LED Zaub: 8 Kauj Ruam

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

Kuv xaj USB them nyiaj hnub ci thiab lub teeb los ntawm Tuam Tshoj ntawm eBay thiab tau txais cov khoom siv hloov chaw ua tiav cov khoom lag luam.

Muaj qhov uas ploj lawm uas suav nrog cov xovtooj uas ploj lawm thiab cov roj teeb uas tsis tau txais.

Qhov no muab kuv lub tswv yim. Kuv yuav siv cov ntaub ntawv hlau thiab lub vijtsam los ntawm lub teeb kom ua rau kuv 12 LED zaub.

Koj xav tau ib lub xaim liab rau qhov txuas zoo thiab 12 lub xov tooj dub rau qhov tsis zoo txuas. Koj kuj tseem xav tau cov tshuaj tiv thaiv rau txhua LED kom paub tseeb tias qhov hluav taws xob LED tsis tshaj 2 V thiab qhov tam sim no tsis tshaj 5 mA lossis 10 mA nyob ntawm seb qhov ntsuas LED tam sim no.

Ib tus phooj ywg ntawm kuv kuj tau txais tib cov khoom siv thiab pom siv rau lub vaj huam sib luag ci ntsa iab LED los ntawm lub teeb:

hackaday.io/page/6955-recycled-light-dimmer

Khoom siv

Cheebtsam: 20 LEDs, cov xov hlau thaiv, 100-ohm lossis 220-ohm resistors, ntoo thaiv, ntsia hlau, tshuab ntxhua khaub ncaws, lub zog siv (3 V yam tsawg kawg-AAA/AA/C/D roj teeb, roj teeb hlua).

Yeem cheebtsam: solder.

Cov cuab yeej: laum hluav taws xob, xaim hluav taws xob tshem tawm, pliers, ntsia hlau (ntxiv rau/rho tawm, lossis ob qho tib si).

Yeem cov cuab yeej: cov hlau txuas.

Kauj ruam 1: Tsim Circuit Court

Xam qhov xav tau tus nqi tiv thaiv rau 5 mA LEDs tam sim no:

Rled = (Vs - Vled) / Iled = (3 V - 2 V) / 5 mA

= 200 hli

(Kuv xaiv 220 ohms los ntawm E12 resistor series)

Xam qhov xav tau tus nqi tiv thaiv rau 10 mA LEDs tam sim no:

Rled = (Vs - Vled) / Iled = (3 V - 2 V) / 10 mA

= 100 hli

(Kuv xaiv 100 ohms los ntawm E12 resistor series)

Xam qhov siab tshaj plaws resistor zog dissipation:

Pmax5mA = Vrled * Iled

= 1 V * 5 mA = 0.005 Watts = 5 mW

Pmax10mA = Vrled * Iled = 1 V * 10 mA = 0.01 Watts = 10 mW

Yog li peb tuaj yeem siv 0.25 W lossis 250 mW resistors.

Kauj Ruam 2: Simulation

PSpice software simulated LED tam sim no zoo ib yam li qhov kwv yees/suav qhov muaj txiaj ntsig.

Kauj Ruam 3: Laum Qhov

Kuv laum qhov nyob hauv kuv cov ntoo thaiv.

Kauj Ruam 4: Ua Circuit Court

Kuv siv cov xim daj tsis yog xaim liab vim tias kuv muaj lub xov tooj liab loj. Tsis tas li, kuv txuas cov xaim daj rau txhua LED (koj tsis tas yuav ua qhov ntawd) kom tso cai tswj qhov sib txawv. Kuv cov zaub tuaj yeem qhia qhov sib txawv ntawm qhov ntau ntawm ob qhov nkag. Txawm li cas los xij, qhov ntsuas hluav taws xob zoo yuav tsum tsawg kawg 2 V ntau dua qhov tsis zoo los xyuas kom meej tias LED tig ON.

Koj tuaj yeem pom li cas sab ntawm cov ntoo thaiv zoo li hauv daim duab thib ob.

Kauj Ruam 5: Xeem Ntawv

Xeem rau Latin cov tsiaj ntawv niam ntawv:

"H", "A", "L" thiab "T"

Kauj Ruam 6: Xeem Cov Ntawv Lavxias

Kev Xeem rau Cyrlic cov niam ntawv:

1. "Г" - Zoo ib yam li cov ntawv Latin "G"

2. "П" - Zoo ib yam li cov ntawv Latin "P"

Kauj Ruam 7: Xeem Zauv

Xeem rau Arabic thiab Roman tus lej:

1. "0" - Xoom

2. "II" - Ob

Kauj Ruam 8: Kuaj Cov Duab

Kuaj rau cov duab:

1. Rocket

2. Alien UFO