USB Hloov Pauv Hloov Voltage Fais Fab Khoom: 7 Kauj Ruam (nrog Duab)

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Kuv tau muaj lub tswv yim rau USB siv lub zog hloov pauv hloov tau rau qee lub sijhawm. Raws li kuv tau tsim nws, Kuv tau ua nws me ntsis ntau yam tso cai rau tsis yog siv USB nkaus xwb, tab sis txhua yam los ntawm 3 VDC txog 8 VDC ntawm USB ntsaws lossis ntawm txiv tsawb ntsaws ntsaws. Qhov tso tawm siv hom jack koj yuav pom hauv cov phab ntsa wart thiab ob lub txiv tsawb ntsaws. Yog tias koj pub 5 volts rau hauv nws, koj tuaj yeem hloov qhov tso tawm los ntawm 1.3 Volts mus rau 20 Volts maj mam ntsaws nrog qhov qis qis mus txog 200 mA. Pem hauv ntej nta cov duab digital uas qhia txog qhov hluav taws xob thiab tam sim no mus rau lub nra. Hauv daim duab saum toj no, Kuv tab tom muab lub mini oscilloscope nrog 9 volts ntawm 120mA los ntawm 5 volt USB muab los ntawm lub laptop USB davhlau ya nyob twg.

Khoom siv:

Qhov

(1) 240 ohm resistor, 1/4 watt

(1) 67 k resistor, 1/4 watt

(2) 4.7 k resistors 1/4 watt

(3) 1 k resistors, 1/4 watt

(3) 2N3904 transistors

(1) IRF520 Mosfet lossis sib npaug

(2) 1N914 hloov diodes

(1) 1N4007 diode

(2).01 uF ceramic capacitors (schematic hais tias 8 nF lossis.008 uF tab sis.01 uF yog qhov yooj yim kom tau)

(2) 10 uF electrolytic capacitors, 50 volt

(1) 470 uF electrolytic capacitor 50 volt

(1) 56 uH inductor (tuaj yeem raug mob ntawm lub qhov me me yog tias xav tau)

(1) 100k trim lauj kaub

(1) 5k 1/2 watt potentiometer, tawm taper

(1) LM317 IC tswj qhov hluav taws xob IC nti

(4) txiv tsawb txiv neej (txiv neej)

(1) tus qauv loj USB nkaus (txiv neej)

(1) digital voltmeter ammeter module

(1) Vaj Tsev

(1) Perf lossis pawg thawj coj saib qauv

(1) pob qhov rooj dub nrog lub hau ntswj

Thaum tshav kub kub ntsws tubing

Ntau xim ntawm hookup hlau

Spade txuas (ntau qhov ntau thiab tsawg)

Cov cua sov thiab cov khoom sib xyaw ua kua rau LM317

Cov cuab yeej

Soldering Iron, Solder, Hot melt Glue, Drill with drill bit, assorted screwdrivers, different types of small pliers, multimeter and oscilloscope

Kauj Ruam 1: Tau Txais Cov Khoom

Kuv txhob txwm siv cov khoom uas yooj yim mus nrhiav thiab tuaj yeem khaws tawm ntawm cov laug hluav taws xob. LM317 IC yog ntau heev thiab 2N3904 transistors yog lub hom phiaj dav dav thiab ntau hom sib txawv tuaj yeem hloov pauv tau. Mosfet kuj tseem muaj ntau heev thiab lwm hom tuaj yeem siv ua qhov hloov pauv tsuav yog qhov hloov pauv yog N-channel Mosfet thiab muaj cov qhab nia zoo sib xws. Cov inductor tsis tseem ceeb thiab ntau hauv thaj tsam ntawm 50 txog 200 nH tuaj yeem siv tau. Rau lub hom phiaj no, Kuv khaws lawv los ntawm kev siv CFL lub teeb tsav tsheb. Txhua hom phiaj xwm phiaj xwm tuaj yeem siv tau. Kuv muaj qhov no ntawm tes tab sis dub dub pheej yig dua yog qhov zoo tshaj. Raws li kev siv perf board, nws yog kuv tus kheej xaiv rau qhov yooj yim uas tuaj yeem hloov kho.

