Txhawm rau kuaj cov khoom siv hluav taws xob, muaj hluav taws xob thauj khoom. Cov cuab yeej no ua haujlwm ntawm lub hauv paus ntsiab lus ntawm kev tsim cov teeb liab. Cov tsis tseem ceeb ntawm cov kev hloov kho muaj xws li qhov pib voltage, qhov tso cai ntau dhau, thiab qhov cuam tshuam dissipation. Muaj ntau hom khoom siv. Yuav kom nkag siab txog cov khoom thauj, nws yog thawj zaug ntawm txhua qhov kev pom zoo kom paub koj tus kheej nrog cov duab kos.
Kev hloov pauv tswv yim
Standard load circuit muaj xws li resistors, rectifier thiab modulator ports. Yog tias peb xav txog cov khoom siv tsawg zaus, ces lawv siv transceivers. Cov ntsiab lus no ua haujlwm ntawm kev sib cuag qhib. Cov sib piv yog siv los xa cov teeb liab. Tsis ntev los no, loads ntawm stabilizers tau suav hais tias nrov. Ua ntej tshaj plaws, lawv raug tso cai siv hauv DC network. Lawv muaj ib tug ceev transformation txheej txheem. Nws kuj tseem tsim nyog sau cia tias qhov tseem ceeb ntawm txhua qhov kev thauj khoomsuav hais tias yog amplifier thiab regulator. Cov cuab yeej no raug kaw ntawm lub phaj. Lawv muaj ib tug ncaj high conductivity. Nws yog tus modulator uas yog lub luag hauj lwm rau tiam txheej txheem ntawm cov qauv.
Kev hloov pauv hom
Txhim qhov txawv ntawm cov khoom siv impulse thiab programmable. Nyob rau hauv ib qho kev sib cais, cov chav kuaj tau muab faib, uas tsim nyog rau cov khoom siv hluav taws xob muaj zog. Tsis tas li ntawd, kev hloov kho txawv ntawm qhov zaus uas lawv ua haujlwm. Tsawg zaus loads yog nruab nrog transistors nrog ib tug channel adapter. Lawv siv los ntawm AC lub zog. Cov qauv ntawm hom high-frequency yog tsim los ntawm kev qhib thyristor.
Pulse devices
Pulsed electronic load ua li cas? Ua ntej tshaj plaws, cov kws tshaj lij pom zoo xaiv lub thyristor zoo rau kev sib dhos. Nyob rau hauv cov ntaub ntawv no, lub modulator tsuas yog haum rau ob theem. Cov kws tshaj lij hais tias qhov nthuav dav yuav tsum ua haujlwm sib hloov. Nws cov zaus ua haujlwm yuav tsum yog kwv yees li 4000 kHz. Lub transceiver yog ntsia rau hauv lub load los ntawm ib tug modulator. Tom qab soldering lub capacitors, nws tsim nyog ua hauj lwm ntawm lub amplifier.
Rau kev ua haujlwm ruaj khov ntawm kev thauj khoom, yuav tsum tau muaj peb lub channel directivity lim. Ib tug tester yog siv los ntsuas lub cuab yeej. Kev tiv thaiv yuav tsum yog kwv yees li 55 ohms. Nrog rau qhov nruab nrab load, ib qho khoom siv hluav taws xob hauv tsev ua kom muaj qhov ntsuas hluav taws xob hauv cheeb tsam ntawm 200 watts. Cov sib piv yog siv los ua kom qhov rhiab heev. Thaum lub kaw lus kaw, nws tsim nyog kuaj xyuas lub voj voog ntawm lub capacitor. Yog hais tias qhov kev tiv thaiv ntawm kev sib cuag yog underestimated, ces lub transceiver yuav tsum tau hloov mus rau ib tug capacitive analogue. Ntau tus kws tshaj lij taw qhia txog qhov ua tau ntawm kev siv yoj lim dej, uas muaj cov khoom siv zoo. Regulators rau lub hom phiaj no yog siv rau ntawm lub triode.
