Dimming of led lights? - led dimming
3 10mm Wired has a 9-volt battery lead. When the switch is turned on, and then go for it. Is it because there is too much tension? How do I solve this problem without another battery to use.
He had three LEDs in a row. It took me three cables to the positive, glued the ends of the positive part, then the three turned to the positive ends of cable. I did the same in the negative.
Originally it had an LED, but it was already too thin, so I decided, 2 add others believe it was because too much stress for 1 lamp.
Issued Color: Red
Size: 10mm
Lens Color: Clearwater
Voltage (V): 1.9 ~ 2.1
Picture angle: 25 degrees
Static meaning: Yes
Luminous Intensity: 10,000 ~ 12,000 mcd
Life: 100,000 hours
Saturday, January 23, 2010
Led Dimming Dimming Of Led Lights?
4 comments:
LEDs dimmed, because the battery is dying
9V battery should live about 20 mA, a few hours
Anita
I am surprised that not consume the LED.
Each LED is rated for a forward voltage of 1.9 to 2.1 volts, and remember to take the three 9-volt LED.
Added: without mathematics and the voltage drop in power, simply connect a few LEDs from one end of the series (with special attention to the polarity of the LED) and when a voltage reading of the order of 2, 0 volts over a single line - You are ready to continue.
You must kill the battery, what smoking is the only reason why the LED. You are Applying to 9-volt LED nominal 2.1 volts, it overloads.
You should always have a resistor for current limiting.
If it does not specify the state of the LED, assuming it is 20 mA, then we recommend that the three series, not parallel, it is now, with additional resistance to 3 / 02 = 150 Ohm series.
Although there is a good chance that the lights are already severely damaged.
.
An LED has additional information that you give. It has an internal resistance, usually from 10ohm to 100ohm. You must find the inner strength. They also have a current limit, usually somewhere around 10 mA. You need to find these things, and create a circuit diagram. You must also connected in series. The path is connected in parallel, so that everyone has an equal amount of tension, not less. You need to connect to a different purpose.
The tension is a direct indication of the amount of voltage they are intended to achieve. If you have a 9V battery, then you must make some kind of division of power, either by the resistors in series with one or more diodes in series. For a 9V battery and 2 V forward voltage, then you need 4 LED's, and probably get a ~ 25ohm resistor on the ideal amount of voltage through them all.
Sometimes, too much voltage or current implementation of something burning and destruction.
If you want to understand how it works, then you take some physics courses. Physics IICollege encompasses electromagnetism and show you exactly how to do something. Or search for the theory of "Circuit" on Wikipedia and follow the links in place.
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