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List of electronics topics | A Wisdom Archive on List of electronics topics | | List of electronics topics A selection of articles related to List of electronics topics | |
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List of electronics topics
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ARTICLES RELATED TO List of electronics topics | | | |  List of electronics topics: Encyclopedia II - List of electronics topics - MMagnet - Magnetic core memory - Magnetic field - Magnetic flux - Magnetic flux quantum - Magnetic levitation - Magnetism - Magnetosphere - Magneto-optic effect - Magnetron - Main distribution frame - Main lobe - Manchester code - Maser - Mask work - Master frequency generator - Maximum power - Maximal-ratio combiner - Maximum usable frequency - Maxwell coil - Maxwell's equations - Maxwell's demon - Mean time between outages - Mediation function - Medium - Medium frequency (MF) - Medium-power talker - Mediumwave - Michelson-Morley experiment ...
See also:List of electronics topics, List of electronics topics - 0–9, List of electronics topics - A, List of electronics topics - B, List of electronics topics - C, List of electronics topics - D, List of electronics topics - E, List of electronics topics - F, List of electronics topics - G, List of electronics topics - H, List of electronics topics - I, List of electronics topics - J, List of electronics topics - K, List of electronics topics - L, List of electronics topics - M, List of electronics topics - N, List of electronics topics - O, List of electronics topics - P, List of electronics topics - Q, List of electronics topics - R, List of electronics topics - S, List of electronics topics - T, List of electronics topics - U, List of electronics topics - V, List of electronics topics - W, List of electronics topics - X, List of electronics topics - Y, List of electronics topics - Z Read more here: » List of electronics topics: Encyclopedia II - List of electronics topics - M |
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| | | | List of electronics topics: Encyclopedia II - Transformer - Construction A transformer usually has:
two or more insulated windings, to carry current
a core, in which the mutual magnetic field couples the windings.
In transformers designed to operate at low frequencies, the windings are usually formed around an iron or steel core. This helps to confine the magnetic field within the transformer and increase its efficiency, although the presence of the core causes energy losses. Transformers made to operate at high frequencies may use other l ...
See also:Transformer, Transformer - Introduction, Transformer - Basic principles, Transformer - Flux coupling, Transformer - Electrical laws, Transformer - Invention, Transformer - Practical considerations, Transformer - Classification, Transformer - Losses, Transformer - High frequency operation, Transformer - Construction, Transformer - Cores, Transformer - Windings, Transformer - Insulation, Transformer - Shielding, Transformer - Coolant, Transformer - Terminals, Transformer - Transformer designs, Transformer - Autotransformers, Transformer - Polyphase transformers, Transformer - Resonant transformers, Transformer - Instrument transformers, Transformer - Pulse transformers, Transformer - RF transformers, Transformer - Uses of transformers Read more here: » Transformer: Encyclopedia II - Transformer - Construction |
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| | | | List of electronics topics: Encyclopedia II - Pickup music - Magnetic pickups Electromagnetic pickups use the principle of variable magnetic reluctance. The pickup consists of a permanent magnet wrapped with many turns of fine brass wire. The pickup is mounted on the body of the instrument, close to the strings. When the instrument's strings vibrate in the magnetic field of the permanent magnet, the fluxes alternate with the same freqeuncy of the strings. The windings sense the change of magnetic field. An alternating voltage is induced to counteract the changes of magnetic field. This signal, with the same frequencies of the string, is then fed to an instrument ...
See also:Pickup music, Pickup music - Magnetic pickups, Pickup music - Output, Pickup music - Pickup sound, Pickup music - Humbucking, Pickup music - Hexaphonic pickups, Pickup music - Construction sizes spacing, Pickup music - Notation, Pickup music - Piezoelectric pickups, Pickup music - Optical pickups, Pickup music - Active and passive pick-ups, Pickup music - Electronic-related, Pickup music - Pickup types and models Read more here: » Pickup music: Encyclopedia II - Pickup music - Magnetic pickups |
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| | | | List of electronics topics: Encyclopedia II - Spark gap - Spark gaps as protective devices Spark gaps are frequently used to prevent voltage surges from damaging equipment.
Spark gaps are used in high-voltage switches, for example, in power plants and electrical substations. Such switches are constructed with a large, remote-operated switching blade with a hinge as one contact and two leaf springs holding the other end as second contact. If the blade is opened, a spark may keep the connection between blade and spring conducting. (The spark ionizes the air, which becomes conductive, allowing an arc to form, which sustains io ...
