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    • Thermocouple

      Thermocouple

      A thermocouple is a temperature probe that uses two dissimilar metals join at two places. The voltage created when the metals are subjected to a temperature gradient is used to calculate the temperature. There are many different types of thermocouple, each designed for a specific temperature and sensitivity range. How Thermocouples Work The thermoelectric effect,

    • High Frequency Alternator

      High Frequency Alternator

      A high-frequency alternator is an electrical device used for radio communications. It yields high-frequency, periodically alternating current that can go as high as 100,000 Hz for the purpose of producing stable radio waves. The History of High-Frequency Alternators By the first decade of the 20th century, wireless telegraphy was already in place and was no

    • Voltage Drop

      Voltage Drop

      Voltage is the measurement for the electrical force between two points that drives the current. More specifically, voltage is the measure of the energy per unit charge that is equal to the electrical potential difference between two measured points. Volts are normally measured by a voltmeter. Voltage drop is the reduction in voltage in an

    • Rainfade

      Rainfade

      Rainfade refers to a phenomenon that occurs during strong rain or snowfall in which satellite signals are prevented from reaching their destination. Rainfade may also refer to extensive cloud cover, strong winds, or any other environmental effect that distorts a satellite broadcast, but is most often observed during rainfall. Rainfade may also refer to the

    • How XM Radio Works

      How XM Radio Works

      XM radio is one of the two primary satellite radio services in North America. The service is operated by Sirius XM Radio and publishes premium radio content in addition to more than 70 music channels, 39 news, ports, talk, and entertainment choices, 23 play-by-play sports channels, and 21 regional and weather channels. XM radio channels

    • Thermoelectric Generators

      Thermoelectric Generators

      A thermoelectric generator is a solid-state device that works similar to solar panels but converts heat, rather than sunlight, directly into electricity. A thermoelectric generator is usually made of bismuth telluride semiconductor junctions that are only several millimeters thick. This differs drastically from the bimetallic junctions that were previously used, which were much thicker. Thermoelectric

    • MCPC (Multiple Channel Per Carrier)

      MCPC (Multiple Channel Per Carrier)

      MCPC stands for Multiple Channel Per Carrier. MCPC is a form of satellite transmission where each carrier is utilized to transmit multiple channels. MCPC transmits multiple video or audio channels on one carrier by utilizing Time Division Multiplexing (TDM). The alternative to MCPC is SCPC (Single Channel Per Carrier). MCPC is used much more than

    • Chebyshev Filter

      Chebyshev Filter

      A Chebyshev filter can either be analog or digital, and is an improvement on the Butterworth filter as it has a steeper roll-off and a greater passband and stopband ripple. These filters minimize overall error between actual and idealized filter characteristics for the designed range of the filter. The filter was named after Pafnuty Chebyshev,

    • What is a CMOS Inverter?

      What is a CMOS Inverter?

      A CMOS (Complementary Metal-oxide Semiconductor) inverter is a device that produces logic functions and is the primary component of all integrated circuits. A CMOS inverter is a field-effect transistor that is composed of a metal gate that lies on top of an insulating layer of oxygen, which lies on top of a semiconductor. CMOS inverters

    • What is a Loop Antenna?

      What is a Loop Antenna?

      A loop antenna is one that is designed to receive radio signals more efficiently than other antennas. Loop antennas are considered more efficient than others because they are mobile, work with a wide range of frequencies, and use less electricity. A loop antenna’s performance is entirely dependent on its construction and placement, although other factors

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