Tsaus Ntuj Leds rau Yeej!: 4 Cov Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

CEEV FAJ! LED's BLINKING nrog lub suab paj nruag tuaj yeem ua rau koj mob siab rau!

Cov lus qhia no yog hais txog kev ntsais muag qee qhov LED raws li kev ntaus ntawm cov nkauj!

Lub tswv yim tom qab cov txheej txheem no yog qhov yooj yim heev, thiab lub Circuit Court me me tiag tiag.

Lub ntsiab lus tseem ceeb yog:

1-Tsawg dhau lim rau lub teeb liab tawm tswv yim 2-Ua kom lub zog qhov hluav taws xob qhov tshwm sim no tshwm sim 3-Thov nws mus rau lub hauv paus ntawm transistor!

Yooj yim, huh?

Cov ntaub ntawv:

2x 15K Ohms resistor1x 10K Ohms resistor2x 1K Ohm resistor1x 100K Ohms potentiometer1x 390 Ohms resistor2x 100nF ceramic capacitor1x liab coj (qhia lub zog) 1x Blue coj (muaj xim) 1x LM358N1x Txiv neej 3, 5mm audio jack1x Poj niam 3, 5mm audio jack

Yeem: 1x ob txoj haujlwm hloov 1x100K Ohms potentiometer

Cov kev xaiv uas xav tau no tau siv los ua kom tiav cov Circuit Court, qhov uas koj tuaj yeem tua cov nkauj ntsais muag cov khoom thiab xaiv qhov ci ci ntawm 0-100%. Nws ua ib feem ntawm pawg thawj coj saib kuv tsim, tab sis nws tsis tsim nyog tag nrho rau qhov project protoboard!

Kauj Ruam 1: Txoj Haujlwm

1 - Cov Lim: Tsom ntsoov rau qhov qis zaus (ntaus) Kuv xaiv Sallen – Key topology qis dhau lim lim (Duab 1). Kev txiav tawm zaus yog muab los ntawm "fo" (sib npaug ntawm Duab 2). Los ntawm kev sim qee qhov txiaj ntsig, Kuv pom tias txiav tawm zaus ntawm 100 Hz yog qhov zoo txaus rau hluav taws xob/ntaus suab paj nruag!

Tej zaum koj yuav tsum tau sim qee zaus raws li hom suab paj nruag koj hnov. Koj kuj tseem tuaj yeem xaiv lwm hom lim, cia peb hais tias, siab dhau, ntawm qhab-nees, txhawm rau ntsais tus coj raws li koj xav tau.

Kuv qhov tseem ceeb: R1 = R2 = 15K Ohms C1 = C2 = 100 nF

Koj kuj tseem tuaj yeem pom ntawm daim duab kawg lub ntsiab lus ntawm qhov tau txais cov lim uas kuv tau siv, koj tuaj yeem pom qhov txiav tawm tsawg dua qhov suav, ib puag ncig 60 - 70 Hz! Yog li nco ntsoov tsis ntseeg tsuas yog ntawm qhov kev ua zauv!

2 - Qhov nce: Kuaj qee qhov tso tawm ntawm kuv phau ntawv thiab ntsuas qhov hluav taws xob, Kuv pom tias qhov nce ntawm 100 zaug yuav ua haujlwm rau kuv. Cov hluav taws xob uas kuv muaj ntawm lub ntim qis (ib puag ncig 15 mV rms) ua ke nrog 100 zaug nce yog txaus los tsim tawm 1.5V. Koj yuav tsum ntsuas koj tus kheej qhov ntsuas hluav taws xob thiab suav qhov tsim nyog tau txais kom ua tiav qhov ntsuas hluav taws xob tsawg kawg ib puag ncig 1 txog 1, 5V. Nws kuj tseem nyob ntawm tus transistor koj yuav siv, yog li koj yuav xav hloov koj qhov nce raws nws.

Qhov tau txais yog tau txais nrog qhov yooj yim uas tsis hloov pauv qhov ntsuas hluav taws xob (Duab 3), thiab nws tau suav los ntawm "G" (sib npaug ntawm Duab 4).

Kuv qhov tseem ceeb: Rf = 100K Ohms Potentiometer Rg = 1K Ohm

3 - Tus transistor:

Txog qhov haujlwm no, Kuv siv TIP 122 nrog 1K Ohm puag resistor raws li Duab 5.

Kauj ruam 2: Circuit Court

Kev koom ua ke tag nrho peb qhov kev sib tw peb muaj nyob rau theem kawg, thiab nrog kev tswj hwm ntxiv ntawm kev coj ci ci (nws hu ua dimmer, thiab nws yog cais ntawm cov khoom ntsais muag) peb muaj cov haujlwm hauv qab no!

Kuv tau txuas qhov txheej txheem ntawm pawg thawj coj saib.

Nco ntsoov tias S1 hais txog kev hloov pauv nruab nrab ntawm lub ncoo nruab nrab thiab ob qho ntxiv ntawm txhua sab.

- Thaum qhov hloov pauv mus rau sab laug, lauj kaub 2 yuav tswj qhov hluav taws xob uas siv rau tus tiv thaiv txuas nrog lub hauv paus ntawm transistor, tso cai rau koj los tswj qhov ci ntawm cov leds los ntawm 0% txog 100%.

- Thaum qhov hloov pauv yog mus rau sab xis, Lub lauj kaub 1 yuav tso cai rau koj tswj qhov nce ntawm lub teeb liab lub suab thov rau tus tiv thaiv txuas nrog lub hauv paus ntawm transistor.

Kauj ruam 3: Soldering

Cov kauj ruam no tsuas yog siv los qhia koj qee cov duab ntawm kev sib dhos!

-Tsis txhob hnov qab siv txheej tuab tuab ntawm cov tshuaj txhuam kom sov kom sov mus rau lub rhaub dej kub!

Kauj Ruam 4: Xeem Nws

Thiab qhov ntawd, ntawm no yog qhov txiaj ntsig kawg thiab nres me ntsis ntawm cov khoom siv sib txuas.

Kuv vam tias koj txaus siab rau qhov kev sib tham no, thiab nco ntsoov nyiam cov vis dis aus thiab tawm tswv yim ntawm no yog tias koj muaj kev tsis ntseeg! = D

Yees duab:

youtu.be/jSe1bXVsIF4