Programmable Models
Cov khoom siv hluav taws xob hauv hluav taws xob tau yooj yim sib sau ua ke. Rau lub hom phiaj no, ib tug expansion transceiver rau 230 V yog siv, peb contactors yog siv los xa cov teeb liab, uas tawm ntawm lub transistor. Regulators yog siv los tswj cov txheej txheem hloov dua siab tshiab. Linear analogs feem ntau yog siv. Lub triode yog siv nrog ib tug insulator. Hauv qhov no, koj yuav xav tau lub tshuab blowtorch. Lub resistor yog tsau ncaj qha rau ntawm lub transceiver.
Cov kev sib piv tsis tu ncua, uas muaj qhov cuam tshuam tsawg, yog qhov tseeb tsis haum rau tus qauv. Nws tseem tsim nyog sau cia tias ntau tus ua yuam kev thaum lawv nruab ib lub lim. Rau kev ua haujlwm ib txwm ua dhau los, tsuas yog siv cov capacitive analogues. Lub nominal voltage ntawm cov zis yuav tsum yog kwv yees li 200 V nrog ib tug tsis kam ntawm 40 ohms. Yog tias koj sib sau cov khoom siv ntawm ib qho kev sib txuas ib leeg, ces cov qauv linear tsis haum.
Ua ntej tshaj plaws, lub cuab yeej yuav tsis ua haujlwm vim yog lub zog loj ntawm thyristor. Nws kuj tseem tsim nyog sau cia tias tus qauv yuav xav tau cov kab modulator nrog qis rhiab heev. Qee cov kws tshaj lij siv cov stabilizers thaum sib dhos. Yog tias peb xav txog kev hloov kho yooj yim, ces ib hom kho tau haum. Txawm li cas los xij, cov ntsiab lus inverting feem ntau yog siv.
Lab hloov kho
Lab tau teeb tsaua-nws-koj tus kheej hluav taws xob load nrog lub zog thyristor. Resistor yog siv nrog lub capacitance ntawm 40 pF. Cov kws tshaj lij hais tias tsuas yog expansion hom capacitor tuaj yeem siv tau. Kev saib xyuas tshwj xeeb thaum sib dhos yuav tsum tau them rau lub modulator. Yog hais tias koj siv ib tug wired analog, ces lub load yuav tsum tau peb lim. Ib qho yooj yim hluav taws xob load muaj ib theem-hom modulator nrog ib tug conductivity ntawm 30 microns. Qhov tsis kam yog kwv yees li 55 ohms. Nws kuj tseem tsim nyog sau cia tias cov khoom thauj feem ntau yog stacked raws li kev hloov pauv transceiver. Lub ntsiab feature ntawm xws li pab kiag li lawm nyob rau hauv lub siab pulsation. Nyob rau hauv cov ntaub ntawv no, conductivity yog muab nyob ib ncig ntawm 30 microns.
FET khoom
Cov khoom siv hluav taws xob rau ntawm thaj chaw cuam tshuam transistor tsuas yog ua los ntawm kev sib piv, thiab thyristor yog siv rau hauv hom kho tau. Thaum sib dhos, ua ntej ntawm tag nrho cov, nws tsim nyog xaiv lub capacitor unit, uas plays lub luag hauj lwm ntawm lub tshuab hluav taws xob mem tes. Nyob rau hauv tag nrho, peb lub lim yuav tsum tau hloov kho. Lub resistor yog ntsia tom qab daim hlau. Cov kws tshaj lij hais tias cov khoom siv hluav taws xob rau ntawm thaj chaw cuam tshuam transistor ua rau muaj qhov tsis kam ntawm 40 ohms.
Yog tias cov khoom siv hluav taws xob tau nce ntau, ces lub capacitive capacitor raug teeb tsa. Nws raug nquahu kom siv lub transceiver ncaj qha nrog ob tus neeg sib cuag. Lub relay yog ntsia raws li tus qauv nrog lub regulator. Qhov ntsuas hluav taws xob rau cov khoom ntawm hom no tsis ntau tshaj 400 watts. Cov kws tshaj lij hais tias hauv ob sab phlu yuav tsum tau kho tom qab lub resistor. Yog hais tias peb xav txog lub high-frequency qauv rau300 V fais fab mov, ces tus modulator yuav xav tau ib hom yoj. Hauv qhov no, tetrode tau teeb tsa tom qab thyristor.