See also:Spark gap, Spark gap - Spark gaps as ignition devices, Spark gap - Spark gaps as radio transmitters, Spark gap - Spark gaps as protective devices, Spark gap - Spark gaps as power-switching devices, Spark gap - Spark gaps as entertainment, Spark gap - Spark gaps in nature Read more here: » Spark gap: Encyclopedia II - Spark gap - Spark gaps as protective devices |
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| | | | List of electronics topics: Encyclopedia II - RC circuit - Series circuit By viewing the circuit as a voltage divider, we see that the voltage across the capacitor is:
and the voltage across the resistor is:
.
RC circuit - Transfer functions.
The transfer function for the capacitor is
Similarly, the transfer function for the resistor is
Both transfer functions have a single pole located at
In addition, the transfer function for the resistor has a zero located at the origin.
...
See also:RC circuit, RC circuit - Introduction, RC circuit - Complex impedance, RC circuit - Sinusoidal steady state, RC circuit - Series circuit, RC circuit - Transfer functions, RC circuit - Gain and phase angle, RC circuit - Current, RC circuit - Impulse response, RC circuit - Frequency domain considerations, RC circuit - Time domain considerations, RC circuit - Parallel circuit Read more here: » RC circuit: Encyclopedia II - RC circuit - Series circuit |
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| | | | List of electronics topics: Encyclopedia II - Transformer - Construction
Transformer - Cores.
Transformers for use at power or audio frequencies have cores made of many thin laminations of silicon steel. By concentrating the magnetic flux, more of it is usefully linked by both primary and secondary windings. Since the steel core is conductive, it, too, has currents induced in it by the changing magnetic flux. Each layer is insulated from the adjacent layer to reduce the energy lost to eddy current heating of the core. A typical laminated core is made from E-shaped and I-shaped p ...
See also:Transformer, Transformer - Introduction, Transformer - Basic principles, Transformer - An analogy, Transformer - Flux coupling laws, Transformer - Invention, Transformer - Practical considerations, Transformer - Classifications, Transformer - Losses, Transformer - High frequency operation, Transformer - Construction, Transformer - Cores, Transformer - Windings, Transformer - Insulation, Transformer - Shielding, Transformer - Coolant, Transformer - Terminals, Transformer - Enclosure, Transformer - Transformer designs, Transformer - Autotransformers, Transformer - Polyphase transformers, Transformer - Resonant transformers, Transformer - Instrument transformers, Transformer - Pulse transformers, Transformer - RF transformers, Transformer - Audio transformers, Transformer - Uses of transformers Read more here: » Transformer: Encyclopedia II - Transformer - Construction |
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| | | | List of electronics topics: Encyclopedia II - Lip sync - Lip synching songs Professional artists usually lip sync while recording music videos. The technique of recording video clips consists of recording a film to pre-recorded music, so artists have to lip-sync to their songs (and often imitate playing musical instruments as well). Regarding new techniques in recording music videos, artists sometimes move their lips to music playing at different speed, or even backwards, to make unusual effects in the final clip.
It is also common for singers to lip sync on live television, especially when making short guest ...
See also:Lip sync, Lip sync - Lip synching songs, Lip sync - Lip synching films, Lip sync - Lip synching video games, Lip sync - Transmission synchronization, Lip sync - Lip synching in the headlines, Lip sync - Singers that have been caught lip-synching Read more here: » Lip sync: Encyclopedia II - Lip sync - Lip synching songs |
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| | | | List of electronics topics: Encyclopedia II - Pickup music - Magnetic pickups Electromagnetic pickups use the principle of variable magnetic reluctance. The pickup consists of a permanent magnet wrapped with many turns of fine copper wire. The pickup is mounted on the body of the instrument, close to the strings. When the instrument's strings vibrate in the magnetic field of the permanent magnet, they alter the reluctance of the magnetic path seen by the magnet. This changes the flux in the magnetic circuit which in turn induces an alternating voltage in the winding. The signal created is then carried to amplification or recording equipment via a cable (or by radio transmission). See also:Pickup music, Pickup music - Magnetic pickups, Pickup music - Output, Pickup music - Pickup sound, Pickup music - Humbucking, Pickup music - Hexaphonic pickups, Pickup music - Construction sizes spacing, Pickup music - Notation, Pickup music - Piezoelectric pickups, Pickup music - Optical pickups, Pickup music - Early pick-up devices using the piezoelectric effect, Pickup music - Active and passive pick-ups, Pickup music - Electronic-related, Pickup music - Pickup types and models Read more here: » Pickup music: Encyclopedia II - Pickup music - Magnetic pickups |
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| | | | List of electronics topics: Encyclopedia II - RL circuit - Series circuit By viewing the circuit as a voltage divider, we see that the voltage across the inductor is:
and the voltage across the resistor is:
.
