Light-emitting diodes (LEDs) are pn junctions composed of GaAs
or GaP. Depending on the desired wavelength of light, the
substrates are doped with various elements. When the pn junctions
are connected to a current source in the forward direction,
electrons and holes flood the barrier layer and recombine there.
When they do, the expended energy is released in the form of
visible or infra-red light.
In the reverse direction, LEDs behave the same as normal diodes.
However, the maximum reverse voltage is quite small. For some LED
types, it is even less than 10 V.
What are the characteristics of light-emitting diodes and what
are they used for?
| Materiallist (Excerpt) |
Product |
Amount |
|
Power supply 0...12 V DC/ 6 V, 12 V AC, 230 V
|
13505-93
|
1
|
|
Multi-range meter, analogue
|
07028-01
|
2
|
|
Interrupted connector module, SB
|
05601-04
|
2
|
|
Straight connector module with socket, SB
|
05601-11
|
1
|
|
Angled connector module with socket, SB
|
05601-12
|
1
|
|
Light emitting diode module red , SB
|
05654-00
|
1
|
|
Resistor module 50 Ohm, SB
|
05612-50
|
1
|
|
Resistor module 100 Ohm, SB
|
05613-10
|
2
|
|
Straight connector module, SB
|
05601-01
|
3
|
|
Angled connector module, SB
|
05601-02
|
4
|
|
T-shaped connector module, SB
|
05601-03
|
2
|
|
Connecting cord, 32 A, 500 mm, red
|
07361-01
|
2
|
|
Connecting cord, 32 A, 500 mm, blue
|
07361-04
|
2
|
|
Connecting cord, 32 A, 250 mm, red
|
07360-01
|
1
|
|
Connecting cord, 32 A, 250 mm, blue
|
07360-04
|
1
|
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