enow.com Web Search

  1. Ad

    related to: lighting contactor panel with photocell outlet replacement

Search results

  1. Results from the WOW.Com Content Network
  2. Multiway switching - Wikipedia

    en.wikipedia.org/wiki/Multiway_switching

    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 , which is a single pole, single throw (SPST) switch, multiway switching uses switches with one or more additional contacts and two or more wires are run ...

  3. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    In larger lighting systems, for example warehouses or outdoor lighting systems, the required current may be too high for a manual switch. In these systems light switches control lighting contactors, a relay that allows the manual light switch to operate on a lower current, with smaller wiring than would be required in the main lighting circuit.

  4. Twilight switch - Wikipedia

    en.wikipedia.org/wiki/Twilight_switch

    By means of a light intensity sensor ( photoresistor, photodiode, phototransistor, etc.) that detects the amount of light that illuminates an environment, it triggers an electrical circuit that opens or closes the contacts of a mechanical relay or of a solid state relay. (power transistor, thyristor, triac, etc.), which activates the lighting ...

  5. Photoresistor - Wikipedia

    en.wikipedia.org/wiki/Photoresistor

    Three photoresistors with scale in mm Large CdS photocell from a street light. A photoresistor is less light-sensitive than a photodiode or a phototransistor.The latter two components are true semiconductor devices, while a photoresistor is a passive component that does not have a PN-junction.

  6. Electrical contact - Wikipedia

    en.wikipedia.org/wiki/Electrical_contact

    An electromagnetic relay with a pair of contacts. An electrical contact is an electrical circuit component found in electrical switches, relays, connectors and circuit breakers. [1]

  7. Contactor - Wikipedia

    en.wikipedia.org/wiki/Contactor

    AC contactor for pump application. A contactor is an electrically controlled switch used for switching an electrical power circuit. [1] A contactor is typically controlled by a circuit which has a much lower power level than the switched circuit, such as a 24-volt coil electromagnet controlling a 230-volt motor switch.

  8. Lead prosecutor on Trump documents case leaves US Justice ...

    www.aol.com/news/lead-prosecutor-trump-documents...

    WASHINGTON (Reuters) -A lead prosecutor on the criminal case accusing Donald Trump of illegally holding onto classified documents has left the U.S. Justice Department ahead of the president-elect ...

  9. Lighting control system - Wikipedia

    en.wikipedia.org/wiki/Lighting_control_system

    A lighting control system is intelligent network-based lighting control that incorporates communication between various system inputs and outputs related to lighting control with the use of one or more central computing devices. Lighting control systems are widely used on both indoor and outdoor lighting of commercial, industrial, and ...

  1. Ad

    related to: lighting contactor panel with photocell outlet replacement