Wiring your LED

So I just built a new garage and I want to make my own LED lighting for my work bench. I was looking at 1 watt luxeon leds and I was wondering if I need a resistor with those leds? I was looking on ebay and it said that the driver is already installed? I will run these with a PC power supply rated @ 800 watts will this work? Can anyone guide me thru this? Ive been looking on here and reading as much as I can... Thank you.

Topic by BeachKid 


How to Lit a 1watt LED using a NOKIA charger

I would like to lit 1w Power LED using NOKIA Charger. Mostly, a 1watt Power LED's specification is 3v0~3v4 DC Volts and 350mA Current. Printed specification on Charger Cabinet it is for - Input 100/240v 50~60 Hz…„ Output 5.7v/800mA. For Series Resistor's Value…„ if we calculate upon Ohm's Law - for VoltageSupply, Vs 5.7v…„ ForwardVoltage, Vf 3.3v…„ ForwardCurrent, If 330mA to lit single LED. In Result we can use a Standard Value of Resistor 7.5 Ohm and because of Resistor's Power Dissipation 792 Milliwatts, can use a 1watt. In series I planted 10 Ohm 1w Resistor instead of 7.5Ω. LED lit up in normal. Neither too much nor too little shining. But…„ about two and a half hours later it was flashing. I switched it's off and checked that the charger unit also became hot. Where I made mistake…? Please HELP how to lit this 1watt LED using this NOKIA charger. I also have one another charger with printed specification on cabinet it is for - Input 100~240v 50/60Hz…„ Output 5.2v/400mA. I also want to use this for one another 1watt Power LED to lit. Please help for this too. please ignore my  bad english.

Topic by free2atc   |  last reply


12VAC powered single 1watt led? resistor heat problem Answered

I have a dead halogen 12vac, 20w bulb that I was trying to replace with 3.7 volts 1w led, so I added a reverse parallel diode, resistor, and a capacitor on the other side(in the picture below), and got smoke after few secs it was on (it was the resistor), nothing burned out, so I had 100 tries more- changed resistor values, and finally figured out that the brightness depends on the value of the capacitor. With 50v 4.7microfarads(looks like the one in the picture below, but different value) I got big smoke and bright light, with 50v 25microfarads everything was cool but led was glowing very weak So my question is: what should I change in my circuit so my 1w led would light at full brightness and wouldn't start a fire?

Question by xtony666   |  last reply


Can a 500Kohm 2W audio taper pot replace a 500Kohm 1W audio taper pot?

I'm sourcing parts for a Theremin (http://www.therealcharleshobbs.com/keppingertubetheremin/) and the parts list calls for a 500K Ohm 1Watt Audio taper potentiometer. I cant find one rated at 1Watt, but I can find one rated at 2 Watts. Will the 2 Watt option be an acceptable replacement?

Question by smkoberg   |  last reply


resistor parallel

Sir I need 100ohm 3 watt resistor but cannot find it in market, in market I find 100ohm 1watt resistor ,plz tell me how I acquire (100ohm 3 watt resistor) value. can I parallel three 100ohm 1 watt resistor to get my value

Question by robinhoodxx   |  last reply


Ac and dc led drivers?

Can I power an AC LED driver with DC voltage, I understand the driver controls voltage  1watt , the driver was rated 85 - 265 volt ac input but the seller had written 12 volt with grease pen across the printed label. This light works fine

Question by dsr.   |  last reply


Suitable transistor or IC to run 1 Watt LED in low voltage? Answered

I want to run 4 x 1Watt LEDs from a 3.7V source (10000mAh). LED DC Forward Current: 350mA The purpose is to sue it with a motion sensor. Please suggest a transistor or IC with maximum efficiency. Update: I found that the "IRF 540" Mosfet is a good solution.

Question by shijilt   |  last reply


How to make a constant 5v power supply from 12v battery for 3 no. of 1watt smd led lights?

I have lm7805 voltage regulator, 3 nos. of 1 watt smd led 3 to 3.7v 320ma power of each led. I want to use these 3 led in a parallel circuit. so please tell me the resistor value and capacitor value for making this circuit.

Question by grs_14   |  last reply


Best LED driver?

I need to driver (5) 1watt white LEDs (forward voltage of 3.2~3.5v) and current of 350mA. I guess the best way would be to connect them all in series and somehow give them power. This is meant to be powered off of the wall socket (whether through SMPS or a capacitor or a resistor or a transformer or anything.). My question is what's the best way to drive them? I've never really used high power LEDs before. I'd also prefer to be able to adjust the brightness...

Topic by guyfrom7up   |  last reply


how to make 12v dc operated drive for 15 pcs. high power LED's?

