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CABLING LEDS

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  ASSEMBLIES LEDS

SOME EXAMPLES OF LEDS ASSEMBLIES / VOLTAGE AVERAGE OF LEDS

Voltages: 
red: approx. 1,6 V 
yellow: approx. 1,7 V 
green: approx. 2,1 V 
blue+whiteapprox. 3 V 
infrared: approx. 1,2 V 
 
RESISTANCE TO BE USED:
R1 6x = 165 ohm (brown-blue-green...) 
R2 6x = 680 ohm (blue-gray-brown...) 
R3 8x = 820 ohm (grey-red-brown...) 
 
The specified circuits 1 to 4 are designed for an operating voltage of 6 V/DC. The circuits 5 to 14 are intended for an operating voltage of 12 V/DC. In the circuits 1, 3, 5, 7, 9, 11 and 13 the light-emitting diodes with the respective protective resistors are connected in series to the operating voltage. In the circuits the protective resistor serves to limit the current which passes through the light-emit- ting diodes. The stated values of the resistors ensure that a continuous current of approx. 8 mA to 12 mA (according to the colour of the LED) passes through the light-emitting diodes. The size of the resistor is given by the designation R1, R2 and R3 (see contents). In the circuits 2, 4, 6, 8, 10, 12 and 14 the light-emitting diodes for the operating voltage - connected in series with the protective resistor - are connected in parallel. Through each paralle ed arm of a circuit (LED + R in series) the current consumption of the circuit is increased by approx. 8 mA to 12 mA. The stated circuits may only be operated at batteries or supply units for constant voltage respectively (no bell transformer). 
 
 
 
 

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