enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Flash comparison - Wikipedia

    en.wikipedia.org/wiki/Flash_comparison

    43m/141 ft at 105mm zoom-head position No ... Vivitar 285HV clone Canon Speedlite 580ex [38] ... Auto Thyristor. Vivitar 550FD 4.5m at ISO100 [46]

  3. Vivitar - Wikipedia

    en.wikipedia.org/wiki/Vivitar

    Vivitar Corporation is a manufacturer, distributor, and marketer of photographic and optical equipment originally based in Santa Monica, California. [ citation needed ] Since 2008, the Vivitar name serves as Sakar International's house brand for digital imaging, optics, mobile accessories, and audio products.

  4. Static VAR compensator - Wikipedia

    en.wikipedia.org/wiki/Static_VAR_compensator

    By connecting the thyristor-controlled reactor, which is continuously variable, along with a capacitor bank step, the net result is continuously variable leading or lagging power. In industrial applications, SVCs are typically placed near high and rapidly varying loads, such as arc furnaces , where they can smooth flicker voltage .

  5. Guide number - Wikipedia

    en.wikipedia.org/wiki/Guide_number

    Cameras with focal-plane shutters—even if they had PC connectors with X, F, M, or S-sync delays ("xenon sync" with zero delay and flashbulbs with peak delays of 5, 20, and 30 ms)—could not be used at speeds that attenuated guide numbers with most types of flashbulbs because their light curves were characterized by rapid rise and fall rates; the second shutter curtain would begin wiping ...

  6. Thyristor-switched capacitor - Wikipedia

    en.wikipedia.org/wiki/Thyristor-switched_capacitor

    A thyristor-switched capacitor (TSC) is a type of equipment used for compensating reactive power in electrical power systems. It consists of a power capacitor connected in series with a bidirectional thyristor valve and, usually, a current limiting reactor ( inductor ).

  7. Thyristor - Wikipedia

    en.wikipedia.org/wiki/Thyristor

    A thyristor (/ θ aɪ ˈ r ɪ s t ər /, from a combination of Greek language θύρα, meaning "door" or "valve", and transistor [1]) is a solid-state semiconductor device which can be thought of as being a highly robust and switchable diode, allowing the passage of current in one direction but not the other, often under control of a gate electrode, that is used in high power applications ...

  8. Thyristor power controller - Wikipedia

    en.wikipedia.org/wiki/Thyristor_power_controller

    The thyristor power controller switches 60% of the solid waves to the load while blocking 40%. The operating mode is to be regarded as unproblematic. Only in the case of a too weakly designed network, it is possible for illuminating installations which are connected to the same network to have undesired luminance fluctuations (flicker effect).

  9. HVDC converter station - Wikipedia

    en.wikipedia.org/wiki/HVDC_converter_station

    The thyristor valves are usually grouped in pairs or groups of four and can stand on insulators on the floor or hang from insulators from the ceiling. Line commutated converters require voltage from the AC network for commutation, but since the late 1990s, voltage sourced converters have started to be used for HVDC.