Electronics
Light Emitting Diodes (LEDs)
Symbol
DC Circuit
TTL Drivers
Tri-Color Circuit
Notes
Symbol
DC Circuit
TTL Drivers
Tri-Color Circuit
Notes
Typical Forward Voltage Drop
for LED (V
LED
) = 1.5 V to 2.5 V
V
LED
for a red LED = ~1.7 V
V
LED
for a green LED = ~2.5 V
Typical Forward Voltage Drop
for silicon diode (V
diode
) = ~0.6 V
Typical Forward Current
for LED (I
LED
) = 5 mA to 20 mA
Silicon Diode Polarity
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This page is for INFORMATIONAL PURPOSES ONLY.
Page author: Dawn Rorvik (
rorvikd@evergreen.edu
)
Last modified: 03/20/1999