![]() Finally we’ll mention the lighting cone: LED’s project a directional light, where an incandescent will illuminate in a full 180 degree hemisphere. Incandescent lamps produce a little more heat as well, and can actually make the actuator quite warm to the touch after extended operation (don’t worry, they are designed to withstand the heat). Lifespan and failure rate are another criteria: White incandescent lamps have a MTBF of 10,000 hours, while LEDs half life is at about 100,000 hours (11 years of constant illumination). Current draw may also be a concern: incandescent lamps draw about 70mA, while LEDs draw about 10mA. White incandescent lamps are less expensive and illuminate white, while red LEDs cost a bit more and illuminate red. ![]() Depends on what’s important in your design… The primary concerns are price and color.
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