What type of resistors do these LEDs need?
1191135
You need to figure that out for yourself with Ohm's law and Watt's law. But do a web search for YSL-R596CR3G4B5C-C10.pdf for the spec.'s. So you can have some numbers for your math. Each color has a different power requirement. And thus a different resistor for each color.
1191136
Depends on what color you want to light, and what your supply voltage is. Usually, with a 12v source, you can squeak by with ~550ohms on red, and 470 on the green and blue.
1191137
At 5 Volts: Red 150 ohms; Green & Blue 100 ohms eachAt 12 Volts: Red 560 ohms; Green & Blue 470 ohms each (Use 1/2 watt resistors at 12 volts)
1191138
Searching for YSL-R596CR3G4B5C-C10.pdf should find you the data sheet. V=IR.
1191139
The formula to calculate resistance in a circuit is: R=V/I or, more relevant to what we're doing:(Source Volts - LED "Forward" Volts) / (LED "Forward" Current / 1000) = Resistance**(Here Current is in mA) So if we have a 12V battery powering a 3.2V 20mA LED (blue/green) our formula becomes:(12 - 3.2) / (20 / 1000) = 440ohms.But you should pick a resistor that is easy to find close to the value you calculate....like 470 ohm for above.For the Red the LED forward voltage is 2V so for a 12V battery, 20mA forward current...( 12 - 2 ) / ( 20 / 1000 ) = 500 The formula to calculate resistance in a circuit is: R=V/I or, more relevant to what we're doing:(Source Volts - LED "Forward" Volts) / (LED "Forward" Current / 1000) = Resistance**(Here Current is in mA) So if we have a 12V battery powering a 3.2V 20mA LED (blue/green) our formula becomes:(12 - 3.2) / (20 / 1000) = 440ohms.But you should pick a resistor that is easy to find close to the value you calculate....like 470 ohm for above.For the Red the LED forward voltage is 2V so for a 12V battery, 20mA forward... » Read More The formula to calculate resistance in a circuit is: R=V/I or, more relevant to what we're doing:(Source Volts - LED "Forward" Volts) / (LED "Forward" Current / 1000) = Resistance**(Here Current is in mA) So if we have a 12V battery powering a 3.2V 20mA LED (blue/green) our formula becomes:(12 - 3.2) / (20 / 1000) = 440ohms.But you should pick a resistor that is easy to find close to the value you calculate....like 470 ohm for above.For the Red the LED forward voltage is 2V so for a 12V battery, 20mA forward current...( 12 - 2 ) / ( 20 / 1000 ) = 500 « Show Less
1191140
180 ohms for the green and blue 270 for the red. The green and blue Led's require a little less voltage than the red one. The red led has an ~1.8V drop. The green and blue have about 3.0V drop assume a 180 ohm resistor sets the green and blue Led's @ 11 mA and the 270 ohm resistor does the same for the red led. These were my calculations for the red = ~1.8V / 270 ohms = 0.0118 A or 12 mA and Green-Blue ~2V / 180 ohms = .0111 A or 11 mA. The resistors are based on 5V Vcc. If you are powering them from 3V3 the red is 180 ohms and the green / blue is 120 ohms. The ohms law formula I used was I = E/R and the values are the ones I use in practice.R K Johnson Sr. 180 ohms for the green and blue 270 for the red. The green and blue Led's require a little less voltage than the red one. The red led has an ~1.8V drop. The green and blue have about 3.0V drop assume a 180 ohm resistor sets the green and blue Led's @ 11 mA and the 270 ohm resistor does the same for the red led. These were my calculations for the red = ~1.8V / 270 ohms = 0.0118 A or 12 mA and Green-Blue ~2V / 180 ohms = .0111 A or 11 mA. The resistors are based on 5V Vcc. If you are powering them from 3V3 the red is 180 ohms and the green / blue is 120 ohms. The ohms law formula I used was I... » Read More 180 ohms for the green and blue 270 for the red. The green and blue Led's require a little less voltage than the red one. The red led has an ~1.8V drop. The green and blue have about 3.0V drop assume a 180 ohm resistor sets the green and blue Led's @ 11 mA and the 270 ohm resistor does the same for the red led. These were my calculations for the red = ~1.8V / 270 ohms = 0.0118 A or 12 mA and Green-Blue ~2V / 180 ohms = .0111 A or 11 mA. The resistors are based on 5V Vcc. If you are powering them from 3V3 the red is 180 ohms and the green / blue is 120 ohms. The ohms law formula I used was I = E/R and the values are the ones I use in practice.R K Johnson Sr. « Show Less
1191141
The formula to calculate resistance in a circuit is: R=V/I or, more relevant to what we're doing: (Source Volts - LED "Forward" Volts) / (LED "Forward" Current / 1000) = Resistance* *(Here Current is in mA) So if we have a 12V battery powering a 3.2V 20mA LED (blue/green) our formula becomes: (12 - 3.2) / (20 / 1000) = 440ohms. But you should pick a resistor that is easy to find close to the value you calculate....like 470 ohm for above. For the Red the LED forward voltage is 2V so for a 12V battery, 20mA forward current... ( 12 - 2 ) / ( 20 / 1000 ) = 500
86819
These worked for me:LEDwholesalers Tower Type G4 18 SMD LED 5050 12V Ac/dc Warm White, 1435WW
1363153
These are stock incandescent bulbs. If you want to convert to LEDs you would have to research and design a replacement circuit. Not terribly hard to do.
