifier Fais Fab thiab Chav Kawm
Nrog rau txhua yam uas tau hais, yog tias koj xav kom tau txais kev pom zoo rau qhov amp, koj yuav tsum xub xav txog nws cov chav kawm thiab kev ua haujlwm zoo. Koj siv qhov kev ua tau zoo no kom tau txais lub tshuab hluav taws xob pib lub zog nkag, thiab tom qab ntawd hloov nws mus rau amps kom paub seb nws muaj kev nyab xeeb npaum li cas rau kos.
1000 watt class AB amplifier
Nrog rau 1000 watt chav kawm AB amplifier koj yuav pom thawj lub zog tawm tswv yim uas nyob ib puag ncig 1660 watts xav txog nws qhov kev ua tau zoo 60% (1000 watts / 0.6). Tom qab ntawd koj siv tus qauv:
IB = 1660/14.4 = 115А
Lub fuse loj koj siv rau chav kawm AB amplifiers yuav nyob ze rau tus nqi no. Qhov no yog 110 amp fuse.
1000 watt chav kawm C amplifier
Ntawm 100% kev ua tau zoo, koj tau txais tib lub zog tso zis los ntawm Class C amplifiers raws li lawv lub zog nkag. Qhov no txhais tau tias "P" yuav nyob twj ywm ntawm 1000 watts. Ces tus qauv zoo li no:
IB = 1000/14.4 = 69.4А
Los ntawm kev ntsuas tus nqi no mus rau tus nqi ze tshaj plaws, koj xaiv 70 amp fuse.
1000 watt chav kawm D amplifier
Nrog rau kev ua haujlwm ntawm 80%, 1000 watt chav kawm D amplifiers pib nrog 1,250 watts (1000 watts / 0.8). Koj mam li xam qhov qeb duas uas siv cov nqi no hauv cov qauv:
IB = 1250/14.4 = 86.8А
Koj tab tom nrhiav rau lub tsheb fuse 90A.
Yuav ua li cas txog qhov sib txawv fuses?
500W chav kawm D amplifier
Rau 500-watt amplifier, cov hauv paus ntsiab lus tseem zoo ib yam. Es tsis txhob siv 500 watts hauv cov mis, koj tab tom xav txog kev ua haujlwm hauv chav kawm. Hauv qhov no, 80% kev ua tau zoo txhais tau tias koj siv 625W hloov. Txhawm rau xam koj qhov kev ntaus nqi, koj mam li pub cov nqi no rau hauv cov qauv.
IB = 625/14.4 = 43.4А
Rounding uas mus txog qhov ze tshaj qhov ntsuas, koj tab tom nrhiav rau 45 amp fuse.
1000W chav kawm D fuse hauv 120V circuits
Yog hais tias lub amplifier koj xav fuse yog siv nyob rau hauv koj lub tsev thiab tsis nyob rau hauv koj lub tsheb, lub AC fais fab mov rau nws yog feem ntau 120V los yog 240V. Rau 120V fais fab mov, koj siv qhov tseem ceeb:
Kuv = 1250/120 = 10.4 A. Qhov no txhais tau tias koj xaiv 10 amp fuse.
Rau 240 V fais fab mov, cov qauv hauv qab no siv hloov pauv:
Kuv \u1250d 240/5.2 \u5d XNUMX A. Koj hloov tus lej no mus rau qhov chaw nyob ze tshaj plaws, uas yog, koj xaiv XNUMXA fuse.
Txawm li cas los xij, ntxiv rau tag nrho cov no, muaj ib qho ntxiv uas yuav tsum tau xav txog thaum txiav txim siab qhov ntsuas tam sim no kom nyab xeeb.
Cov yam ntxwv cuam tshuam rau qhov ntsuas Fuse
Muaj ntau yam cuam tshuam rau hauv fuse sizing, thiab lawv yuav ua rau lub hauv paus ntsuam xyuas siab dua los yog qis dua qhov uas tau txiav txim los ntawm cov qauv.
Qee yam ntawm cov xwm txheej no suav nrog qhov rhiab heev ntawm cov cuab yeej uas lub fuse tiv thaiv, lub tshuab cua txias muaj, thiab yuav ua li cas cov cables sib txuas.
Thaum xaiv lub fuse, koj yuav tsum xav txog nws qhov ntsuas hluav taws xob, qhov siab tshaj plaws luv luv tam sim no, thiab lub cev loj. Hom fuse siv hauv Circuit Court feem ntau txiav txim siab txog yam yuav tsum tau xav txog.
Nyob rau hauv lub tsheb amps, koj siv lub tsheb hniav fuse, thaum cartridge fuses feem ntau pom nyob rau hauv koj cov khoom siv hauv tsev.
Tam sim no, thaum txiav txim siab qhov ntsuas fuse, muaj ib qho tseem ceeb uas yuav tsum tau them sai sai rau. Qhov no yog qhov teeb meem fuse rating.
Fuse derating
Derating tshwm sim thaum qhov pom zoo fuse ntsuam xyuas raug hloov kom tsis txhob plam tawm. Qhov kub ntawm ib puag ncig uas koj npaj siab yuav siv lub fuse yog ib qho tseem ceeb uas cuam tshuam rau qhov kev ntsuam xyuas fuse zaum kawg.
Tus qauv fusible hlau ntsuas kub yog 25 ° C, uas derates fuses los ntawm 25% los ntawm lawv cov kev ntsuas ib txwm. Hloov chaw siv 70A fuse rau chav kawm C amplifier, koj xaiv lub fuse nrog 25% siab dua.
Qhov no txhais tau tias koj siv 90A fuse. Qhov kev tawg no yuav siab dua lossis qis dua nyob ntawm lwm yam uas tau hais los saum toj no.
Cov lus nug nquag nug
Muaj pes tsawg amps ua 1000 watt amplifier kos?
Nws nyob ntawm qhov voltage lub amplifier ua haujlwm nrog. Lub 1000W amplifier siv 8.3 amps thaum ua haujlwm hauv 120V Circuit Court, 4.5 amps thaum ua haujlwm hauv 220V circuit, thiab 83 amps thaum ua haujlwm hauv 12V circuit.
Dab tsi fuse loj kuv xav tau rau 1200W?
Rau 1200 watts, koj siv 10 amp fuse hauv 120 volt circuit, 5 amp fuse hauv 240 volt circuit, thiab 100 amp fuse hauv 12 volt circuit. Lawv txawv nyob ntawm seb tus nqi ntawm derating xav tau.