Model nrog txuas ntxiv kho tam sim no
Lub tshuab hluav taws xob thauj khoom hluav taws xob nrog kev tswj xyuas tam sim no muaj xws li ib qho thyristor. Capacitors rau cov qauv yuav xav tau ib qho kev nthuav dav nrog cov khoom siv qis. Nws tseem tsim nyog sau cia tias ib qho amplifier tau muab tso rau hauv cov khoom thauj. Cov feem ntau siv yoj analogues, uas muaj ib theem adapter. Lub regulator yog ntsia ncaj qha tom qab lub modulator, thiab qhov ntsuas voltage yuav tsum yog li 300 W.
Ib qho yooj yim hluav taws xob thauj khoom nrog txuas txuas ntxiv tam sim no muaj ob lub contactors los txuas. Thyristors tej zaum yuav siv tau rau ntawm daim hlau. Cov sib piv hauv cov khoom siv tau nruab nrog thiab tsis muaj stabilizers. Hauv qhov no, ntau nyob ntawm qhov ua haujlwm zaus. Yog tias qhov ntsuas no siab tshaj 300 kHz, nws yog qhov zoo dua tsis txhob nruab ib lub stabilizer. Txwv tsis pub, qhov sib faib coefficient yuav nce ntxiv.
TL494 raws li khoom siv
Lub TL494 raws li hluav taws xob thauj khoom yog yooj yim zoo nkauj los dhos. Resistor rau kev hloov kho yog xaiv nyob rau hauv hom kab. Raws li txoj cai, lawv muaj lub peev xwm siab. Thiab lawv tuaj yeem ua haujlwm hauv DC network. Thaum sib dhos tus qauv, thyristor yog siv rau ntawm ob daim hlau. Hluav taws xob pulse load raws li TL494 ua hauj lwm nrog ib theem lossis pulse hom expander.
thawj qhov kev xaiv yog qhov ntau tshaj plaws. Qhov ntsuas hluav taws xob ntawm cov loads pib los ntawm 220 watts. Cov lim yog ntawm tag nrho cov hom, thiab cov conductivity tsis ntau tshaj 4mk. Thaum txhim kho lub regulator, nws yog ib qho tseem ceeb rau kev ntsuam xyuas cov zis impedance. Yog tias qhov ntsuas no tsis tas mus li, ces lub amplifier yog siv rau tus qauv. Contactors raug ntsia nrog thiab tsis muaj adapters. Cov zis hluav taws xob hauv Circuit Court yog kwv yees li 300 watts rau cov khoom thauj. Thaum cov cuab yeej qhib, qhov tam sim no feem ntau nce. Qhov no tshwm sim vim cua sov ntawm lub modulator. Tus neeg siv tuaj yeem zam qhov teeb meem no los ntawm kev txo qhov rhiab heev.
100W Models
Electronic load (daim duab qhia hauv qab) rau 100 W suav nrog kev siv ob lub thyristors channel. Lub transistor hauv cov qauv yog feem ntau siv los ntawm kev nthuav dav. Nws muaj ib tug conductivity ntawm txog 5 microns. Nws tseem tsim nyog sau cia tias muaj cov loads ntawm lub relay. Lawv zoo tshaj plaws rau cov khoom siv hluav taws xob muaj zog. Rau kev sib dhos tus kheej, yoj sib piv yog siv ntxiv. Cov khoom siv hauv tsev muab qhov hluav taws xob tsis pub ntau tshaj 300 V, thiab kev khiav hauj lwm zaus pib ntawm 120 kHz.
200W units
Lub 200 W hluav taws xob thauj khoom suav nrog ob khub ntawm thyristors, uas txuas nrog ua khub. Ntau tus qauv siv wired low zaus sib piv. Nws tseem tsim nyog sau cia tias tus modulator yuav tsum tau sib sau ua ke qhov kev hloov kho. Amplifiers yog siv los ua kom cov txheej txheem tsim cov teeb liab. Cov ntsiab lus no tsuas yog ua haujlwm los ntawm cov ntxaij lim dej.
