Assertion: led's output | /r/HasProperty | needed
Facets:
Source sentences:
text: In most cases LEDs are operated from a low voltage DC supply, with a series resistor, R S used to limit the forward current to a safe value from say 5mA for a simple LED indicator to 30mA or more where a high brightness light output is needed.
text: In most cases LEDs are operated from a low voltage DC supply, with a series resistor, R S used to limit the forward current to a safe value from say 5mA for a simple LED indicator to 30mA or more where a high brightness light output is needed.
text: Medium power LEDs are often through-hole mounted and used when an output of a few lumen is needed.