RL circuit - Transfer functions.
The transfer function for the inductor is
Similarly, the transfer function for the resistor is
Both transfer functions have a single pole located at
In addition, the transfer function for the inductor has a zero located at the origin.
...
See also:RL circuit, RL circuit - Introduction, RL circuit - Complex Impedance, RL circuit - Eigenfunctions, RL circuit - Sinusoidal Steady State, RL circuit - Series circuit, RL circuit - Transfer functions, RL circuit - Gain and phase angle, RL circuit - Phasor notation, RL circuit - Current, RL circuit - Impulse Response, RL circuit - Zero input response ZIR, RL circuit - Frequency domain considerations, RL circuit - Time domain considerations, RL circuit - Parallel circuit Read more here: » RL circuit: Encyclopedia II - RL circuit - Series circuit |
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| | | | List of electronics topics: Encyclopedia II - Ionosphere - Geophysics The lowest part of the Earth's atmosphere is called the troposphere and it extends from the surface up to about 10 km (6 miles). The atmosphere above 10 km is called the stratosphere, followed by the mesosphere. It is in the stratosphere that incoming solar radiation creates the ozone layer. At heights of above 80 km (50 miles), in the thermosphere, the atmosphere is so thin that free electrons can exist for short periods of time before they are captured by a nearby positive ion. The number of these free electrons is sufficient to affect rad ...
See also:Ionosphere, Ionosphere - Geophysics, Ionosphere - The Ionospheric Layers, Ionosphere - D Layer, Ionosphere - E Layer, Ionosphere - ES, Ionosphere - F Layer, Ionosphere - Anomalies to the Ideal Model, Ionosphere - Winter Anomaly, Ionosphere - Equatorial Anomaly, Ionosphere - Ionospheric Perturbations, Ionosphere - X-rays: Sudden Ionospheric Disturbances SID, Ionosphere - Protons: Polar Cap Absorption PCA, Ionosphere - Geomagnetic Storms, Ionosphere - Radio Application, Ionosphere - Other Applications, Ionosphere - Measurements, Ionosphere - Ionograms, Ionosphere - Solar Flux, Ionosphere - Scientific research on Ionspheric propagation, Ionosphere - History Read more here: » Ionosphere: Encyclopedia II - Ionosphere - Geophysics |
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| | | | List of electronics topics: Encyclopedia II - Electronics - Electronic devices today Electronic devices are used to perform a wide variety of tasks. The main uses of electronic circuits are the controlling, processing and distribution of information, and the conversion and distribution of electric power. Both of these uses involve the creation or detection of electromagnetic fields and electric currents. While electrical energy had been used for some time to transmit data over telegraphs and telephones, the development of electronics truly began in earnest with the advent of radio.
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See also:Electronics, Electronics - Electronic devices today, Electronics - CAD/CAM of electronic circuits, Electronics - Electronic systems, Electronics - Electronic test equipment, Electronics - Electronic components, Electronics - Analog circuits, Electronics - Digital circuits, Electronics - Mixed-signal circuits, Electronics - Heat dissipation, Electronics - Noise, Electronics - Electronics theory Read more here: » Electronics: Encyclopedia II - Electronics - Electronic devices today |
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| | | | List of electronics topics: Encyclopedia II - Digital circuit - Construction A digital circuit is often constructed from small electronic circuits called logic gates. Each logic gate represents a function of boolean logic. A logic gate is an arrangement of electrically controlled switches. The output is an electrical flow or voltage, that can, in turn, control more logic gates. Logic gates often use the fewest number of transistors in order to reduce their size, power consumption and cost, and increase their reliability. Manufactured as integrated circuits, they are the least expensive implementation when made in large volumes. They are usually designed by engineers using electronic design autom ...
See also:Digital circuit, Digital circuit - Properties of Digital Circuits, Digital circuit - Levels, Digital circuit - Construction, Digital circuit - Structure of digital systems, Digital circuit - Automated design tools, Digital circuit - Design for Testability, Digital circuit - Trade offs, Digital circuit - Nonelectronic logic, Digital circuit - Recent developments Read more here: » Digital circuit: Encyclopedia II - Digital circuit - Construction |
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| | | | List of electronics topics: Encyclopedia II - Transformer - Practical considerations
Transformer - Classifications.