Lub transceiver yuav tsum muab ntsia tom qab daim hlau. Nyob rau hauv cov ntaub ntawv no, lub load voltage yog kwv yees li 400 V. Tus kws tshaj lijlawv hais tias cov khoom siv ntawm wired transceivers tsis ua haujlwm zoo. Lawv muaj tsawg conductivity, muaj teeb meem nrog overheating. Yog tias pom qhov voltage surges, nws tsim nyog hloov qhov sib piv. Lwm qhov teeb meem yuav yog tus resistor.
Yuav ua li cas thiaj ua tau ib lub 300W?
300 W hluav taws xob thauj khoom suav nrog kev siv ob theem-hom thyristors. Qhov ntsuas hluav taws xob ntawm cov khoom siv yog kwv yees li 230 watts. Lub overload yam nyob rau hauv cov ntaub ntawv no nyob ntawm seb tus conductivity ntawm tus piv. Yog tias koj sib sau cov cuab yeej no koj tus kheej, koj yuav xav tau lub channel-hom modulator. Lub tshuab hluav taws xob yog siv los txhim kho lub ntsiab.
Regulators feem ntau siv nrog lub adapter. Lub relay yog ntsia tsawg-kuj hom. Lub dispersion coefficient rau kev hloov kho hauv tsev yog kwv yees li 80%. Nws tseem tsim nyog sau cia tias cov contactors siv yog qhov tsis tshua muaj siab. Yuav ua li cas los xyuas cov load ua ntej hloov? Koj tuaj yeem ua qhov no nrog tus ntsuas. Cov zis hluav taws xob rau cov khoom siv hauv tsev feem ntau yog 50 ohms. Yog tias peb xav txog cov qauv nrog ib tus neeg sib piv, ces qhov ntsuas no yuav raug qis dua.
qauv rau 10 A units
Cov khoom siv hluav taws xob rau 10 A lub zog hluav taws xob tau sau los ntawm kev nthuav dav thyristor. Transistors feem ntau siv ntawm 5 pF, uas muaj cov conductivity tsawg. Nws kuj tseem tsim nyog sau cia tias cov kws tshaj lij tsis pom zoo kom siv cov kab analogues. Lawv muaj me ntsis rhiab heev. Lawv zoo heev ua rau cov dissipation factor. Contactors yog siv los txuas rau chav tsev. modulators feem ntausiv nrog adapters.
Yog tias peb xav txog qhov Circuit Court ntawm lub capacitor unit, ces lawv muaj qhov nruab nrab zaus ntawm 400 kHz. Hauv qhov no, qhov rhiab heev tuaj yeem hloov pauv. Contactors feem ntau tsau tom qab lub modulator. Stabilizers yuav tsum tau siv rau ntawm ob daim hlau. Nws tseem tsim nyog sau cia tias tus ncej resistor yuav tsum tau sib sau ua ke qhov kev hloov kho. Nws pab tau kom ceev ceev ntawm mem tes tiam.
Devices rau 15 A units
Cov khoom siv ntau tshaj plaws yog rau 15 A units. Lawv siv cov resistors qhib. Hauv qhov no, cov transceivers yog siv nrog cov polarity sib txawv. Tsis tas li ntawd, lawv txawv ntawm rhiab heev. Qhov nruab nrab, qhov hluav taws xob ntawm cov khoom siv yog 320 V. Cov qauv sib txawv ntawm cov conductivity ntawm ib leeg. Rau lub hom phiaj ntawm kev sib dhos tus kheej, kev sib piv yog siv rau ntawm cov tswj hwm. Stabilizers tau txuas ua ntej pib lawv qhov kev teeb tsa.
Cov kws tshaj lij hais tias cov khoom nthuav dav tuaj yeem ntsia tau los ntawm lub hauv ob sab phlu. Input conductivity yuav tsum tsis pub tshaj 6 microns. Thaum txhim kho lub regulator, tus sib piv yog ua tib zoo ntxuav. Yog tias koj sib sau ua qauv yooj yim, ces tus modulator tuaj yeem siv ua hom inverter. Qhov no yuav ua rau kom lub dispersion coefficient. Qhov ntsuas hluav taws xob yog qhov nruab nrab ntawm 200 V. Qhov kev tso cai fais fab tsis pub dhau 240 W. Nws tseem tsim nyog sau cia tias cov ntxaij lim dej ntawm ntau hom yog siv rau kev thauj khoom. Nyob rau hauv cov ntaub ntawv no, ntau nyob ntawm tus conductivity ntawm tus piv.
