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2. Holiday lighting technology - Wikipedia

   en.wikipedia.org/wiki/Holiday_lighting_technology

   An electronic holiday light controller usually has a diode bridge followed by a resistor-based voltage divider, a filter capacitor and a fixed-program microcontroller. The micro-controller has three or four outputs which are connected to transistors or thyristor which control interleaved circuits, each with lamps of a single color.

3. Carson Williams (electrical engineer) - Wikipedia

   en.wikipedia.org/wiki/Carson_Williams...

   Carson Williams is a computer engineer [1] from Mason, Ohio who is noted for his light shows using Christmas lights affixed to and around his house. The lights are programmed and synchronized to turn on and off with music using a computer application and set of controllers from the Light-O-Rama company. For each minute of animation synchronized ...

4. Christmas tree (drag racing) - Wikipedia

   en.wikipedia.org/wiki/Christmas_tree_(drag_racing)

   A common Christmas tree consists of a column of seven lights for each driver or lane. Each side of the column of lights is the same. At an NHRA national event, the Christmas Tree, which was first used in April 2011, from the top down, consists of a blue LED light set (top and bottom halves), then three amber bulbs, then a green bulb and a red ...

5. DMX512 - Wikipedia

   en.wikipedia.org/wiki/DMX512

   DMX512 has also expanded to uses in non-theatrical interior and architectural lighting, at scales ranging from strings of Christmas lights to electronic billboards and stadium or arena concerts. It can now be used to control almost anything, reflecting its popularity in all types of venues.

6. Electroluminescent wire - Wikipedia

   en.wikipedia.org/wiki/Electroluminescent_wire

   Like EL wire drivers, sequencers are rated to drive (or power) a range or specific length of EL wire. For example, using a sequencer rated for 1.5 to 14 meters (5 to 45 feet), if less than 1.5m is used, there is a risk of burning out the sequencer, and if more than 14m is used, the EL wire will not light as brightly as intended.

7. Talk:Programmable logic controller - Wikipedia

   en.wikipedia.org/wiki/Talk:Programmable_logic...

   The control system turns on the pump, and closes a control system contact which is in parallel with the low level switch. This is called "latching" because it goes into a state where the low level switch closure is no longer needed to keep the pump on, i.e. it is unable to "break" the circuit because it has been "bypassed" by the control system ...