USB oscilloscopes yog tsim los taug qab cov teeb liab hluav taws xob hauv Circuit Court. Cov qauv siv ntau yam. Yog tias peb xav txog kev hloov kho ib leeg, ces lawv feem ntau siv los ntsuas cov cuab yeej. Rau lub hom phiaj ntawm kev taug qab gigahertz zaus, lawv tsis haum.
Dual-channel khoom siv los soj ntsuam cov nthwv dej electromagnetic. Cov qauv niaj hnub yog tsim nrog daim kab xev duab. Peb-channel cov cuab yeej tsim nyog rau kev tshawb fawb gigahertz zaus. Yog xav paub ntxiv txog oscilloscopes, koj yuav tsum tau saib daim duab ntawm tus qauv qauv.
Scheme of a simple oscilloscope
Ib yam USB oscilloscope (daim duab qhia hauv qab) suav nrog lub raj hluav taws xob zoo li lub tshuab hloov pauv. Lub expander feem ntau yog siv los ntawm kev hloov pauv hom. Capacitors hauv cov khoom siv yog siv tsis muaj transistors. Yog tias peb xav txog kev hloov kho nrog modulators, ces lawv muaj pentode. Lub rectifier yog siv los txo qhov pib voltage. Cov lim hauv cov khoom siv tau teeb tsa nrog dinistors. Lub rhiab heev ntawm oscilloscope nyob ntawm ntau yam ntawmtransceiver.
ib leeg-channel qauv
Ib tug ib-channel USB oscilloscope yog yooj yim heev los ua. Nyob rau hauv cov ntaub ntawv no, lub cathode ray raj yog ntsia ua ke nrog yoj modulator. Ntau tus kws tshaj lij hais tias qhov bandwidth ntawm lub caij yuav tsum tsis pub ntau tshaj 10 microns. Nws tseem yog ib qho tseem ceeb uas yuav tau siv tetrode los desensitize lub cuab yeej. Lub expander rau oscilloscope yog xaiv raws li ib tug tso zis hom. Qhov ntsuas hluav taws xob ntsuas hluav taws xob ntawm cov khoom yuav tsum yog 20 V.
Qhov siab tshaj plaws ntawm hom expander no tsis pub tshaj 130 Hz. Txhawm rau txhim kho cov ntxaij lim dej, koj yuav tau siv cov hlau nplaum. Cov qauv stabilizers tsis tshua siv. Txhawm rau daws cov teeb meem nrog kev ua kom muaj zog ntawm lub phaj, koj tuaj yeem siv lub converter. Tus qauv Circuit Court ntawm ib leeg-channel oscilloscope tsis ua yam tsis muaj rectifier.
Txoj kev ntawm ob-channel ntaus ntawv
Nrog kev pab los ntawm dipole modulator, koj tuaj yeem ua ob-channel USB oscilloscope nrog koj tus kheej tes. Lub tswv yim ntawm cov cuab yeej muaj xws li ib tug cathode ray raj thiab amplifier. Yog tias peb xav txog cov qauv hloov kho, ces lub rectifier tsis tas yuav tsum tau. Qhov zoo ntawm tus qauv yog qhov ntsuas qhov tseeb.
Txhawm rau txuas lub triode, lub transceiver raug teeb tsa. Tsis tas li ntawd, lub dual-channel USB oscilloscope circuit muaj xws li converters. Lawv raug xaiv rau 20 lossis 25 V. Yog tias peb xav txog thawj qhov kev xaiv, ces capacitors raug tso cai siv hom qhib. Txhawm rau nruab 25 V converter, koj yuav xav tau qhov zooua haujlwm lim. Thaum kawg ntawm kev ua haujlwm, tus maub los tau txuas nrog. Cov zis pins nrog USB chaw nres nkoj txuas nrog los ntawm lub transceiver.