Daim duab kos rau 20 A blocks
Electronicload (daim duab qhia hauv qab) rau 20 A units yog raws li binary resistors. Lawv tuav ruaj khov siab conductivity. Qhov rhiab heev nyob rau hauv cov ntaub ntawv no yog kwv yees li 6 mV. Qee qhov kev hloov kho yog qhov txawv ntawm qhov siab tshaj qhov ntsuas. Relays rau cov qauv yog siv nyob rau hauv nthwv dej transistors. Cov sib piv yog siv los daws cov teeb meem kev hloov pauv. Expanders feem ntau yog hom theem. Thiab lawv tuaj yeem muaj ob peb adapters. Yog tias tsim nyog, lub cuab yeej tuaj yeem sib sau ua ke ntawm nws tus kheej. Rau qhov no, ib chav tsev capacitor yog siv.
Qhov ntsuas hluav taws xob rau cov khoom siv hauv tsev pib ntawm 300 W, thiab qhov nruab nrab zaus yog 400 kHz. Cov kws tshaj lij tsis qhia txog kev siv cov kev sib piv tsis ntev los no. Regulators yog siv nrog daim hlau. Ib qho insulator yuav tsum tau nruab rau qhov sib piv. Yog tias peb xav txog kev thauj khoom ntawm ob lub thyristors, ces cov lim dej siv nyob ntawd. Qhov nruab nrab, lub capacitance ntawm lub module yog 3 pF. Lub dispersion Performance index rau cov qauv hauv tsev pib los ntawm 50%. Thaum sib sau ua ke cov cuab yeej, tshwj xeeb yuav tsum tau them nyiaj rau lub adapter rau kev txuas mus rau lub hwj chim mov. Contactors yog xaiv hom ncej. Lawv yuav tsum tiv taus cov overloads loj thiab tsis overheat.
AMETEK cov khoom siv
Loads ntawm hom no yog qhov txawv los ntawm kev ua haujlwm tsawg. Lawv zoo heev rau 15 A cov khoom siv hluav taws xob, Ntawm cov qauv ntawm lub tuam txhab no, muaj ntau yam kev hloov kho mem tes. Lawv tus kheej overload tsis siab, tab sis ib tug siab pulse tiam tus nqi yog muab. Cov kws tshaj lijUa ntej tshaj plaws, lawv nco ntsoov qhov kev ruaj ntseg zoo ntawm cov khoom. Lawv siv ob peb lub lim dej. Lawv cuam tshuam nrog theem suab nrov uas cuam tshuam cov teeb liab.
Yog tias peb xav txog cov qauv siv zaus, lawv muaj ob peb thyristors. Nws tseem tsim nyog sau cia tias muaj kev hloov kho ntawm wired sib piv ntawm lub khw. Raws li kev thauj khoom ib txwm muaj ntawm hom no, koj tuaj yeem sib sau ua ke cov cuab yeej zoo tshaj plaws rau cov khoom siv hluav taws xob sib txawv. Cov qauv muaj cov stabilizers zoo heev thiab rhiab heev transistors.
Ntawm ntawm Sorensen series
Tus qauv hluav taws xob thauj khoom ntawm cov koob no suav nrog thyristor thiab cov kab sib piv. Ntau cov qauv yog tsim nrog cov kav hlau txais xov uas muaj peev xwm ua haujlwm ntawm cov khoom siv siab. Nws kuj tseem tsim nyog sau cia tias kev hloov kho hauv chav kuaj nyob hauv khw. Lawv muaj cov coefficient tsawg dispersion. Cov qauv yog feem ntau siv ntawm hom hloov pauv. Qhov taw qhia overload yog nyob rau nruab nrab 20 A. Cov txheej txheem tiv thaiv yog siv nyob rau hauv cov chav kawm sib txawv. Muaj cov qauv impulse ntawm cov khoom txee. Lawv zoo haum rau kev sim cov khoom siv hluav taws xob hauv computer. Kev nthuav dav hauv cov khoom siv yog siv nrog daim hlau.
