Three volts...
The forward voltage of an LED is the voltage that must be applied across the leads of an LED, anode to cathode, in order for the LED to function and turn on.
How much voltage is required for an LCD monitor to start?Read more: How_much_voltage_is_required_for_an_LCD_monitor_to_start
A: That resistor is there to limit the current to the LED it can be any value if the voltage is decreased or increased or no resistor if the voltage across the led is equal to the forward voltage drop.
A LCD (liquid crystal display) monitor with a LED (light-emitting diode) backlight
LED
25000
LCD monitor and the LED monitor
Light emeeting diode monitor
LCD monitor and the LED monitor
how much voltage does a monitor takes to operate
A; a LED can have a voltage of 1.8v to 5 or higher voltage whites and red are usually in the low voltage while green and blue are int he range of higher voltage
high voltage probe