Kev tshuaj xyuas ntawm peb-channel hloov kho
Peb-channel USB oscilloscope tshuaj xyuas los ntawm cov kws tshaj lij tsim nyog tau txais txiaj ntsig zoo. Ua ntej tshaj plaws, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov cuab yeej zoo li no yog qhov kev nyeem ntawv zoo heev. Lawv cov sensors yog siv nrog txawv conductivity. Lub cathode ray raj feem ntau yog ntsia nrog lub amplifier. Rau ntau qhov kev hloov kho, capacitor yog siv yam tsis muaj lim. Yuav kom daws tau cov teeb meem nrog lub zog surges, ib tug pa rectifier yog siv.
Raws li cov kws tshaj lij, qhov tsis zoo ntawm lub oscilloscope yuav tsum tsis pub tshaj 30 ohms. Tsis tas li ntawd, ua ntej qhib qhov kev hloov kho, qhov ntsuas hluav taws xob qhov ntsuas hluav taws xob raug kuaj xyuas. Rau cov qauv yooj yim, nws yuav tsum tsis pub ntau tshaj 35 V. Yuav kom nruab lub triode ntawm tus qauv, lub contactor yog soldered. Ntau lub cuab yeej siv nws yam tsis muaj kev tswj hwm.
Sib dhos 5V ntaus ntawv
Nrog tus pin expander, koj tuaj yeem ua qhov yooj yim DIY USB oscilloscope. Lub tswv yim ntawm cov cuab yeej muaj xws li ib tug cathode ray raj thiab ib tug modulator. Cov lim dej yog siv los daws cov teeb meem hauv network congestion. Controllers yog feem ntau xaiv wired hom. Rau kev ua haujlwm ib txwm ntawm cov capacitors, yuav tsum muaj thyristor. Txhawm rau nruab nws, koj yuav tau siv cov hlau nplaum.
Yog tias koj ntseeg qhov kev tshuaj xyuas ntawm cov kws tshaj lij, ces nws yog qhov zoo dua tsis txhob siv cov khoom sib txuas hauv qhov no. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias tetrodes hauv USB oscilloscopekev teeb tsa raug txwv. Qhov no feem ntau yog vim muaj qhov nce ntxiv hauv qhov tsis zoo. Tsis tas li ntawd, cov qauv nrog cov ntsiab lus no siv hluav taws xob ntau. Kev hloov kho raws li broadband rectifiers yog tsawg. Thaum kawg ntawm kev ua haujlwm, nws yog ib qho tseem ceeb los txhim kho cov kev sib txuas lus tso zis. Qhov chaw nres nkoj USB rau kev sib txuas yog feem ntau ntsia los ntawm lub modulator.
10V Oscilloscopes
Lub 10V oscilloscope Circuit Court suav nrog ob lub xaim hluav taws xob. Yuav kom sib sau cov qauv, nws yog ib qho tseem ceeb rau nruab lub cathode ray tube. Rau ib txwm ua haujlwm ntawm lub sensor, ib qho kev hloov pauv hloov pauv yog siv. Nws yog ntsia rau hauv USB oscilloscope los ntawm winding. Qee qhov kev hloov kho muaj thyristor. Yog tias koj ntseeg qhov kev tshuaj xyuas ntawm cov kws tshaj lij, cov qauv no tsis txawv ntawm qhov tseeb ntawm kev nyeem ntawv. Hauv qhov no, nws yog qhov tsim nyog los xaiv cov neeg sib piv zoo.
Qhov ntsuas ntsuas tam sim no ntawm cov khoom yuav tsum yog tsawg kawg 6.2 microns. Qhov pib rhiab heev ntawm 10 W oscilloscopes fluctuates nyob ib ncig ntawm 30 ohms. Qhov nruab nrab, kev khiav hauj lwm zaus tsis tshaj 130 Hz. Yog tias koj ntseeg tias cov kev tshuaj xyuas ntawm cov kws tshaj lij, cov lim dej dhau los tsis tuaj yeem siv. Ua ntej ntawm tag nrho cov, lawv muab ib tug loj load rau lub capacitors. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias lawv tsis muaj peev xwm tiv taus cov electromagnetic vibrations.
Yuav ua li cas ua 15V qauv?
