Physics & Math of Lighting and Electricity
Get flash to fully experience Pearltrees
opto-splitter - ControlBooth
aka " opto ," " opto-isolator ." A DMX data-distribution device, used when more than one data stream is required, or when the number of devices on a single line exceeds the maximum of 32. Required as the protocol does not permit "Y" cables. The "opto" part is short for "optically isolated," a desirable feature so that a fault on one output cannot propagate to other outputs. Some opto-splitters just provide electrical isolation between the input and the outputs, but the best types have a separate transformer -isolated power supply or DC -to-DC converter for the input and each of the outputs.
DMX512 - Wikipedia, the free encyclopedia
A DMX splitter/buffer. It allows many devices that are controlled by DMX to be plugged into one controller, like a lighting console . DMX512 is a standard for digital communication networks that are commonly used to control stage lighting and effects. It was originally intended as a standardized method for controlling light dimmers, which, prior to DMX512, had employed various incompatible proprietary protocols . However, it soon became the primary method for linking controllers and dimmers, and also more advanced fixtures and special effects devices such as fog machines and moving lights, and has also expanded to uses in non-theatrical interior and architectural lighting; DMX512 has been used at scales ranging from strings of Christmas lights to electronic billboards.
Animation of a simplified stepper motor (unipolar) Frame 1: The top electromagnet (1) is turned on, attracting the nearest teeth of the gear-shaped iron rotor. With the teeth aligned to electromagnet 1, they will be slightly offset from electromagnet 2. Frame 2: The top electromagnet (1) is turned off, and the right electromagnet (2) is energized, pulling the teeth into alignment with it. This results in a rotation of 3.6° in this example. Frame 3: The bottom electromagnet (3) is energized; another 3.6° rotation occurs.
Stepper motor - Wikipedia, the free encyclopedia
DC Power
Ohm's Law
3 - Phase Power