Lub DSO138 digital oscilloscope yog muag li DIY pob khoom. Nws yog nyob ntawm ib daim npav luam tawm hauv Circuit Court, thiab TFT LCD zaub txuas nrog nws nrog mezzanine board cais. Lub oscilloscope yog compact, pheej yig heev thiab tib lub sijhawm ntawm kev ua kom zoo txaus. Nws muaj cov haujlwm ua khaws cia nthwv dej waveform, qhov ua haujlwm ntawm kev teeb tsa qhov ntsuas ntawm lub teeb liab tawm tswv yim, automatic, ib-txhaj thiab ib qho kev khiav haujlwm ib txwm. Bandwidth -200 kHz. Kev daws teeb meem voltage - 12 me. Wb saib yuav ua li cas teeb tsa no oscilloscope kom raug thiab sai.
Tsim nyog
- - Teeb nrog digital oscilloscope DSO138;
- - multimeter;
- - tweezers;
- - soldering hlau;
- - ham thiab flux;
- - Cov roj ntsha los yog roj av.
Cov Lus Qhia
Kauj ruam 1
Tsab cai DSO138 tau muag rau hauv daim foos no. Cov khoom siv suav nrog qhov tseeb luam tawm Circuit board nrog SMD cov khoom sib txuas ntawm nws (tseem muaj ib qho version ntawm cov khoom siv uas SMD cov khoom tsis txuas ntxiv), ib lub rooj tsavxwm nrog LCD zaub, lub hnab ntim nrog txuas, ib kab nrog BNC txuas thiab "Khej", nrog rau cov lus qhia ua ke thiab cov lus qhia ntawm kev teeb tsa ua lus Askiv.
Txhawm rau tshem tawm cov khoom siv, peb mus rau kev teeb tsa hluav taws xob ntawm cov xov tooj cua luam tawm.
Kauj ruam 2
Peb yuav txav nruj me ntsis raws li cov lus qhia thiab saib cov lus thov ua ntu zus. Cov khoom siv qis dua tau muab tso ua ntej, tom qab ntawv yog qhov siab tshaj plaws.
Thawj kauj ruam yog mus muag rau lub resistors. Muaj ntau ntawm lawv ntawm no, thiab ntau yam kev ntseeg. Ua zoo saib thaum soldering. Tsis muaj cov yeeb yam tshwj xeeb ntawm no.
Kauj ruam 3
Cov kauj ruam tom ntej (2 thiab 3 raws li cov lus qhia) yog soldering peb da dej thiab ob diodes. Txoj kev ntsuas caj dab yog tib yam, tab sis cov diodes sib txawv, tab sis nyob hauv tib lub tsev. Tsis tas li ntawd, lub diodes yog polarized. Ntawm silkscreen ntawm pawg thawj coj saib, "rho tawm" (cathode) yog qhia los ntawm kab dawb, zoo li ntawm rooj plaub ntawm diodes lawv tus kheej. Yog li ceev faj.
Kauj ruam 4
Tom ntej no, peb muag cov quartz resonator (theem 4 ntawm cov lus qhia) ntawm 8 MHz. Qhov polarity tsis yog qhov tseem ceeb.
Kauj ruam 5
Tom ntej no, peb muab qhov txuas mini-USB txuas rau lub rooj tsavxwm thiab tsib xuab moos khawm (qib 5 thiab 6 ntawm cov lus qhia). Ob tus txuas thiab cov nyees khawm muaj qhov ntev ntawm rooj plaub thiab pins, yog li nws tsis yooj yim sua kom tsis muaj dab tsi.
Kauj Ruam 6
Kauj ruam 7 ntawm kev qhia ntawv yog mus muag rau lub capacitors. Muaj ntau ntawm lawv, thiab muaj ntau yam kev ntseeg dab tsi. Tab sis lawv txhua tus tsis-ncov thiab yooj yim solder. Nco ntsoov rov ua dua tus ua ua ntej tso cov ceg rau hauv qhov cam.
Kauj Ruam 7
Cov kauj ruam tom ntej yog los muag cov LED. Cov hmoov txhuas ntev yog qhov anode, ntxiv rau. Ib lub qhov nrog xwmfab hu rau tom qab yog npaj rau nws.
Kauj ruam 8
Tam sim no nws yog qhov tig ntawm tus txiv neej dawb zog txuas. Peb muab tso nrog nws qhib qhov nyob rau hauv cov kev taw qhia los ntawm lub chaw nruab nrab ntawm pawg thawj coj.
Kauj Ruam 9
Raws li cov kauj ruam 10 thiab 11 ntawm cov lus qhia txuas nrog, peb nruab 2 lub tshuab ត្រង់ស៊ីស្ទ័រ thiab 2 tus ntsuas hluav taws xob ntawm lub rooj tsavxwm. Lawv yog txhua hom sib txawv, tab sis nyob hauv tib lub tsev. Ua tib zoo saib xyuas thaum nruab lawv ntawm lub oscilloscope board. Ua cov hlau lead ua ntej kev teeb tsa thiab tsis txhob overheat lawv nrog soldering hlau.
Kauj ruam 10
Peb nruab ob lub tshuab hluav taws xob muaj zog.
Kauj ruam 11
Peb nce lub inductor loj loj rau lub thawv fais fab.
Kauj ruam 12
Tom ntej no, nruab 6 lub tshuab hluav taws xob. Nws yog ib qho tseem ceeb kom soj ntsuam cov polarity thaum lub sijhawm teeb tsa. Qhov tso zis ntev dua yog ib qho ntxiv. Nws haum rau hauv lub qhov nrog cov square solder ncoo.
Kauj ruam 13
Peb muab lub zog txuas rau ntawm DSO138 oscilloscope board. Nws muaj dav es tuab ua, nws yuav tsum muaj zoo soldered.
Kauj ruam 14
Cov kauj ruam 16 thiab 17 ntawm qhov kev qhia yog los cam cov pin qhov ntsuas thiab cov ntsuas phoo uas sib haum mus rau DSO138 oscilloscope board.
Kauj ruam 15
Nruab peb lub pob taws uas txav tau SW1, SW2 thiab SW3. Tom qab ntawd peb txuas rau BNC txuas. Nws lub cev yog ua los ntawm cov tuab txheej ntawm hlau thiab nyuaj rau solder. Txawm li cas los, koj yuav tsum ham nws zoo heev rau cov ntaub ntawv tiv tauj. Qhov no yog cov tswv yim txuas thiab soldering yuav tsum yog qhov zoo heev. Yog li ntawd, rhaub lub pins tuab ntawm nws qhov teeb meem ntau dua.
Hauv tsab xov xwm tom ntej, peb yuav teeb tsa cov lus ntawm DSO138 oscilloscope board, ua qhov kev kuaj xyuas nws thawj txoj haujlwm thiab teeb tsa.