I wants to make circuit for using 15 pieces 1watt/350ma high power LED's. So how can i make it?? I have 12volt/5Amp DC input. So please reply suggessions. I havnt heat sink in my LED's, so heat sink is must required or can i use without it. I wants to make car head light by using it. looking forward replies...prashant

Question by pureh2o_filteration   |  last reply


Help, how do I wire this speaker together? Answered

Hi, I'm doing an A Level project at College, and I'm making an MP3/iPod speaker system. I'm using a 3.5mm headphone jack to connect my iPod to my speaker. I followed these instructions to wire my headphone jack to my speaker, and it worked!: https://www.instructables.com/id/How-to-wire-a-headphone-jack-to-a-speaker/ However, I want it to be a little louder, and it mentioned using an amplifier between the speaker and the headphone wire. Also I want to use a 9v battery to power my speaker, instead of using my iPod battery. I'm new to electronics. I've got a 6 ohm, 6-10watt speaker. I searched for a cheap amplifier at Maplins, and I've found a 1watt ampilifer kit, would that be ok, would it be enough to boost the volume a little? The reason why I have to buy a cheap one is because I need to stay on a low budget (specification related). So how would I wire/connect the headphone jack, the amplifier, the 9v battery connector and the speaker into one circuit? This is the 1watt amplifier I have found: http://www.maplin.co.uk/Module.aspx?ModuleNo=220054 Thanks for reading, and I hope you'll be able to help me :) -Mason

Question by Mason12310   |  last reply


led driver automotive

Can I power an AC LED driver with DC voltage, from what I understand the driver controls voltage and current. I purchase an LED light 7 x 1watt , the driver was rated 85 - 265 volt ac input but the seller had written 12 volt DC with grease pen across the printed label. This light works fine so I ordered 7 more like it with same ratings from a differant seller and they only work on 115 - 230 volt. Now I need to find proper driver or ship back to Hong Kong( Grrrr) I have seen drivers rated at 12 volt AC, will these work on 12 volt DC voltage? Thank you in advance, Duncan. 

Topic by dsr. 


LED driver question

Reposting need help Can I power an AC LED driver with DC voltage, from what I understand the driver controls voltage and current. I purchase an LED light 7 x 1watt , the driver was rated 85 - 265 volt ac input but the seller had written 12 volt DC with grease pen across the printed label. This light works fine so I ordered 7 more like it with same ratings from a differant seller and they only work on 115 - 230 volt. Now I need to find proper driver or ship back to Hong Kong( Grrrr) I have seen drivers rated at 12 volt AC, will these work on 12 volt DC voltage? Thank you in advance, Duncan. 

Topic by dsr. 


LED SET UP

Hi , new to instructables and have been looking at some posts and am now confused. Im in the process of seting up a led lighting board, I am using 20 blue high power 1W led's 350mw each. My plan is to run them from a computer power supply, but am unsure of the safest way to hook them up, parallel with a resistor for each or so on, I am basic when it comes to electronics and components, i can read a basic diagram. Also some parts listed in high power led driver on this site are parts numbers that are not available in Australia, i know i need to regulate voltage and current at 3.5v and 350ma but don't know what parts to use, i used led calculator and was told to use a 1watt 5.6ohm resistor in parallel. Please help

Topic by darky82 


Indoor LED plant lights

I am new to posting in the forums, and actually am not even sure if this is being posted in the right area. My name is Ryan, and I need some help. I have been growing spices/herbs for my own recipes for a couple years, and have always used artificial lights. I use a whole wack of those spiral florescent lights (The 23watt ones to replace a 100watt light bulb), and it works alright. I now want to create a panel of LED's so that I can increase my lumen count, and therefore increase the rate of growth. I need help with how to use resistors to get the power to what a 50 LED panel would need. LED: wattage: 1 watt Forward Voltage : 2.1V~2.3V Forward Current: 300mA. ATX Power Supply: Wattage: 250 Normal 120 volt Canadian power I want to make a panel that has 50 1watt LED's in it, power it from a modified 250watt ATX power supply, and if possible, power more than one from a single PSU (Power Supply Unit) (Something like a quick connector setup, have all resistors panel side, and have cords running to the PSU where it uses quick connectors) I want to use the PSU because I have three at my disposal. I was thinking that it would only need 50 watts or something, and I could wire it in series, however I don't know what resistors to use, or where to use them, to make the power work for the LED's. I can wire thing together, solder, and have a basic understanding of circuitry (Like power flows this direction, and this will do that...... don't know numbers)

Topic by MaXoR   |  last reply