Kauj Ruam 2: Txoj Kev Xav Tom Qab Lub Circuit Court

Cov duab waveform saum toj no qhia txog kev nce qib ntawm cov nthwv dej. Thawj qhov qhia txog kev yoj ntawm qhov tso tawm ntawm lub astiv multivibrator nyob rau sab saum toj ntawm sab xis 1N914 diode. Qhov thib ob qhia txog kev yoj ntawm lub qhov rooj ntawm IRF520 thiab qhov kawg tau qhia txog qhov nthwv dej ntawm qhov chaw ntawm IRF520.

Lub Circuit Court siv ob lub transistor astable multivibrator khiav ntawm 18 kHz. Cov xwm txheej nthwv dej tawm los ntawm sab saum toj ntawm ib ntawm ob qho ntawm 1N914 diodes. Cov transistors yog ib txwm muaj 2N3904's. Cov hluav taws xob hluav taws xob qis qis tau txhawb nqa los ntawm lwm 2N3904 transistor uas yog cov chav kawm tsis ncaj ncees C. Cov transistor txhawb nqa cov yoj square yoj los ntawm qhov xwm txheej ntawm kwv yees li 10 qhov twg dhau los ntawm lub tshuab hluav taws xob hluav taws xob thiab 100k lub zog ua ntej tau thov rau lub qhov rooj ntawm IRF520 Mosfet. Lub Mosfet yog xaim raws li kev nce qib chopper nrog lub hauv paus qhov chaw muaj 56 uH choke rov qab mus rau 5 volt mov. Raws li Mosfet tau qhib thiab tom qab ntawd kaw sai, lub tshuab nqus hlau hauv lub tshuab hluav taws xob tau tsim thiab tom qab ntawd ua rau rov ua EMF rov qab. Qhov rov qab EMF qhov hluav taws xob tau tso cai ntws los ntawm 1N4007 diode thiab tau ua ntu zus nrog qhov hluav taws xob. Qhov no tsub nqi ntxiv rau ob qhov hluav taws xob hla 470 uF electrolytic Ua Ntej ntawm lub tshuab hluav taws xob yog LM317 tus tswj hluav taws xob hluav taws xob nti teeb tsa raws li lub zog hloov pauv tau hloov kho los ntawm 5k lub zog ntsuas. Qhov rho tawm qhov hluav taws xob tau kho tau los ntawm nruab nrab ntawm 1.3 volts thiab 20 volts. Ib lub voltmeter digital thiab ammeter tau txuas rau hauv Circuit kom muab qhov hluav taws xob kom raug thiab nyeem tam sim no ntawm lub vaj huam sib luag pem hauv ntej.

Kauj Ruam 3: Tsim Astable Multivibrator thiab Saib Yog Nws Ua Haujlwm

Muab Astable Multivibrator ua ke zoo li hauv daim duab. Hwj chim nrog 5 volts thiab cov nthwv dej ntawm tus sau ntawm lub transistor thib ob yuav tsum zoo li sawtooth hauv daim duab thib ob nrog zaus yog kwv yees li 18 kHz.

Kauj Ruam 4: Ntxiv Tsis/amplifier thiab Boost Converter Sections

Thaum nws tau txiav txim siab tias lub astiv multivibrator ua haujlwm tau zoo, koj tuaj yeem ntxiv ntu ntu transistor. Lub 100 K luas lauj kaub tau ntxiv los teeb tsa qib ntawm cov teeb liab nkag mus rau Mosfet. Tom qab teeb tsa Mosfet, thaum ua kev tiv thaiv kev tiv thaiv zoo li qub, teeb tsa lub diode thiab cov hluav taws xob hluav taws xob. Ua ntej koj teeb tsa cov ntu no koj yuav xav sim nrog muab lawv tso rau ntawm pawg kws sim thaum sim ntau yam txiaj ntsig ntawm inductor. Kuv tau sib cais ib pawg ntawm CFL's thiab pom cov inductors kom zoo rau lub hom phiaj no, tshwj tsis yog tias lawv tau kub nrog ntau dua 100 mA hla lawv. Kuv pom cov inductor no ua kom zoo tshaj plaws vim nws siv cov xaim tuab dua. Koj tuaj yeem siv cov inductors los ntawm 50 txog 200 uH thiab koj yuav tau txais txiaj ntsig zoo ntawm qhov zaus no. Kuv xav kom tsav tsheb Mosfet los ntawm lub tshuab hluav taws xob ua haujlwm thaum sim. Mus los ntawm.5 volt ncov mus rau qhov siab txog 5 volts ncov rau ncov. Muab lub voltmeter hla mus rau 470 uF capacitor thiab saib qhov ntsuas hluav taws xob tsim nyob thoob plaws lub capacitor rau ntau zaus cov hluav taws xob nkag. Unloaded, kuv tau nce mus txog ntau dua 30 volts. Nco ntsoov tias koj li 470 uF electrolytic tau ntsuas tsawg kawg 50 volts.

