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3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief: 3 Kauj Ruam
3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief: 3 Kauj Ruam

Video: 3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief: 3 Kauj Ruam

Video: 3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief: 3 Kauj Ruam
Video: SUPER BRIGHT LED TORCH WITH 2KM RANGE PART 2 2024, Kaum ib hlis
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3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief
3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief
3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief
3W LED Strobe - 2 AA Roj Teeb thiab Joule Thief

Qhov teeb pom kev zoo LED tso cai rau siv 2.4V piv rau 4.5V rau feem ntau 555 lub sijhawm sib tw. Nws siv Joule Thief los qhib 4V MOSFET, txo tus naj npawb ntawm cov cell xav tau. Nws kuj tseem tsim nyog rau qis LEDs thiab PWM dimming.

Kauj ruam 1: Cov ntaub ntawv

Khoom siv
Khoom siv

Strobe Teeb

  • 3W liab/daj LED
  • Resistor (yeem)
  • 2 AA roj teeb rov tau

555 timer Circuit

  • Lub zog qis 555 lub sijhawm (piv txwv li ICM7555, TLC555)
  • N-Channel Fais Fab MOSFET (piv txwv li IRFZ44N)
  • Diode (rau lub voj voog ua haujlwm tsawg dua 50%)
  • 0.01 uF ceramic capacitor
  • 10 uF electrolytic capacitor
  • Resistors R1 thiab R2: Yuav tsum siab dua 1k (qhov muaj txiaj ntsig nyob ntawm qhov xav tau zaus thiab lub voj voog ua haujlwm)
  • Hlau

Joule Tub

  • 2x Enameled tooj liab hlau
  • Toroid hlaws (koj tuaj yeem pom lawv siv CFL teeb)
  • NPN transistor (piv txwv li 2N3904)
  • 1 k ohm resistor
  • 2 x Diode
  • 10 uF electrolytic capacitor (tsawg kawg 25V ntsuas)

Kauj Ruam 2: Joule Thief rau Tsav MOSFET

Joule Thief rau Tsav MOSFET
Joule Thief rau Tsav MOSFET
Joule Thief rau Tsav MOSFET
Joule Thief rau Tsav MOSFET
Joule Thief rau Tsav MOSFET
Joule Thief rau Tsav MOSFET

Qhov kev sib tw strobe no suav nrog 555 lub sijhawm siv los ntawm Joule Thief. LED khiav ncaj qha los ntawm cov roj teeb, tab sis koj tuaj yeem siv tus tiv thaiv. Koj yuav tsum siv tus tiv thaiv yog tias koj siv 20 mA LEDs. Kev siv cov hlwb tsawg tsawg ua rau lub zog poob los ntawm qhov txwv tam sim no. Yog tias 12 volts siv los ua lub zog no, nws yuav poob 80% ntawm lub zog (9.6V) raws li cua sov los ntawm tus tiv thaiv. Lub roj teeb hluav taws xob yuav tsum zoo ib yam li LED qhov hluav taws xob rau pem hauv ntej. Rau UV/xiav/ntsuab/dawb LEDs, siv 3.6V. Rau cov liab/daj LEDs, siv 2.4V. Yog tias koj siv IR LEDs, nws muaj peev xwm ua kom muaj zog nrog ib lub xovtooj yog tias qhov hluav taws xob rau pem hauv ntej yog 1.7V lossis tsawg dua. Txhawm rau ntxiv LEDs ntau dua, muab lawv sib dhos ua ke.

Joule Thief Circuit muaj npe nrov rau lub zog xiav LED nrog 1.5V, tab sis nws kuj tseem tuaj yeem siv los qhib 4V MOSFETs, uas yooj yim mus nrhiav. Piv rau NPN/PNP transistors, MOSFETs tsis xav tau ntau qhov tam sim no kom qhib vim lawv tsis ua kom nrov tam sim no. Lawv kuj muaj qis dua-xeev tsis kam, uas txhais tau tias koj tuaj yeem tsav tsheb liab liab ntawm qhov ci nrog 2.4V.

Txij li 2.4V siab dhau rau Joule Thief ua haujlwm, yuav tsum siv lub diode los tso qhov hluav taws xob ntau dhau. Rau cov roj teeb ntau dua, siv cov diodes ntau dua. Kuv kuj tau suav nrog daim duab qhia uas qhia koj yuav ua li cas rau cua toroid hlaws. Peb tig yuav tsum ua haujlwm. Joule Thief thiab strobe Circuit kos txog 45 mA ntawm kev tos.

Strobe Circuit yuav tsum siv Cov Khoom Siv Hluav Taws Xob Tam Sim No Lub zog qis 555 lub sijhawm yuav tsum tau siv ntawm no vim tias, ntawm qhov siab dua tam sim no, qhov hluav taws xob muab los ntawm Joule Thief txo qis. Tias yog vim li cas peb thiaj xav siv MOSFETs.

Lus ceeb toom: Nco ntsoov tias ib txwm muaj lub nra rau Joule Thief. Tsis muaj lub load, lub zog hluav taws xob tuaj yeem ua kom dhau thiab ua rau 555 lub sijhawm thiab MOSFET thaum koj qhib lub strobe Circuit. Yog tias lub tshuab hluav taws xob tau them ntau dhau, tshem lub roj teeb thiab luv lub tshuab hluav taws xob kom tso nws. Nws ib txwm yog lub tswv yim zoo los ntsuas qhov hluav taws xob nrog lub multimeter.

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