Assertion: led's voltage | /r/HasProperty | required for forward bias
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Source sentences:
text: To make a LED glow it is necessary to forward bias the diode sufficiently to pass an appropriate amount of current, generally the shorter the wavelength of the light produced, the higher the voltage required for forward bias, and typical forward bias voltages vary from 1.5 to 1.7V for infrared LEDs to 3.3V or more for blue and ultraviolet.