LED Teeb Pom Kev Me Me: 3 Kauj Ruam

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

Cov Lus Qhia no qhia koj yuav ua li cas thiaj ua lub teeb liab pom me me los ntawm cov khoom qub uas siv dua tshiab.

Ib lub teeb liab los ntawm lub ntsuas ntsuas feem ntau tau nthuav dav ua ntej pub rau hauv microprocessor lossis microcontroller analogue rau cov hloov pauv digital. Lwm txoj hauv kev yog lub Circuit Court qhia hauv Cov Lus Qhia no, lub ntsuas hluav taws xob LED uas tsis ua tiav. Txawm li cas los xij, lub voj voog no tsis suav nrog lub suab nrov nrov. Tsuas yog tus ntes. Thaum tsis siv lub teeb liab, LED tau muab tua. Thaum ib qho me me amplitude sine wave tau thov ces LED tig ON.

Khoom siv

qhov chaw: LED - 2, lub hom phiaj dav dav NPN transistors - 2 qhov siab tshaj, cov xov hlau, pawg matrix, 470 uF lossis 100 uF bipolar capacitor, 5.6 kohm resistor, 100 -ohm resistor lossis ob 220 ohm resistors txuas nrog ua ke, 100 kohm resistor.

cov khoom siv xaiv tau: cov laug, hlau xaim (1 mm), 10 uF capacitor.

cov cuab yeej: pliers, hlau stripper

cov cuab yeej xaiv tau: soldering hlau, multimeter

Kauj Ruam 1: Tsim thiab Simulations

Kuv tau hais qhia Cin, 470 uF bipolar capacitor vim tias lub teeb liab nkag tau tuaj yeem yog qhov tsawg heev. Txawm li cas los xij, Kuv tau siv lub Circuit nrog tsuas yog 100 uF bipolar capacitor. Koj tuaj yeem hloov Cin nrog qhov luv Circuit Court kom nce qhov kev nce hauv Circuit Court yog tias lub teeb liab qis tshaj qis dua 0.7 V.

Kuv siv PSpice software qub los txo lub sijhawm kos duab. LED tau ua qauv nrog peb lub hom phiaj dav dav.

Rled = (Vs - Vled) / IledMax = (3 V - 2 V) / 10 mA = 100 ohms

Rin yog ib qho tseem ceeb heev kom paub tseeb tias lub transistor raug kaw thaum tsis siv lub teeb liab. Txawm li cas los xij, qhov tso tawm tsawg tsis kam ua kom lub zog tshem tawm qhov xav tau Rin.

Kev sim qhia pom 8 mA tam sim no hla LED.

Kauj ruam 2: Tsim Circuit Court

Cov xim xiav thiab txiv kab ntxwv yog cov tswv yim. Cov xaim xiav yog siv rau cov cim qhia uas poob qis dua 0.7 volts. Yog li tshem tawm qhov xav tau rau cov tswv yim capacitor Cin.

Kuv txuas lub 100 uF capacitor hla lub hwj chim. Koj yuav xav siv 10 uF capacitor vim tias lub sijhawm them ntev ntev los ntawm Farad tus nqi siab zog lub zog lim cov lim dej tuaj yeem ntws tawm tam sim no los ntawm roj teeb thiab lawv tuaj yeem ua rau kub.

Kuv yuav tsum siv ob lub transistors vim tias yog cov qub Soviet transistors (uas kuv tau txais hauv kev xa ntawv) thiab tsis tuaj yeem ua haujlwm siab zog teeb liab. Cov transistors tuaj yeem laus dua kuv:-)

Kauj Ruam 3: Xeem Circuit

Cov xim xiav thiab txiv kab ntxwv yog cov tswv yim.

Tsis txhob txuas cov txiv kab ntxwv thiab xaim xaim ua ke. Koj yuav ua luv luv ntawm cov khoom siv hluav taws xob. Cov no yog ob qhov kev nkag siab sib cais. Tsawg kawg ib ntawm cov tswv yim no yuav tsum sab laug txuas.

Tsis txhob hnov qab, qhov Circuit no tsis tuaj yeem txuas ncaj qha rau lub sensor vim qhov nce qis. Nws xav tau lub tshuab hluav taws xob nyob nruab nrab ntawm cov khoom tso tawm sensor thiab cov khoom siv hluav taws xob no.