1632988
yes, it should work fine,Leds are very low amperage, you might have to use a resister to limit voltage depending on the LED Rating.
2061582
If you don't mind brightness varying or burning out a digital output or a power supply when the LED fails, then don't use a resistor. It doesn't matter which lead of the LED the resistor is connected to.
673620
Yes, it should be fine. Remember that LED's are polarity sensitive so it will not work if you accidently reverse the polarity.
742521
Each led is rated for about 3 volts at about 20 mA. In order to run them from a 9/12 volt voltage source the led requires a resistor wired in series.
494756
Dear Customer,Thank you very much for your inquiry with us!This product is for the halo ring color upgrade. It does come with the resistors to prevent error message from the dash board. This product is strictly to be used for H8 marker bulb/halo ring color upgrade only.Please let me know if I can assist you further on this matter.SincerelyJayiJDMTOY
281458
The SMDs (LEDs) work on 3-3.6V. The current draw is between .02-.03A. There are 12 of these on each bulb. If you take the max values it comes to 1.296W ( 12 x .03 x 3.6). There might be some resistors that might be drawing some power. But overall you are doing way better than the factory bulbs. Update: I did a google search on these LEDs ( 1210). Vendors mention a consumption of .08 W per LED. For 12 it comes to .96W ( 12x.08).
493178
I used these in the front turn signals in my 00 F 450 and work well and are bright and do not have resistor or resistors. But on the back i still have regular bulbs so i do not need resistors. If i unplug one back bulb then the front LED flashes rapidly like it does to warn you one of your turn signal bulbs are out. LED have almost no resistance hence resistors would probably be needed if you convert all at once. NAPA auto parts has Single plug in resistors that go in fuse box or steering column for reasonable price and they do all the turn signal functions , thus you do not need resistors for every LED bulb Just one plug in resistor . For running or parking light no resistors needed only for flashing applications
587576
Assuming you mean you have an AC adapter that outputs 12v DC, you'll probably burn out the led without putting a resistor in the mix. LEDs typically only need a few volts to light
1499711
These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you application. These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you... » Read More These LED's only have two leads. The longer Lead is the Anode +,and the shorter Lead is the cathode - . Use a 1/2 watt 1k resistor in series with a 12 volt supply. The LED flashes and changes color all on it's own with a built in microchip. It looks like a tiny black speck inside the LED. It has no effect on the brightness. I think these Led's are a great buy for the money. They did not come with 1 k resistors. I forgot what they came with. Important you use 1 (1k ) resistor per LED in series. Look up charts on LED's brightness,current draw , voltage and proper voltage drop resistor for you application. « Show Less
1389209
You need to hook a resistor in line to reduce load, my challenger I replaced bulbs with aftermarket bulbs and they are much brighter than stock and no worries on trying to match ohms with LEDs. Did not use LEDs
940703
HI Stew. I used 200ohms to drive 4 RGB leds in parallel with source of 9volts. All four connected to same resistor. I haven't measure current or voltages but they bright pretty good. let me know if you need any measure.
2221987
You will not need resisters unless they are for turn signals. The turn signals will flash very fast without resisters. I found an easier way to control the turn signal flash by replacing the original flasher with a led turn signal flasher. They are inexpensive and Amazon carries them.
1874847
Generally, if you want to try safe operation of a LED, other than flashing, or color changing ones designed for 3 volts direct operation ... using a resister of about 50 ohms per volt of driving voltage produces a safe current of 20ma which falls easily within the average LED's range. Some LEDs run at 30ma, but most do not without degradation. So, trying with 147ohm resister might be a little hot, try 200ohms like the ones included with these LEDs, you should get plenty of brightness.
336185
I ordered White LED. It is 3.2 volts DC each. But, I don't know what color of the LED you ordered, which it depend on what voltage is required. Look it on the label telling you of the voltage.