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  2. Voltage controller - Wikipedia

    en.wikipedia.org/wiki/Voltage_controller

    A Voltage controller thyristor based dimmer rack An electrical schematic for a typical SCR-based light dimmer. A voltage controller, also called an AC voltage controller or AC regulator is an electronic module based on either thyristors, triodes for alternating current, silicon-controlled rectifiers or insulated-gate bipolar transistors, which converts a fixed voltage, fixed frequency ...

  3. 0-10 V lighting control - Wikipedia

    en.wikipedia.org/wiki/0-10_V_lighting_control

    References. 0-10 V lighting control. 0–10 V is one of the first and simplest electronic lighting control signaling systems, used as an early fluorescent dimming system. [ 1 ] Simply put, the control signal is a DC voltage that varies between zero and ten volts. Two standards are recognized: current sourcing and current sinking.

  4. Arduino - Wikipedia

    en.wikipedia.org/wiki/Arduino

    arduino.cc. Arduino (/ ɑːrˈdwiːnoʊ /) is an Italian open-source hardware and software company, project, and user community that designs and manufactures single-board microcontrollers and microcontroller kits for building digital devices. Its hardware products are licensed under a CC BY-SA license, while the software is licensed under the ...

  5. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room. In contrast to a simple light switch ...

  6. DMX512 - Wikipedia

    en.wikipedia.org/wiki/DMX512

    DMX512 is a bus network no more than 400 metres (1,300 ft) long, with not more than 32 unit loads (individual devices connected) on a single bus. If more than 32 unit loads need to communicate, the network can be expanded across parallel buses using DMX splitters. Network wiring consists of a shielded twisted pair, with a characteristic ...

  7. Distribution board - Wikipedia

    en.wikipedia.org/wiki/Distribution_board

    e. A distribution board (also known as panelboard, circuit breaker panel,breaker panel, electric panel, fuse box or DB box) is a component of an electricity supply system that divides an electrical power feed into subsidiary circuits while providing a protective fuse or circuit breaker for each circuit in a common enclosure.

  8. Free COVID-19 tests from federal government: When and ... - AOL

    www.aol.com/free-covid-19-tests-federal...

    To order the tests, visit COVIDtest.gov. Once ordered, the at-home tests will be shipped to homes for free. Each household can receive up to four free tests. The tests will be able to detect the ...

  9. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    Pulse-width modulation(PWM), also known as pulse-duration modulation(PDM) or pulse-length modulation(PLM),[1]is any method of representing a signal as a rectangular wavewith a varying duty cycle(and for some methods also a varying period). PWM is useful for controlling the average poweror amplitudedelivered by an electrical signal.