Terminology: Difference between revisions
Tweaked some bookmark directors and a few minor spelling errors.
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(Tweaked some bookmark directors and a few minor spelling errors.) |
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<span id="D"></span> | <span id="D"></span> | ||
;<span id="DD">DD</span>: 1. direct drive. See article [[Driver]]. | ;<span id="DD">DD</span>: 1. direct drive. See article [[Driver#Direct Drive|Direct Drive]]. | ||
:2. Dino Direct, a budget dealer | :2. Dino Direct, a budget dealer | ||
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:2. a translucent attachment to make a flashlight serve as a camping lantern. | :2. a translucent attachment to make a flashlight serve as a camping lantern. | ||
;<span id="direct drive">direct drive</span>: When the batteries power the LED directly without any regulation in the driver, or without a driver at all. See article [[Driver]]. | ;<span id="direct drive">direct drive</span>: When the batteries power the LED directly without any regulation in the driver, or without a driver at all. See article [[Driver#Direct Drive|Direct Drive]]. | ||
;<span id="DMM">DMM</span>: Digital | ;<span id="DMM">DMM</span>: Digital Multimeter. Measures volts, amps, ohms, etc. You can spend anywhere from a few dollars to several hundred on a DMM. For flashlights it is helpful to be able to measure current (amps) in addition to volts. | ||
;<span id="donut hole">donut hole</span>: a dark spot in the center of the flashlight beam. This is a common problem with multi-die emitters (can also appear as a plus-sign in the beam reflecting the layout of the 4 dice) but can also be the result of a poorly matched reflector. | ;<span id="donut hole">donut hole</span>: '''(or <span id="doughnut hole">doughnut hole</span>)''' a dark spot in the center of the flashlight beam. This is a common problem with multi-die emitters (can also appear as a plus-sign in the beam reflecting the layout of the 4 dice) but can also be the result of a poorly matched reflector. | ||
;<span id="driver">driver</span>: the electronics in between the battery and LED. This usually consists of a circuit board in the "pill". It regulates the voltage to the LED as well as provides the various modes and memory of the light. See article [[Driver]]. | ;<span id="driver">driver</span>: the electronics in between the battery and LED. This usually consists of a circuit board in the "pill". It regulates the voltage to the LED as well as provides the various modes and memory of the light. See article [[Driver]]. | ||
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<span id="M"></span> | <span id="M"></span> | ||
;<span id="mAh">mAh</span>: milliampere | ;<span id="mAh">mAh</span>: milliampere hours - a rating of [[battery capacity]] in thousandths of an ampere in an hour. A 1000mAh battery should be able to discharge 1000mA for 1 hour or 500mA for 2 hours. | ||
;<span id="mcd">mcd</span>: millicandela, 1/1000 of a candela (cd) - a measurement of [[Light Output Measurements|light intensity]]. | ;<span id="mcd">mcd</span>: millicandela, 1/1000 of a candela (cd) - a measurement of [[Light Output Measurements|light intensity]]. | ||