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    • Spark-Gap Transmitter

      Spark-Gap Transmitter

      A spark-gap transmitter is a mechanism for producing radio signals. It has been the primary radio transmission device during the early years of radio technology. It was soon superseded by other transmitters due to its discontinuous radio wave production and widely varying frequencies. How a Spark-Grap Transmitter Works A spark gap transmitter is basically composed

    • How Sunspots Affect Radio Reception

      How Sunspots Affect Radio Reception

      In order to understand how sunspots effect radio reception, you need to understand that the light waves and radio waves that the sun emits are both categorized as electromagnetic (EM) radiation. While light waves are visible to the human eye, they are still electromagnetic waves that oscillate. There are many electro magnetic waves, some oscillate

    • Linear Amplifier

      Linear Amplifier

      Linear amplifiers are electronic circuits that have an output that is proportional to the input of the device while providing additional power to the load. A linear amplifier is normally a variant of a radio-frequency (RF) power amplifier and is used frequently in amateur radio and in laboratory and commercial audio equipment with an output

    • IR Blaster

      IR Blaster

      An IR blaster (infrared blaster) is a device that emulates an infrared remote control. IR blasters are used in situations where one device controls another. For example, it can be connected to a computer in order to control virtually every other infrared device in the room from that computer. IR blasters are usually small and

    • Alternator

      Alternator

      An alternator turns mechanical energy into electrical energy, in the form of alternating current. It is a type of generator, most commonly used by automobiles to power their electrical systems. They are usually mounted on the side of the internal combustion engine. How Alternators Work An alternator consists of a rotor, stator, rectifier, housing, and

    • 8PSK

      8PSK

      8PSK (8 Phase Shift Keying) is a phase modulation algorithm. Phase modulation is a version of frequency modulation where the phase of the carrier wave is modulated to encode bits of digital information in each phase change. The “PSK” in 8PSK refers to the use of Phased Shift Keying. Phased Shift Keying is a form

    • Backward Error Correction (BEC)

      Backward Error Correction (BEC)

      Backward Error Correction, also known as an “Automatic Repeat Request” is an error correction technique in which a receiving device sends a request to the source device to re-send information. Backward Error Correction is used in situations where some of the transmitted data has been lost or corrupted during transit and the transmitting device must

    • Linear LNB

      Linear LNB

      LNB stands for low noise blocker and it is essentially an amplifier on the end of your small satellite TV dish or communications dish. The “Linear” portion of Linear LNB stands for the characteristics of the radio waves that are transmitted via the satellite in space to your dish (LNB). Two Types of Polarization Circular

    • Symbol Rate

      Symbol Rate

      The symbol rate is the rate of state changes on a communications circuit. If a circuit can carry two tones per second, the circuit has a symbol rate of two. Circuits then use different modulation techniques to carry multiple bits per symbol. If the circuit is limited to two different tones, the first tone can

    • What is a Capacitor Bank?

      What is a Capacitor Bank?

      A Capacitor Bank is a group of several capacitors of the same rating that are connected in series or parallel with each other to store electrical energy . The resulting bank is then used to counteract or correct a power factor lag or phase shift in an alternating current (AC) power supply. They can also be

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