Cov txheej txheem:
Video: Hloov kho VU Meter Backlight rau Xiav Led Siv Qub CFL Qij Qhov Chaw.: 3 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25
Thaum kho lub qub Sony TC630 reel-to-reel daim kab xev kaw, Kuv pom ib qho ntawm cov iav qhov muag rau VU meter rov qab lub teeb tau tawg.
Tsis muaj cov xim pleev xim ua haujlwm raws li cov hlau lead tau tawg tawm hauv qab iav saum npoo. Qhov hloov pauv nkaus xwb kuv tuaj yeem pom hauv zos yog 3V qhov muag teeb rau lub Mini Maglite AA teeb, ntxiv rau qhov kim thiab nyuaj rau tau txais, tsis muaj kev lees paub tias lawv tseem yuav ci txaus.
Qhov ntsuas hluav taws xob pub rau Vu meter qhov muag teev ntawm Sony yog 1.8V AC thiab txawm tias ib qho me me 6v DC iav qhov muag ci ci liab.
Rov qab nco txog me me smt joule tub sab kuv tau ua qee xyoo dhau los, Kuv muaj lub tswv yim kom pom lub VU ntsuas nrog xiav leds siv tus tub sab joule hla dhau 3.3V rau pem hauv ntej qhov hluav taws xob ntawm lub teeb xiav.
Thawj kauj ruam yog txhawm rau kho AC nrog 4 diodes ib lub 'meter' thiab tom qab ntawd joule tub sab DC mus rau tus coj.
Rau qhov no koj yuav xav tau 2 qhov muag teev CFL vim tias muaj 1 lub txiv ntseej ferrite core rau CFL.
Kauj Ruam 1: CFL Tshooj rau Joule Thief
Muaj tus tswv ntawm cov khoom siv tau hauv paus ntawm CFL, peb xav tau cov tub ntxhais ferroid ferrite, 1N4007 diodes thiab qee cov tooj liab hlau.
Muaj qhov me me ntxaiv ferrite, tab sis kuv tsis tau siv lawv hauv joule tub sab, yog li tsis tuaj yeem ua pov thawj rau lawv txoj haujlwm.
Kuv xub siv 13002S TO92 NPN transistors tab sis pom lawv tsis ua haujlwm txhua, tej zaum vim yog tus nqi qis, yog li kuv hloov lawv nrog BC337's.
Lwm qhov kev hloov pauv hauv CFL's yog SOT32 13003 NPN hloov pauv sai uas yog qhov zoo rau 1.5A txuas ntxiv tam sim no.
Kuv muaj kev xav tias yog qhov me me TO92 tus tsis ua haujlwm, tsis yog qhov loj dua.
Kuv suav 8 1N4007 diodes hauv ib CFL.
Txhua lub hauv paus siv 20 tig ntawm ob npaug hla cov tooj liab tooj liab ntxhib ntxhib 1.2m ntev.
Daim duab qhia chaw tau pom ntawm BigClives tus xaib. Nws kuj ua Youtube.
Kauj ruam 2: Qhib Sony
Tshem tawm lub phaj ntsej muag hauv qab, xaub tawm lub vu meters thiab sau daim ntawv 4 ua nyob rau tom qab ua ntej desoldering.
Cov teeb pom kev rov qab yog sab saum toj 2, nrog rau hauv qab 2 yog cov tswv yim rau lub zog txav.
Kuv txiav tawm qhov taub ntawm cov coj nrog ib sab txiav thiab xuab zeb saum npoo los tsim kom muaj qhov ci ntau dua.
Kauj ruam 3: Ua tiav
Lub teeb kaw suab liab sib piv tau zoo nrog lub ci ci ntawm vu meters uas yog qhov ci txaus los nyeem lub ntsuas hauv chav tsaus.
Kuv zoo siab nrog qhov tshwm sim kawg thiab nws hloov kho qhov zoo ib yam ntawm cov qub reel rau reel daim kab xev los ntawm xyoo 1971.
Pom zoo:
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