Duo Leds 0 1/8in Bi-Color Diffusion Yellow Red Change Loks 20 Piece S1052

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20 pieces DUO Bi-Color LEDs 3mm yellow / red diffuse
We offer you a very rare LED type with two colors in a standard 3mm housing.
Depending on the polarity, it lights up red or yellow (color change due to polarity reversal).
Ideally suited, for example, for lighting that changes in the direction of travel on locomotives and railcars, push-pull trains and much more. for analog DC railways
Technical specifications:
Design - 3mm
Luminous color - red and yellow
Voltage - red = 2.00V DC and yellow 2.00V DC
Current - per color max. 20mA
Beam angle - approx. 50 °
Luminosity - red approx. 140mcd and yellow approx. 140mcd
Housing color - white diffuse
Connection type - 2-pole (bipolar - color change by reversing polarity)
The
Connection scheme 1
shows the connection of 4 LEDs with only 2 resistors. The small disadvantage with this simple circuit is the use of only one resistor for both colors. The value of the resistance determines the light intensity. It is therefore not possible to adjust the brightness of the two colors individually.
The
Connection scheme 2
is a little more complex. The advantage here is the use of 1N4148 diodes. Now you can insert 4 resistors and thus set the brightness of each individual luminous color separately.
The values ​​of the resistors are based on the maximum driving current and also on your individual preferences for brightness.
If you are up for the
Connection scheme 1
you need with a driving voltage of e.g. max .:
10V - 470 ohms
12V - 560 ohms
14V - 680 ohms
If you are up for the
Connection scheme 2
you need with a driving voltage of e.g. max .:
10V - 470 ohms for red and yellow
12V - 560 ohms for red and yellow
14V - 680 ohms for red and yellow
The specified resistance values ​​are the minimum values. If you want to reduce the luminosity, then simply use resistors with higher values.
Enjoy your shopping!!!
Important note on the purchase process when purchasing multiple items
When purchasing multiple items, please make sure that you only visit the eBay checkout "pay now" after you have bought all the items. This is the only way to combine your order into one order. So that the shipping costs are only calculated once by eBay, you have to go through the purchase process!
Please inquire the international shipping costs for multiple purchases before you pay!
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The Connection scheme 1 shows the connection of 4 LEDs with only 2 resistors. The small disadvantage with this simple circuit is the use of only one resistor for both colors. The value of the resistance determines the light intensity. It is therefore not possible to adjust the brightness of the two colors individually. The Connection scheme 2 is a little more complex. The advantage here is the use of 1N4148 diodes. Now you can insert 4 resistors and thus set the brightness of each individual luminous color separately. When purchasing multiple items, please make sure that you only visit the eBay checkout "pay now" after you have bought all the items. This is the only way to combine your order into one order. So that the shipping costs are only calculated once by eBay, you have to go throug