Ua 15V USB oscilloscope rau lub computer yog qhov yooj yim zoo nkauj. Yuav kom sib sau ua qauv, ib qho kev siv hluav taws xobbeam cev. Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias nws yog qhov tsim nyog los xaiv lub modulator nrog lub adapter. Hauv kev ua lag luam, cov khoom siv tau nthuav tawm ntawm 10 thiab 15 microns. Yog tias peb xav txog thawj qhov kev xaiv, ces capacitors yog siv nrog thyristor.
Qhov ntsuas tsis zoo rau oscilloscopes yog siab tshaj 25 m. Yog tias peb xav txog kev hloov kho nrog 15 micron adapter, ces tsuas yog qhib hom capacitors tuaj yeem siv tau. Npog siv los tiv thaiv electromagnetic cuam tshuam. Cov hloov pauv hauv cov khoom siv ntawm hom no yuav siv tsawg zaus. Rectifiers yog siv los txhim kho kev ntsuas qhov tseeb.
Siv PPR1 series resistors
Oscilloscopes nrog cov ntsuas ntsuas tau xav tau siab. Cov kev hloov kho no raug xa mus rau ib leeg-channel li. Oscilloscopes yog qhov zoo tshaj plaws rau kev kuaj cov khoom siv hluav taws xob. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias lawv yog cov rhiab heev. Yuav ua rau koj tus kheej qauv, koj yuav xav tau ib tug cathode ray raj.
Hauv qhov no, lub modulator yog hom mem tes. Yog tias koj ntseeg tias cov kev tshuaj xyuas ntawm cov neeg siv khoom, ces nws yog qhov tsim nyog los xaiv cov contactors nrog rau hauv ob sab phlu. Txawm li cas los xij, lub rectifier tau muab tso ua ntej lawv qhov kev teeb tsa. Txhawm rau kom pom cov ntawv nyeem kom raug, siv lub kenotron. Txog niaj hnub no, cov cuab yeej no tau tsim ua haujlwm thiab yoj hom.
Yog tias peb xav txog thawj qhov kev xaiv, ces tus tswj hwm yuav tsum tau sib sau ua ke oscilloscope. Kev hloov kho nrog nthwv dej kenotrons yog qhov tsawg heev. Parameterqhov tsis kam ntawm cov khoom siv tsis pub tshaj 33 ohms. Lub teeb liab conductivity qhia rau cov qauv fluctuates nyob ib ncig ntawm 4.5 microns. Nws tseem ceeb heev uas yuav tsum nco ntsoov tias qhov chaw nres nkoj USB tuaj yeem txuas tau los ntawm kev hloov kho.
Kev tshuaj xyuas ntawm cov qauv nrog PPR3 resistors
Oscilloscopes nrog cov ntawv teev cov resistors yog rhiab heev. Nyob rau hauv cov ntaub ntawv no, modulators tsuas yog siv nrog tsawg conductivity. Raws li txoj cai, lawv cov zis voltage parameter tsis tshaj 15 V. Qhov nruab nrab, lub teeb liab reducibility yog 6 microns. Expanders rau cov khoom siv yog xaiv hom mem tes. Txhawm rau sib sau ua ke USB oscilloscope koj tus kheej, koj yuav xav tau lub raj xa hluav taws xob cathode. Tom qab kho nws, lub modulator muab tso rau.
Tus expander yuav tsum tau kho nyob ze ntawm tus piv. Tetrodes yog siv los daws cov teeb meem tsawg zaus. Cov resistors raug ntsia ncaj qha yam tsis muaj hauv ob sab phlu. Thaum kawg ntawm kev ua haujlwm, lub chaw nres nkoj USB yog soldered los txuas cov khoom siv rau lub network. Nrog lub zog surges tam sim ntawd, koj yuav tsum tau nruab ib lub stabilizer. Cov cuab yeej tshwj xeeb tuaj yeem ua haujlwm yam tsis muaj lub suab nrov. Kev sib piv yog siv los txo qhov kub poob.