ITECH series qauv
Loads ntawm no series yog txawv los ntawm high conductivity. Lawv muaj kev ruaj ntseg zoo. Hauv qhov no, ntau lub transceivers tau siv. Cov khoom siv hluav taws xob rau cov khoom siv hluav taws xob ua haujlwm nruab nrab ntawm qhov zaus ntawm 200 kHz. Nyob rau hauv rooj plaub no, lub overload yog 4 A. Amplifiers nyob rau hauv cov khoom siv nrog kev sib cuag adapters. Thyristors yog siv rau theem lossis hom code. Ntawm cov qauv ntawm no series muaj programmable hloov kho. Lawv zoo haum rau kev sim cov khoom siv hluav taws xob hauv computer. Transceivers tuaj yeem pom nrog lossis tsis muaj qhov nthuav dav.
Loads raws li IRGS4062DPBF
Ua ib qho hluav taws xob thauj khoom nrog koj tus kheej txhais tes raws li qhov transistor no yooj yim heev. Cov qauv txheej txheem ntawm cov qauv muaj xws li ob lub capacitor units thiab ib qho expander. Nws yuav tsum raug sau tseg tam sim ntawd tias cov qauv ntawm cov chav kawm no zoo haum rau 10 A cov khoom siv hluav taws xob, qhov ntsuas hluav taws xob rau cov khoom thauj yog 200 W. Cov lim rau cov khoom siv yog xaiv tsawg zaus. Lawv muaj peev xwm ua hauj lwm nyob rau hauv hnyav loads.
Ua ntej tshaj plaws, thaum sib sau ua ke, lub thyristor raug teeb tsa, thiab siv tau ntau hom kev sib piv. Lub transistor yog ncaj qha ntsia nrog ib tug soldering hlau. Yog hais tias nws cov conductivity ntau tshaj 5 microns, ces nws yog tsim nyog los txhim kho lub dipole lim nyob rau hauv lub pib ntawm Circuit Court. Cov kws tshaj lij hais tias qhov hluav taws xob thauj khoom ntawm IRGS4062DPBF transistor tuaj yeem ua tiav nrog cov sib piv tsis sib xws. Txawm li cas los xij, lawv muaj qhov cuam tshuam loj heev.
Nws tseem tsim nyog sau cia tias cov qauv hauv cov koob no tsuas yog tsim nyog rau DC circuits. Qhov tso cai tshaj qhov ntsuas ntawm cov khoom siv yog 5 A. Yog tias peb xav txog cov khoom siv ntawm cov mem tes sib piv, ces lawv muaj ntau qhov zoo. Ua ntej ntawm tag nrho cov, lub siab zaus catches lub qhov muag. Nyob rau tib lub sijhawm, qhov kev tawm tsam ntawm cov khoom siv qhia pom ntawm qib 50 ohms.
Lawv tsis muaj teeb meem nrog kev coj ua thiab lub zog surges. Tso cai Stabilizerssiv ntau hom. Txawm li cas los xij, lawv yuav tsum ua haujlwm hauv DC Circuit Court. Kuj tseem muaj kev hloov kho yam tsis muaj capacitors ntawm lub khw. Lawv dispersion coefficient yog kwv yees li 55%. Rau cov khoom siv ntawm chav kawm no, qhov no me me heev.
KTC8550 raws li khoom siv
Transistor database loads muaj nuj nqis heev ntawm cov kws tshaj lij. Cov qauv yog qhov zoo rau kev sim me me fais fab units. Qhov tso cai tshaj qhov taw qhia yog feem ntau 5 A. Cov qauv yuav siv cov kev tiv thaiv sib txawv. Thaum sib sau ua ke cov kev hloov kho, nws raug tso cai siv binary modulators nrog ib tug conductivity ntawm 4 microns. Yog li, cov khoom siv yuav tso tawm ntau zaus ntawm 300 kHz.
Yog tias peb tham txog qhov tsis txaus, nws tsim nyog hais tias qhov kev hloov kho tsis tuaj yeem ua haujlwm nrog 10 A cov khoom siv hluav taws xob. Overheating ntawm lub capacitor kuj yuav ua rau nws tus kheej xav. Yuav kom daws tau qhov teeb meem no, expanders yog ntsia rau ntawm lub loads. Triodes feem ntau yog siv nrog ob daim hlau thiab ib qho insulator.
