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  2. File:Scheme of spontaneous parametric down-conversion.pdf

    en.wikipedia.org/wiki/File:Scheme_of_spontaneous...

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  3. Frequency changer - Wikipedia

    en.wikipedia.org/wiki/Frequency_changer

    A frequency changer or frequency converter is electronic or electromechanical equipment that converts alternating current of one frequency to alternating current of another frequency. The equipment may also change the voltage , but if it does, that is incidental to its principal purpose, since voltage conversion of alternating current is much ...

  4. Electrochemical energy conversion - Wikipedia

    en.wikipedia.org/wiki/Electrochemical_energy...

    Electrochemical energy conversion is a field of energy technology concerned with electrochemical methods of energy conversion including fuel cells and photoelectrochemical. [1] This field of technology also includes electrical storage devices like batteries and supercapacitors. It is increasingly important in context of automotive propulsion ...

  5. Arduino - Wikipedia

    en.wikipedia.org/wiki/Arduino

    Arduino (/ ɑː r ˈ d w iː n oʊ /) 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.

  6. Alkali-metal thermal to electric converter - Wikipedia

    en.wikipedia.org/wiki/Alkali-metal_thermal_to...

    The overall system could achieve as high as 14 W/kg with present collector technology and future AMTEC conversion efficiencies. [ citation needed ] The energy storage system has the potential to batteries, and the temperatures at which the system operates allows long life and reduced radiator size (heat-reject temperature of 600 K).

  7. Thermoelectric generator - Wikipedia

    en.wikipedia.org/wiki/Thermoelectric_generator

    The typical efficiency of TEGs is around 5–8%, although it can be higher. Older devices used bimetallic junctions and were bulky. More recent devices use highly doped semiconductors made from bismuth telluride (Bi 2 Te 3), lead telluride (PbTe), [10] calcium manganese oxide (Ca 2 Mn 3 O 8), [11] [12] or combinations thereof, [13] depending on application temperature.

  8. Magnetohydrodynamic generator - Wikipedia

    en.wikipedia.org/wiki/Magnetohydrodynamic_generator

    A magnetohydrodynamic generator (MHD generator) is a magnetohydrodynamic converter that transforms thermal energy and kinetic energy directly into electricity.An MHD generator, like a conventional generator, relies on moving a conductor through a magnetic field to generate electric current.

  9. Analog-to-digital converter - Wikipedia

    en.wikipedia.org/wiki/Analog-to-digital_converter

    4-channel stereo multiplexed analog-to-digital converter WM8775SEDS made by Wolfson Microelectronics placed on an X-Fi Fatal1ty Pro sound card AD570 8-bit successive-approximation analog-to-digital converter AD570/AD571 silicon die INTERSIL ICL7107. 3.5 digit (i.e. conversion from analog to a numeric range of 0 to 1999 vs. 3 digit range of 0 to 999, typically used in meters, counters, etc ...