CFL-Compact Fluorescent Teeb

Kauj Ruam 5: Ntxiv LM317 Circuit

Thaum koj txaus siab rau qhov ua tau zoo ntawm Mosfet txhawb kev hloov pauv ntu koj tuaj yeem teeb tsa LM317 thiab nws yog cua sov. Kuv pom tias LM317 tau kub, xav tau lub rhaub dej kub tab sis tsis yog Mosfet. Yog tias cov kauj kub, koj tuaj yeem ua lub rhaub dej kub los ntawm cov ntawv txhuas thiab qee cov kua nplaum. Kuv siv daim me me ntawm cov ntawv hlau khoov ib ncig ntawm lub xoob xoob thiab lo rau hauv qhov chaw nrog cov kua nplaum kub yaj.

Kauj Ruam 6: Laum Qhov Rooj, Txuas Cov Txiv Tsawb Jacks thiab Mount Digital Display ntawm Pem Hauv Ntej

Laum qhov nyob rau hauv lub vaj huam sib luag rau pem hauv ntej rau lub hwj chim (1), (4) qhov rau txiv tsawb thiab (2) rau USB cable thiab adapter hom ntsaws. Mount lub rooj tsav xwm hauv kab hauv txoj haujlwm qhia hauv daim duab thiab xaim txhua yam ua ke. Kuv pom tias cov txiv tsawb ntsaws uas kuv siv tau ua haujlwm zoo dua nrog cov txiv ntseej txuas nrog lawv. Qee lub npe muaj cov kab txuas txuas nyob tom qab yog li nws nyob ntawm hom txuas uas koj siv.

Kuv tau ruaj lub rooj tsavxwm ntawm lub hauv paus ntawm rooj plaub nrog me ntsis kub yaj kua nplaum kom tshem tau yooj yim yog tias kuv xav hloov kho rau hauv Circuit Court. Lub hauv ntej ntawm cov yas dub tau txiav kom haum rau lub ntsej muag 'meter' lub ntsej muag. Nws tau ruaj nrog kub yaj kua nplaum. Thaum tag nrho cov jacks nyob hauv qhov chaw nyob tom qab, lub vaj huam sib luag kuj tseem nyob hauv qhov chaw nrog cov kua nplaum kub yaj.

Kauj Ruam 7: Rooj Sib Tham Kawg thiab Xeem

Cov khoom kawg rau xaim rau hauv lub cuab yeej yog qhov ntsuas hluav taws xob/tam sim no. Tus qauv los nrog cov xaim dub thiab xaim dawb, cov no mus rau cov khoom siv hluav taws xob. Cov kab mob txiv kab ntxwv mus rau qhov nkag siab qhov tso tawm qhov hluav taws xob zoo. Muaj ob txoj hlua dub thiab liab tuab, cov no mus rau qhov tam sim no. Cov no mus ua ntu nrog qhov tso tawm kom qhia rau koj paub ntau npaum li cas tam sim no tau kos los ntawm koj lub nra. Cov ntsuas tsis sau npe yog tias koj tso lub polarity rov qab. Kuv pom tias vim qee qhov tam sim no tsis tau nyeem kom raug rau kuv yog li kuv yuav tsum tau sim nrog cov hlau sib txawv thiab tuab. Thaum kuv tau txais kev nyeem tam sim no kom raug, Kuv tau siv cov xov hlau ncaj qha mus rau lub dav hlau ntawm tus qauv, tshem tawm cov kev sib txuas uas tau muab. Qhov no yuav yog qhov teeb meem nrog tsuas yog tus qauv uas kuv tau siv.

Cov cuab yeej no yuav pib ua haujlwm nyob ib puag ncig 3 VDC thiab ntawm qhov ntsuas hluav taws xob no yuav muab rau koj txog 7 volts tso tawm ntawm 60 mA. Nrog 5 volts cov tswv yim, nws yuav muab rau koj siab tshaj 11 volts tawm ntawm 120 mA tsis tu ncua, yam tsis muaj cua sov ib yam ntawm cov khoom. Kev ua kom sov zoo dua yuav ua rau koj muaj dej ntws ntau dua. Qhov no tau zoo nyob hauv thaj tsam uas kuv xav siv nws rau.