Transformers are adapted to numerous engineering applications and may be classified in many ways:
By power level (from fraction of a watt to many megawatts),
By application (power supply, impedance matching, circuit isolation),
By frequency range (power, audio, RF)
By voltage class (a few volts to about 750 kilovolts)
By cooling type (air cooled, oil filled, fan cooled, water cooled, etc.)
By purpose (rectifier, arc furnace, ...
See also:Transformer, Transformer - Introduction, Transformer - Basic principles, Transformer - An analogy, Transformer - Flux coupling laws, Transformer - Invention, Transformer - Practical considerations, Transformer - Classifications, Transformer - Losses, Transformer - High frequency operation, Transformer - Construction, Transformer - Cores, Transformer - Windings, Transformer - Insulation, Transformer - Shielding, Transformer - Coolant, Transformer - Terminals, Transformer - Enclosure, Transformer - Transformer designs, Transformer - Autotransformers, Transformer - Polyphase transformers, Transformer - Resonant transformers, Transformer - Instrument transformers, Transformer - Pulse transformers, Transformer - RF transformers, Transformer - Audio transformers, Transformer - Uses of transformers Read more here: » Transformer: Encyclopedia II - Transformer - Practical considerations |
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| | | | List of electronics topics: Encyclopedia II - Digital circuit - Properties of Digital Circuits Digital circuits are distinct from analog circuits. In analog circuits, quantities are represented by continuously varying voltages, currents, or frequencies.
The usual advantages of digital circuits when compared to analog circuits are:
Digital signals can be regenerated to achieve lossless data transmission.
Digital systems interface well with computers and are easy to control with software.
Digital circuits are less affected by noise. In fact, if the noise is below a certain level (the noise margin), ...
See also:Digital circuit, Digital circuit - Properties of Digital Circuits, Digital circuit - Levels, Digital circuit - Construction, Digital circuit - Structure of digital systems, Digital circuit - Automated design tools, Digital circuit - Design for Testability, Digital circuit - Trade offs, Digital circuit - Nonelectronic logic, Digital circuit - Recent developments Read more here: » Digital circuit: Encyclopedia II - Digital circuit - Properties of Digital Circuits |
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| | | | List of electronics topics: Encyclopedia II - Transformer - Transformer designs
Transformer - Autotransformers.
Main article: Autotransformer
An autotransformer has only a single winding, which is tapped at some point along the winding. AC or pulsed voltage is applied across a portion of the winding, and a higher (or lower) voltage is produced across another portion of the same winding. For voltage ratios not exceeding about 3:1, an autotransformer is less costly, lighter, smaller and more efficient ...
See also:Transformer, Transformer - Introduction, Transformer - Basic principles, Transformer - An analogy, Transformer - Flux coupling laws, Transformer - Invention, Transformer - Practical considerations, Transformer - Classifications, Transformer - Losses, Transformer - High frequency operation, Transformer - Construction, Transformer - Cores, Transformer - Windings, Transformer - Insulation, Transformer - Shielding, Transformer - Coolant, Transformer - Terminals, Transformer - Enclosure, Transformer - Transformer designs, Transformer - Autotransformers, Transformer - Polyphase transformers, Transformer - Resonant transformers, Transformer - Instrument transformers, Transformer - Pulse transformers, Transformer - RF transformers, Transformer - Audio transformers, Transformer - Uses of transformers Read more here: » Transformer: Encyclopedia II - Transformer - Transformer designs |
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| | | | List of electronics topics: Encyclopedia II - Pickup music - Optical pickups Optical pickups are a fairly recent development that work by sensing the interruption of a light beam by the string. The light source is usually an LED, and the detector is a photodiode or phototransistor. These pickups have complete insensitivity to magnetic or electric interference and also have a very wide and flat frequency response unlike magnetic pickups.
Optical pickup guitars were first sh ...
See also:Pickup music, Pickup music - Magnetic pickups, Pickup music - Output, Pickup music - Pickup sound, Pickup music - Humbucking, Pickup music - Hexaphonic pickups, Pickup music - Construction sizes spacing, Pickup music - Notation, Pickup music - Piezoelectric pickups, Pickup music - Optical pickups, Pickup music - Active and passive pick-ups, Pickup music - Electronic-related, Pickup music - Pickup types and models Read more here: » Pickup music: Encyclopedia II - Pickup music - Optical pickups |
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