LM3916 LED Chip Lwm Yam: 7 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:28

Hmoov tsis zoo LM3916 nti tau txiav lawm. LM3916 yog ib qho kev sib txuas ua ke uas nkag siab txog qib sib piv thiab nws muaj peev xwm tsav tau kaum lub LEDs, LCDs lossis lub tshuab nqus plua plav tawm.

Hauv cov lus qhia no peb yuav tsim kev sib tw hloov pauv kom ua raws LM3916 nti los tsav 10 kab teeb LED.

Kauj ruam 1: LM3916 Schematic

Peb pib los ntawm saib LM3916 cov txheej txheem los saib seb nws ua haujlwm li cas. Los ntawm Schematic no peb tuaj yeem tshuaj xyuas nws thiab pib tsim cov khoom siv hluav taws xob uas yuav ua raws li txoj haujlwm.

Kauj Ruam 2: LT Spice Testing

Peb siv txoj haujlwm LTspice los tsim thiab ntsuas qhov Circuit no kom ntseeg tau tias nws ua haujlwm raug.

Txhawm rau ua kom yooj yim peb cov txheej txheem ntawm cov nti, peb muaj op amps khiav los ntawm LED thaum cov khoom tsis hloov pauv yog qhov hluav taws xob loj dua li cov inverted input. Hauv thawj daim phiaj xwm txheej (hauv cov lus qhia no), LED tau khiav mus rau hauv op-amp thiab tom qab ntawd mus rau hauv av.

Kauj Ruam 3: Kauj Ruam 1

Los ntawm Circuit Court peb tsim los ntawm LTspice peb muaj peev xwm pib tsim cov Circuit Court ntawm lub rooj mov ci. Tab sis ua ntej peb pib peb yuav tsum paub tseeb tias peb paub yuav ua li cas thiaj paub lub tswv yim ntawm lm358 op amp uas tuaj yeem pom ntawm

Tam sim no peb tuaj yeem pib los ntawm kev sib txuas kom raug ntawm op amps. Qhov peb yuav tsum tau ua yog qhia saum toj no, peb txuas txhua V+ ua ke thiab cia 5 volts ntws nruab nrab ntawm lawv. Peb kuj txuas tag nrho V- rau hauv av. Thaum kawg peb txuas ob lub tswv yim zoo hauv txhua op amp ua ke rau txhua 5 op amps.

Kauj Ruam 4: Kauj Ruam 3

Tom ntej no peb yuav tsum tsim tus ntaiv tsis kam. Txhawm rau ua qhov no peb txuas 10 tus tiv thaiv ua ke. Hauv qab ntawm tus ntaiv koj xav tsaws nws thiab nyob rau sab saum toj ntawm tus ntaiv koj xav txuas nws mus rau 5 volts. Tom qab txhua qhov teeb tsa no koj xav kom ntseeg tau tias nws ua haujlwm tau zoo los ntawm kev siv qhov hluav taws xob ntawm txhua qhov kev tawm tsam. Yog tias nws ua haujlwm tau zoo koj yuav tsum tuaj yeem pom tias qhov hluav taws xob tau los ntawm qhov hluav taws xob qis heev hauv qab mus rau 5 volts nyob rau sab saud.

Thaum koj lees paub tias koj tus ntaiv ua haujlwm raug, koj tuaj yeem txuas txhua lub ntsiab lus ntawm tus ntaiv mus rau qhov tsis zoo ntawm txhua qhov op amp. Nco ntsoov tias txhua qhov kev tawm tswv yim tsis zoo yuav tsum txuas nrog lawv tus kheej cov neeg tawm tsam. Kuj yuav ua kom yooj yim dua koj yuav tsum txuas hauv qab ob tus tiv thaiv mus rau qhov kawg op amp thiab nce los ntawm qhov ntawd.

Kauj Ruam 5: Kauj Ruam 4: Teeb LED Teeb Teeb

Raws li tau hais los saum toj no koj xav teeb tsa kab teeb kom txhua ntawm 10 LEDs sab tsis zoo txuas rau hauv av.

(Daim ntawv ceeb toom tias sab saud sab saud muaj tus thais… uas qhia tias sab twg ntawm lub bar muaj cov tswv yim/cov ntsuas hluav taws xob siab.)

Kauj Ruam 6: Kauj Ruam 5

Thaum kawg koj xav txuas tag nrho cov txiaj ntsig ntawm op amp mus rau qhov zoo ntawm LEDs.

Kauj Ruam 7: Cov Lus Cim Kawg …

Thaum kawg, koj yuav tsum muaj peev xwm nce tus lej LEDs ntawm koj lub bar los ntawm kev nce qhov hluav taws xob tau muab rau koj cov op amp inputs. Txhawm rau siv nrog lwm cov khoom siv hluav taws xob, koj yuav muaj peev xwm ntxiv txoj hauv kev los tswj cov qib hluav taws xob.

Hauv peb txoj haujlwm, peb tau ntxiv txog 5k Ohms ntawm kev tiv thaiv rau peb cov tswv yim txhawm rau txo qis pes tsawg volts peb cov pob qhov rooj nkag rau op amps. Koj yuav xav tau ntxiv lwm yam, xws li tsis, txhawm rau kom tau txais tus cwj pwm LED uas koj xav tau.

Vam tias qhov kev qhia no tau pab! Ua tsaug!